subject:(thermoelectric effect)

Cranfield University

1. Achour, Abdenour. In-situ tuning of catalytic activity by thermoelectric effect.

Degree: 2017, Cranfield University

URL: http://dspace.lib.cranfield.ac.uk/handle/1826/14330

► For the first time, a new type of reactor which can combine thermoelectric energy harvesting and electrochemical promotion of catalysis was developed. A novel use… (more)

▼ For the first time, a new type of reactor which can combine thermoelectric energy harvesting and electrochemical promotion of catalysis was developed. A novel use of thermoelectric material as a catalyst support and promoter was investigated. A facile, cost-effective and scalable synthesis of thermoelectric material BiCuSeO has been developed. It was discovered that the catalytic activity of Pt supported on the thermoelectric material BiCuSeO, through the ethylene oxidation, can be increased by several tens to several hundreds of times by a thermoelectric voltage. We call this Thermoelectric Promotion of Catalysis (TEPOC). The catalytic activity under fuel-lean and fuel-rich conditions was also investigated for ethylene oxidation. It is believed that oxygen was more strongly and C₂H₄ was weakly adsorbed on the catalyst Pt surface under lean-fuel conditions (O₂/C₂H₄ > 1). However, under rich-fuel conditions (C₂H₄/O₂> 1.4), C₂H₄ became strongly adsorbed (probably chemisorbed) to the surface especially at a high Seebeck voltage, this blocked the catalyst surface, reduced the catalytic active site, hence the rate became smaller. To further investigate the TEPOC effect, the CO₂ hydrogenation over the same catalysts supported on the thermoelectric BiCuSeO was also studied and the results confirmed similar significant promotional effect. It also was found that a negative thermoelectric voltage shifted chemical equilibrium towards the reverse water gas shift (RWGS) reaction and CO selectivity. As a results, the CO₂ hydrogenation conversion reached 48.4% (CO₂:H₂ = 1:4) with 100% CO selectivity for Pt(80)/BCSO at 656 K, which was above the thermodynamic equilibrium conversion (TEC) under no Seebeck voltage without methanation. It was established a linear relationship between Ln(r) and –eV/kьT, where –eV/kьT is the ratio between the extra electrochemical energy induced by thermoelectric effect and the thermal energy of an electron. From this it was derived that the promotional effect was attributed to the change of work function of the catalyst surface, accompanied by charge transfer from the bulk to the surface due to the thermoelectric effect. ii The discovery of TEPOC prompts that many catalytic chemical reactions can be tuned in-situ and independently from the change of conditions within the reaction chamber, to achieve much higher reaction rate, or at lower temperature, or have better desired selectivity through changing the backside temperature of the thermoelectric catalyst support.

Subjects/Keywords: Heterogeneous catalysis; catalyst promoters; BiCuSeO; thermoelectric effect; thermoelectric promotion of catalysis

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Achour, A. (2017). In-situ tuning of catalytic activity by thermoelectric effect. (Thesis). Cranfield University. Retrieved from http://dspace.lib.cranfield.ac.uk/handle/1826/14330

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Achour, Abdenour. “In-situ tuning of catalytic activity by thermoelectric effect.” 2017. Thesis, Cranfield University. Accessed April 18, 2021. http://dspace.lib.cranfield.ac.uk/handle/1826/14330.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Achour, Abdenour. “In-situ tuning of catalytic activity by thermoelectric effect.” 2017. Web. 18 Apr 2021.

Vancouver:

Achour A. In-situ tuning of catalytic activity by thermoelectric effect. [Internet] [Thesis]. Cranfield University; 2017. [cited 2021 Apr 18]. Available from: http://dspace.lib.cranfield.ac.uk/handle/1826/14330.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Achour A. In-situ tuning of catalytic activity by thermoelectric effect. [Thesis]. Cranfield University; 2017. Available from: http://dspace.lib.cranfield.ac.uk/handle/1826/14330

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Cranfield University

2. Achour, Abdenour. In-situ tuning of catalytic activity by thermoelectric effect.

Degree: PhD, 2017, Cranfield University

URL: http://dspace.lib.cranfield.ac.uk/handle/1826/14330 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.783264

► For the first time, a new type of reactor which can combine thermoelectric energy harvesting and electrochemical promotion of catalysis was developed. A novel use… (more)

▼ For the first time, a new type of reactor which can combine thermoelectric energy harvesting and electrochemical promotion of catalysis was developed. A novel use of thermoelectric material as a catalyst support and promoter was investigated. A facile, cost-effective and scalable synthesis of thermoelectric material BiCuSeO has been developed. It was discovered that the catalytic activity of Pt supported on the thermoelectric material BiCuSeO, through the ethylene oxidation, can be increased by several tens to several hundreds of times by a thermoelectric voltage. We call this Thermoelectric Promotion of Catalysis (TEPOC). The catalytic activity under fuel-lean and fuel-rich conditions was also investigated for ethylene oxidation. It is believed that oxygen was more strongly and C₂H₄ was weakly adsorbed on the catalyst Pt surface under lean-fuel conditions (O₂/C₂H₄ > 1). However, under rich-fuel conditions (C₂H₄/O₂> 1.4), C₂H₄ became strongly adsorbed (probably chemisorbed) to the surface especially at a high Seebeck voltage, this blocked the catalyst surface, reduced the catalytic active site, hence the rate became smaller. To further investigate the TEPOC effect, the CO₂ hydrogenation over the same catalysts supported on the thermoelectric BiCuSeO was also studied and the results confirmed similar significant promotional effect. It also was found that a negative thermoelectric voltage shifted chemical equilibrium towards the reverse water gas shift (RWGS) reaction and CO selectivity. As a results, the CO₂ hydrogenation conversion reached 48.4% (CO₂:H₂ = 1:4) with 100% CO selectivity for Pt(80)/BCSO at 656 K, which was above the thermodynamic equilibrium conversion (TEC) under no Seebeck voltage without methanation. It was established a linear relationship between Ln(r) and -eV/kьT, where -eV/kьT is the ratio between the extra electrochemical energy induced by thermoelectric effect and the thermal energy of an electron. From this it was derived that the promotional effect was attributed to the change of work function of the catalyst surface, accompanied by charge transfer from the bulk to the surface due to the thermoelectric effect. ii The discovery of TEPOC prompts that many catalytic chemical reactions can be tuned in-situ and independently from the change of conditions within the reaction chamber, to achieve much higher reaction rate, or at lower temperature, or have better desired selectivity through changing the backside temperature of the thermoelectric catalyst support.

Subjects/Keywords: Heterogeneous catalysis; catalyst promoters; BiCuSeO; thermoelectric effect; thermoelectric promotion of catalysis

Record Details Similar Records Cite « Share

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Achour, A. (2017). In-situ tuning of catalytic activity by thermoelectric effect. (Doctoral Dissertation). Cranfield University. Retrieved from http://dspace.lib.cranfield.ac.uk/handle/1826/14330 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.783264

Chicago Manual of Style (16^th Edition):

Achour, Abdenour. “In-situ tuning of catalytic activity by thermoelectric effect.” 2017. Doctoral Dissertation, Cranfield University. Accessed April 18, 2021. http://dspace.lib.cranfield.ac.uk/handle/1826/14330 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.783264.

MLA Handbook (7^th Edition):

Achour, Abdenour. “In-situ tuning of catalytic activity by thermoelectric effect.” 2017. Web. 18 Apr 2021.

Vancouver:

Achour A. In-situ tuning of catalytic activity by thermoelectric effect. [Internet] [Doctoral dissertation]. Cranfield University; 2017. [cited 2021 Apr 18]. Available from: http://dspace.lib.cranfield.ac.uk/handle/1826/14330 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.783264.

Council of Science Editors:

Achour A. In-situ tuning of catalytic activity by thermoelectric effect. [Doctoral Dissertation]. Cranfield University; 2017. Available from: http://dspace.lib.cranfield.ac.uk/handle/1826/14330 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.783264

3. Maestrelli, Everlise. Desenvolvimento de um sistema de condicionamento de ar em escala reduzida utilizando módulos termoelétricos.

Degree: 2015, Brazil

URL: http://hdl.handle.net/10183/130107

►

Este trabalho apresenta o desenvolvimento do protótipo em escala reduzida de um sistema de refrigeração de ambientes baseado no efeito Peltier, para aplicação análoga aos… (more)

▼

Este trabalho apresenta o desenvolvimento do protótipo em escala reduzida de um sistema de refrigeração de ambientes baseado no efeito Peltier, para aplicação análoga aos condicionadores de ar comercializados atualmente, utilizando módulos termoelétricos. A pesquisa é motivada pela possibilidade de concepção de um equipamento de refrigeração para obtenção de conforto térmico, sem algumas desvantagens dos condicionadores de ar comerciais como por exemplo a vibração, ruído além das grandes dimensões como na atualidade pode ser visto. Através da pesquisa exploratório busca-se detalhar o fenômeno térmico conhecido como efeito Peltier, suas características, materiais além da revisão do estado da arte afim de encontrar estudos correlatos a proposta apresentada. Apresentam-se as etapas e detalha-se o desenvolvimento do protótipo compreendendo a parte mecânica, elétrica e térmica. Em um segundo momento, o protótipo desenvolvido é submetido a testes de validação que demonstram a real funcionalidade conforme previsto, porém, com baixo rendimento em comparação aos equipamentos existentes de refrigeração. Realiza-se ainda, uma análise comparativa por extrapolação entre o protótipo desenvolvido e condicionadores de ar comercializados permitindo a avaliação de possibilidade e implementação em escala real de aplicação. Conclui-se sugerindo melhorias e novos estudos para otimização e ajustes nas dinâmicas térmicas podem obter um produto tecnicamente viável e comercialmente apropriado.

This work describes the development of a prototype for a cooling system for environments with base on the Peltier effect, for application analogous to air conditioners currently marketed, using thermoelectric modules. The search is motivated by the possibility of conception of a cooling device to obtain a thermal comfort without some disadvantages of commercial air conditioners such as vibration, noise beyond large as can be seen today. Through exploratory research seeks to detail the thermal phenomenon known as the Peltier effect, their characteristics, materials beyond the state of the art review in order to find related studies the proposal. Presents the steps and prototype development details related the mechanics part, electrical and thermal. In a second moment, the prototype is submitted to validation tests that demonstrate the functioning as planned however, with low performance compared with commercial refrigeration equipment. It presents also a comparative analysis through extrapolation between the prototype and air conditioners commercialized allowing the evaluation of possibility and implementation in full-scale application. It concluded that the proposed improvements and new studies for optimization and adjustments in the thermal dynamics can obtain a product technically viable and commercially appropriate.

Advisors/Committee Members: Schaeffer, Lirio.

Subjects/Keywords: Termoeletricidade; Refrigeração; Conforto térmico; Peltier effect; Thermoelectric cooling; Thermoelectric modules

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Maestrelli, E. (2015). Desenvolvimento de um sistema de condicionamento de ar em escala reduzida utilizando módulos termoelétricos. (Masters Thesis). Brazil. Retrieved from http://hdl.handle.net/10183/130107

Chicago Manual of Style (16^th Edition):

Maestrelli, Everlise. “Desenvolvimento de um sistema de condicionamento de ar em escala reduzida utilizando módulos termoelétricos.” 2015. Masters Thesis, Brazil. Accessed April 18, 2021. http://hdl.handle.net/10183/130107.

MLA Handbook (7^th Edition):

Maestrelli, Everlise. “Desenvolvimento de um sistema de condicionamento de ar em escala reduzida utilizando módulos termoelétricos.” 2015. Web. 18 Apr 2021.

Vancouver:

Maestrelli E. Desenvolvimento de um sistema de condicionamento de ar em escala reduzida utilizando módulos termoelétricos. [Internet] [Masters thesis]. Brazil; 2015. [cited 2021 Apr 18]. Available from: http://hdl.handle.net/10183/130107.

Council of Science Editors:

Maestrelli E. Desenvolvimento de um sistema de condicionamento de ar em escala reduzida utilizando módulos termoelétricos. [Masters Thesis]. Brazil; 2015. Available from: http://hdl.handle.net/10183/130107

Brno University of Technology

4. Murgaš, Martin. Konstrukce termoelektrického chladícího zařízení: Thermoelectric cooler construction.

Degree: 2018, Brno University of Technology

URL: http://hdl.handle.net/11012/41601

► Bachelor thesis will concern description of Peltier modules and detailed description of thermoelectric phenomena’s on which is principle of these modules based on. Thermoelectric materials… (more)

Subjects/Keywords: Peltierov jav; Seebeckov jav; termoelektrické javy; termoelektrické moduly; peltierov článok; termoelektrické chladenie; napájanie; regulácia; Peltier Effect; Seebeck Effect; Thermoelectric Phenomena; Thermoelectric Modules; Peltier Modules; Thermoelectric Cooling; Power Supply; Regulation

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Murgaš, M. (2018). Konstrukce termoelektrického chladícího zařízení: Thermoelectric cooler construction. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/41601

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Murgaš, Martin. “Konstrukce termoelektrického chladícího zařízení: Thermoelectric cooler construction.” 2018. Thesis, Brno University of Technology. Accessed April 18, 2021. http://hdl.handle.net/11012/41601.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Murgaš, Martin. “Konstrukce termoelektrického chladícího zařízení: Thermoelectric cooler construction.” 2018. Web. 18 Apr 2021.

Vancouver:

Murgaš M. Konstrukce termoelektrického chladícího zařízení: Thermoelectric cooler construction. [Internet] [Thesis]. Brno University of Technology; 2018. [cited 2021 Apr 18]. Available from: http://hdl.handle.net/11012/41601.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Murgaš M. Konstrukce termoelektrického chladícího zařízení: Thermoelectric cooler construction. [Thesis]. Brno University of Technology; 2018. Available from: http://hdl.handle.net/11012/41601

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas A&M University

5. Kim, Suk Lae. Thermally Driven Energy Conversion and Storage Based on Organic Nanocomposites.

Degree: PhD, Mechanical Engineering, 2017, Texas A&M University

URL: http://hdl.handle.net/1969.1/161327

► Thermoelectric (TE) energy conversion is very effective in capturing low-grade waste heat to supply electricity particularly to small devices such as sensors, wireless communication units,… (more)

Subjects/Keywords: Thermoelectric; Organic; Flexible; Soret effect; Power generation; Wearable

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APA (6^th Edition):

Kim, S. L. (2017). Thermally Driven Energy Conversion and Storage Based on Organic Nanocomposites. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/161327

Chicago Manual of Style (16^th Edition):

Kim, Suk Lae. “Thermally Driven Energy Conversion and Storage Based on Organic Nanocomposites.” 2017. Doctoral Dissertation, Texas A&M University. Accessed April 18, 2021. http://hdl.handle.net/1969.1/161327.

MLA Handbook (7^th Edition):

Kim, Suk Lae. “Thermally Driven Energy Conversion and Storage Based on Organic Nanocomposites.” 2017. Web. 18 Apr 2021.

Vancouver:

Kim SL. Thermally Driven Energy Conversion and Storage Based on Organic Nanocomposites. [Internet] [Doctoral dissertation]. Texas A&M University; 2017. [cited 2021 Apr 18]. Available from: http://hdl.handle.net/1969.1/161327.

Council of Science Editors:

Kim SL. Thermally Driven Energy Conversion and Storage Based on Organic Nanocomposites. [Doctoral Dissertation]. Texas A&M University; 2017. Available from: http://hdl.handle.net/1969.1/161327

Leiden University

6. Lemut, Gal. Transport properties of a Weyl superconductor in a vortex lattice.

Degree: 2019, Leiden University

URL: http://hdl.handle.net/1887/77000

► Building on the discovery that a Weyl superconductor in a magnetic field supports chiral Landau level motion along the vortex lines, we investigate its transport… (more)

Subjects/Keywords: Weyl semimetal; superconductor; Landau levels; Abrikosov lattice; topology; thermoelectric effect

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APA (6^th Edition):

Lemut, G. (2019). Transport properties of a Weyl superconductor in a vortex lattice. (Masters Thesis). Leiden University. Retrieved from http://hdl.handle.net/1887/77000

Chicago Manual of Style (16^th Edition):

Lemut, Gal. “Transport properties of a Weyl superconductor in a vortex lattice.” 2019. Masters Thesis, Leiden University. Accessed April 18, 2021. http://hdl.handle.net/1887/77000.

MLA Handbook (7^th Edition):

Lemut, Gal. “Transport properties of a Weyl superconductor in a vortex lattice.” 2019. Web. 18 Apr 2021.

Vancouver:

Lemut G. Transport properties of a Weyl superconductor in a vortex lattice. [Internet] [Masters thesis]. Leiden University; 2019. [cited 2021 Apr 18]. Available from: http://hdl.handle.net/1887/77000.

Council of Science Editors:

Lemut G. Transport properties of a Weyl superconductor in a vortex lattice. [Masters Thesis]. Leiden University; 2019. Available from: http://hdl.handle.net/1887/77000

Florida International University

7. Kiflemariam, Robel. Heat-Driven Self-Cooling System Based On Thermoelectric Generation Effect.

Degree: PhD, Mechanical Engineering, 2015, Florida International University

URL: https://digitalcommons.fiu.edu/etd/2281 ; 10.25148/etd.FIDC000179 ; FIDC000179

► This research entails the first comprehensive and systematic study on a heat-driven, self-cooling application based on the thermoelectric generation effect. The system was studied… (more)

▼ This research entails the first comprehensive and systematic study on a heat-driven, self-cooling application based on the thermoelectric generation effect. The system was studied using the first and second laws of thermodynamics to provide a solid and basic understanding of the physical principles governing the system. Multiphysics equations that relate heat transfer, fluid dynamics and thermoelectric generation are derived. The equations are developed with increasing complexity, from the basic Carnot heat engine to externally and internally irreversible engines. A computational algorithm to systematically use the fundamental equations has been presented and computer code is implemented based on the algorithm. Experiments were conducted to analyze the geometric and system parameters affecting the application of thermoelectric based self-cooling in devices. Experimental results show that for the highest heat input studied, the temperature of the device has been reduced by 20-40% as compared to the natural convection case. In addition, it has been found that in the self-cooling cases studied, convection thermal resistance could account for up to 60% of the total thermal resistance. A general numerical methodology was developed to predict steady as well as transient thermal and electrical behavior of a thermoelectric generation-based self-cooling system. The methodology is implemented by using equation modeling capabilities to capture the thermo-electric coupled interaction in TEG elements, enabling the simulation of major heating effects as well as temperature and spatial dependent properties. An alternative methodology was also presented, which integrates specialized ANSI-C code to integrate thermoelectric effects, temperature-dependent properties and transient boundary conditions. It has been shown that the computational model is able to predict the experimental data with good accuracy (within 5% error). A parametric study has been done using the model to study the effect of heat sink geometry on device temperature and power produced by TEG arrays. In addition, a dynamic model suited for integration in control systems is developed. Therefore, the study has shown the potential for a heat driven self-cooling system and provides a comprehensive set of tools for analysis and design of thermoelectric generation. Advisors/Committee Members: Cheng-Xian Lin, Yiding Cao, Bilal El-Zahab, Nezih Pala, Gang Quan.

Subjects/Keywords: Mechanical Engineering; Thermoelectric effect; Self-cooling; Energy Systems

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APA (6^th Edition):

Kiflemariam, R. (2015). Heat-Driven Self-Cooling System Based On Thermoelectric Generation Effect. (Doctoral Dissertation). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/2281 ; 10.25148/etd.FIDC000179 ; FIDC000179

Chicago Manual of Style (16^th Edition):

Kiflemariam, Robel. “Heat-Driven Self-Cooling System Based On Thermoelectric Generation Effect.” 2015. Doctoral Dissertation, Florida International University. Accessed April 18, 2021. https://digitalcommons.fiu.edu/etd/2281 ; 10.25148/etd.FIDC000179 ; FIDC000179.

MLA Handbook (7^th Edition):

Kiflemariam, Robel. “Heat-Driven Self-Cooling System Based On Thermoelectric Generation Effect.” 2015. Web. 18 Apr 2021.

Vancouver:

Kiflemariam R. Heat-Driven Self-Cooling System Based On Thermoelectric Generation Effect. [Internet] [Doctoral dissertation]. Florida International University; 2015. [cited 2021 Apr 18]. Available from: https://digitalcommons.fiu.edu/etd/2281 ; 10.25148/etd.FIDC000179 ; FIDC000179.

Council of Science Editors:

Kiflemariam R. Heat-Driven Self-Cooling System Based On Thermoelectric Generation Effect. [Doctoral Dissertation]. Florida International University; 2015. Available from: https://digitalcommons.fiu.edu/etd/2281 ; 10.25148/etd.FIDC000179 ; FIDC000179

University of Illinois – Urbana-Champaign

8. Park, Kyeong Hyun. Theoretical investigation of thermoelectric properties of bulk and nano-scaled semiconductors.

Degree: MS, 1200, 2012, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/34581

► Even though thermoelectric effects have drawn more attention these days due to environmental and economic reasons, the efficiency of the thermoelectric technology is still limited… (more)

Subjects/Keywords: Thermoelectric effects; Seebeck effect; Thermal conductivity; Nanowire; Semiconductors

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Park, K. H. (2012). Theoretical investigation of thermoelectric properties of bulk and nano-scaled semiconductors. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/34581

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Park, Kyeong Hyun. “Theoretical investigation of thermoelectric properties of bulk and nano-scaled semiconductors.” 2012. Thesis, University of Illinois – Urbana-Champaign. Accessed April 18, 2021. http://hdl.handle.net/2142/34581.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Park, Kyeong Hyun. “Theoretical investigation of thermoelectric properties of bulk and nano-scaled semiconductors.” 2012. Web. 18 Apr 2021.

Vancouver:

Park KH. Theoretical investigation of thermoelectric properties of bulk and nano-scaled semiconductors. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2012. [cited 2021 Apr 18]. Available from: http://hdl.handle.net/2142/34581.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Park KH. Theoretical investigation of thermoelectric properties of bulk and nano-scaled semiconductors. [Thesis]. University of Illinois – Urbana-Champaign; 2012. Available from: http://hdl.handle.net/2142/34581

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Houston

9. -9597-8591. Evaluation of Implementing Thermoelectric Materials as a Power Generator.

Degree: MS, Mechanical Engineering, 2016, University of Houston

URL: http://hdl.handle.net/10657/3198

► The challenge of finding new energy sources or improving the efficiency of machines has become an important priority to scientists. A huge portion of provided… (more)

Subjects/Keywords: Thermoelectrics; Tubular thermoelectric; Thermoelectric generators (TEG); TTEG; Seebeck effect; Energy harvesting; Energy recovery; Heat recovery; HTS; Simscape; TTEGs

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APA (6^th Edition):

-9597-8591. (2016). Evaluation of Implementing Thermoelectric Materials as a Power Generator. (Masters Thesis). University of Houston. Retrieved from http://hdl.handle.net/10657/3198

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Chicago Manual of Style (16^th Edition):

-9597-8591. “Evaluation of Implementing Thermoelectric Materials as a Power Generator.” 2016. Masters Thesis, University of Houston. Accessed April 18, 2021. http://hdl.handle.net/10657/3198.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

MLA Handbook (7^th Edition):

-9597-8591. “Evaluation of Implementing Thermoelectric Materials as a Power Generator.” 2016. Web. 18 Apr 2021.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

-9597-8591. Evaluation of Implementing Thermoelectric Materials as a Power Generator. [Internet] [Masters thesis]. University of Houston; 2016. [cited 2021 Apr 18]. Available from: http://hdl.handle.net/10657/3198.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Council of Science Editors:

-9597-8591. Evaluation of Implementing Thermoelectric Materials as a Power Generator. [Masters Thesis]. University of Houston; 2016. Available from: http://hdl.handle.net/10657/3198

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Brno University of Technology

10. Vorálek, Jan. Kontrolér termoelektrického chladiče infračerveného fotodetektoru: Thermoelectric cooler controller for infrared detector.

Degree: 2015, Brno University of Technology

URL: http://hdl.handle.net/11012/39576

► This thesis deals with design of thermoelectric cooler controller. It contains a description of thermoelectric coolers – their principle and requirements on power supply. It… (more)

Subjects/Keywords: Termoelektrický chladič; termoelektrický jev; PID regulátor; PSD regulátor; Atmel AVR; Thermoelectric cooler; thermoelectric effect; PID controller; PSD controller; Atmel AVR

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APA (6^th Edition):

Vorálek, J. (2015). Kontrolér termoelektrického chladiče infračerveného fotodetektoru: Thermoelectric cooler controller for infrared detector. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/39576

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Vorálek, Jan. “Kontrolér termoelektrického chladiče infračerveného fotodetektoru: Thermoelectric cooler controller for infrared detector.” 2015. Thesis, Brno University of Technology. Accessed April 18, 2021. http://hdl.handle.net/11012/39576.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Vorálek, Jan. “Kontrolér termoelektrického chladiče infračerveného fotodetektoru: Thermoelectric cooler controller for infrared detector.” 2015. Web. 18 Apr 2021.

Vancouver:

Vorálek J. Kontrolér termoelektrického chladiče infračerveného fotodetektoru: Thermoelectric cooler controller for infrared detector. [Internet] [Thesis]. Brno University of Technology; 2015. [cited 2021 Apr 18]. Available from: http://hdl.handle.net/11012/39576.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Vorálek J. Kontrolér termoelektrického chladiče infračerveného fotodetektoru: Thermoelectric cooler controller for infrared detector. [Thesis]. Brno University of Technology; 2015. Available from: http://hdl.handle.net/11012/39576

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

11. Vieira, Emanuel Antunes. Aumento do rendimento de módulos fotovoltaicos com aproveitamento da energia térmica para geração termoelétrica de estado sólido.

Degree: 2018, Universidade Federal de Santa Maria; Centro de Tecnologia; Programa de Pós-Graduação em Engenharia Elétrica; UFSM; Brasil; Engenharia Elétrica

URL: http://repositorio.ufsm.br/handle/1/14061

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES

The Sun is the main source of energy of the Earth’s atmosphere-ocean-land system. The technological… (more)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES

The Sun is the main source of energy of the Earth’s atmosphere-ocean-land system. The technological society is highly depended on the solar energy converted and stored in reservoirs, such as oceans, rivers, winds, plants, animals and fossil fuels. On the other hand, the direct conversion of the incident solar irradiance on electric power employing photovoltaic systems is a key component of the current energy matrix to fulfill our ever-growing energy needs. However, the efficiency of photovoltaic systems is dependent on the panel temperature. Here is shown that the thermal energy retained in photovoltaic panels can be employed to increase the overall system efficiency by converting directly thermal energy into electrical energy based on the thermoelectric effect (Seebeck effect). In order to demonstrate the feasibility of the system, it was designed and developed a proof-of-concept prototype of a solid-state photovoltaic and thermoelectric cogeneration system. The performance of the prototype was evaluated by comparing the experimental results and the theoretical expectations. Although the thermoelectric conversion process has a low profile, the system has a high degree of reliability and low maintenance requirements, high durability and no need for moving parts. The final results demonstrate that the efficiency of photovoltaic systems can be increased by employing thermoelectric energy recovery systems. It is expected that this study can be a starting point for more sophisticate evaluation of the energy potential of photovoltaic and thermoelectric cogeneration systems necessary for large-scale deployment in industrial power plants.

O Sol é a principal fonte de energia existente no sistema atmosfera-oceano-terra. A sociedade tecnológica atual depende muito da energia solar convertida e armazenada de alguma forma em reservatórios tais como oceanos, rios, ventos, plantas, animais e combustíveis fósseis. Por outro lado, a conversão direta da radiação solar em energia elétrica empregado sistemas fotovoltaicos será um componente chave da nossa matriz energética, esses sistemas possuem capacidade para atender às necessidades energéticas atuais. No entanto, a eficiência dos sistemas fotovoltaicos depende da temperatura do painel. Esta dissertação quer mostrar que a energia térmica retida em painéis fotovoltaicos pode ser empregada para aumentar sua eficiência total convertendo diretamente a energia térmica em energia elétrica com base no efeito termoelétrico (efeito Seebeck). Para demonstrar a viabilidade desta composição desenvolveu-se um protótipo de cogeração fotovoltaica-termoelétrica de estado sólido. O desempenho deste protótipo foi avaliado comparando-se os resultados experimentais e as expectativas teóricas. Mostrou-se que embora o processo de conversão termoelétrica tenha baixo rendimento elétrico, o gerador termoelétrico pode esfriar o painel fotovoltaico com um alto grau de confiabilidade, baixa manutenção,…

Advisors/Committee Members: Farret, Felix Alberto, Canha, Luciane Neves, Marafiga, Eduardo Bonnuncielli.

Subjects/Keywords: Cogeração termoelétrica-fotovoltaica; Rendimento fotovoltaico; Efeito termoelétrico; Thermoelectric-photovoltaic cogeneration; Photovoltaic efficiency; Thermoelectric effect; CNPQ::ENGENHARIAS::ENGENHARIA ELETRICA

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Vieira, E. A. (2018). Aumento do rendimento de módulos fotovoltaicos com aproveitamento da energia térmica para geração termoelétrica de estado sólido. (Masters Thesis). Universidade Federal de Santa Maria; Centro de Tecnologia; Programa de Pós-Graduação em Engenharia Elétrica; UFSM; Brasil; Engenharia Elétrica. Retrieved from http://repositorio.ufsm.br/handle/1/14061

Chicago Manual of Style (16^th Edition):

Vieira, Emanuel Antunes. “Aumento do rendimento de módulos fotovoltaicos com aproveitamento da energia térmica para geração termoelétrica de estado sólido.” 2018. Masters Thesis, Universidade Federal de Santa Maria; Centro de Tecnologia; Programa de Pós-Graduação em Engenharia Elétrica; UFSM; Brasil; Engenharia Elétrica. Accessed April 18, 2021. http://repositorio.ufsm.br/handle/1/14061.

MLA Handbook (7^th Edition):

Vieira, Emanuel Antunes. “Aumento do rendimento de módulos fotovoltaicos com aproveitamento da energia térmica para geração termoelétrica de estado sólido.” 2018. Web. 18 Apr 2021.

Vancouver:

Vieira EA. Aumento do rendimento de módulos fotovoltaicos com aproveitamento da energia térmica para geração termoelétrica de estado sólido. [Internet] [Masters thesis]. Universidade Federal de Santa Maria; Centro de Tecnologia; Programa de Pós-Graduação em Engenharia Elétrica; UFSM; Brasil; Engenharia Elétrica; 2018. [cited 2021 Apr 18]. Available from: http://repositorio.ufsm.br/handle/1/14061.

Council of Science Editors:

Vieira EA. Aumento do rendimento de módulos fotovoltaicos com aproveitamento da energia térmica para geração termoelétrica de estado sólido. [Masters Thesis]. Universidade Federal de Santa Maria; Centro de Tecnologia; Programa de Pós-Graduação em Engenharia Elétrica; UFSM; Brasil; Engenharia Elétrica; 2018. Available from: http://repositorio.ufsm.br/handle/1/14061

Université de Grenoble

12. Wang, Jiang. Etude de l'effect thermoélectrique magnétique en solidification directionnelle d'alliages Al-Cu. : Study on the thermoelectric magnetic effect in directional solidification of Al-Cu alloy.

Degree: Docteur es, Génie civil, 2013, Université de Grenoble

URL: http://www.theses.fr/2013GRENI051

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Nous étudions l'effet thermo-électrique et les phénomènes qui en résultent, forces et les courants thermoélectriques (TEC) sous l'action d'un champ magnétique externe imposé lors de… (more)

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Nous étudions l'effet thermo-électrique et les phénomènes qui en résultent, forces et les courants thermoélectriques (TEC) sous l'action d'un champ magnétique externe imposé lors de la solidification d'alliages métalliques. Nous avons utilisé des simulations numériques, des observations directes et des examens de laboratoire. L'interaction entre les courants thermo-électriques et le champ magnétique externe lors de la solidification se produit des forces électromagnétiques et donc un écoulement du métal liquide. Le résultat est nommé effet magnétique thermoélectrique (TEME). Les formulations de TEC, les forces et les équations gouvernant les écoulements TEM sont donnés. Afin de mieux prouver l'existence de la TEME, des expériences par méthode d'imagerie à rayons X menées au synchrtron ont été utilisées pour observer in-situ et en temps réel l'action directe des forces et les mouvements TEM pendant la solidification directionnelle des alliages Al-Cu. Nous avons montré la cohérence raisonnable entre les calculs analytiques et des simulations numériques qui ont exécuté avec les mêmes conditions de traitement. En outre, la capacité des écoulements thermo-électriques à influer sur la microstructure lors de la solidification directionnelle sont expérimentalement évaluées dans les autres cas en réalité. La solidification directionnelle d'une seule phase de formation des alliages Al-Cu sous divers champs magnétiques montre que les écoulements TEM sont capables de modifier la forme de l'interface liquide-solide conduisant à des morphologies différentes. L'effet le plus intense se produit dans différents champs magnétiques pour différentes morphologies, en effet, le champ magnétique élevé est nécessaire pour la morphologie a une plus petite longueur typique. Ceci est en accord avec le comportement des vitesses de TEM qui varient avec les champs magnétiques imposés ainsi que les différentes échelles de longueur typique. Cette variation est confirmée par des simulations numériques 3D. Nous montrons que les dendrites primaires et à l'avant de la phase eutectique, peuvent être modifiés par les mouvements TEM et les forces de TEM dans le solide pour améliorer la croissance de la phase de Al2Cu facettes primaire pendant la solidification des Al-40wt%Cu hypereutectiques. Le mécanisme de renforcement de la croissance de la phase facettes Al2Cu est confirmé par la transmission électronique observation au microscope, et la raison de la formation de la structure de croissance de couple de Al-26wt% Cu alliages est vérifiée par le test de l'analyse thermique différentielle. Ainsi, nous pouvons affirmer que le champ magnétique élevé facilite la formation de la structure de la croissance de couple pour hypoeutectiques alliages Al-Cu, et favorise la croissance de la phase Al2Cu primaire pour hypereutectiques Al-Cu alliages.

We have investigated the thermoelectric magnetic (TEM) forces and flows resulting from the interaction between the internal thermoelectric currents (TEC) and the imposed external magnetic field during solidification.…

Advisors/Committee Members: Fautrelle, Yves (thesis director), Ren, Zhongming (thesis director).

Subjects/Keywords: Courants thermoélectriques (TEC); Effet magnétique thermoélectrique (TEM effect); Forces magnétiques thermoélectriques (TEM forces); Ecoulements magnétiques thermoélectriques (TEM flows); Imagerie par rayons X; Thermoelectric currents (TEC); Thermoelectric magnetic effect (TEM effect); Thermoelectric magnetic forces (TEM forces); Thermoelectric magnetic flows (TEM flows); Synchrotron X-ray imaging

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wang, J. (2013). Etude de l'effect thermoélectrique magnétique en solidification directionnelle d'alliages Al-Cu. : Study on the thermoelectric magnetic effect in directional solidification of Al-Cu alloy. (Doctoral Dissertation). Université de Grenoble. Retrieved from http://www.theses.fr/2013GRENI051

Chicago Manual of Style (16^th Edition):

Wang, Jiang. “Etude de l'effect thermoélectrique magnétique en solidification directionnelle d'alliages Al-Cu. : Study on the thermoelectric magnetic effect in directional solidification of Al-Cu alloy.” 2013. Doctoral Dissertation, Université de Grenoble. Accessed April 18, 2021. http://www.theses.fr/2013GRENI051.

MLA Handbook (7^th Edition):

Wang, Jiang. “Etude de l'effect thermoélectrique magnétique en solidification directionnelle d'alliages Al-Cu. : Study on the thermoelectric magnetic effect in directional solidification of Al-Cu alloy.” 2013. Web. 18 Apr 2021.

Vancouver:

Wang J. Etude de l'effect thermoélectrique magnétique en solidification directionnelle d'alliages Al-Cu. : Study on the thermoelectric magnetic effect in directional solidification of Al-Cu alloy. [Internet] [Doctoral dissertation]. Université de Grenoble; 2013. [cited 2021 Apr 18]. Available from: http://www.theses.fr/2013GRENI051.

Council of Science Editors:

Wang J. Etude de l'effect thermoélectrique magnétique en solidification directionnelle d'alliages Al-Cu. : Study on the thermoelectric magnetic effect in directional solidification of Al-Cu alloy. [Doctoral Dissertation]. Université de Grenoble; 2013. Available from: http://www.theses.fr/2013GRENI051

Brno University of Technology

13. Lokaj, Jakub. Termoelektrický generátor malého výkonu: Low power thermoelectric generator.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/23914

► The bachelor thesis deals with the description the physical nature of the conversion of thermal energy into electrical energy and construction of thermoelectric generator. The… (more)

Subjects/Keywords: Termoelektrický generátor; termoelektrický modul; termoelektrické jevy; Seebeckův jev; termoelektrické materiály; DC/DC měnič; elektřina; termoelektrické aplikace; Energy harvesting; senzory; Thermoelectric generator; thermoelectric module; thermoelectric phenomenons; Seebeck effect; thermoelectric materials; DC/DC converter; electricity; thermoelectric applications; Energy harvesting; sensors

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Lokaj, J. (2019). Termoelektrický generátor malého výkonu: Low power thermoelectric generator. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/23914

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lokaj, Jakub. “Termoelektrický generátor malého výkonu: Low power thermoelectric generator.” 2019. Thesis, Brno University of Technology. Accessed April 18, 2021. http://hdl.handle.net/11012/23914.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lokaj, Jakub. “Termoelektrický generátor malého výkonu: Low power thermoelectric generator.” 2019. Web. 18 Apr 2021.

Vancouver:

Lokaj J. Termoelektrický generátor malého výkonu: Low power thermoelectric generator. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Apr 18]. Available from: http://hdl.handle.net/11012/23914.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lokaj J. Termoelektrický generátor malého výkonu: Low power thermoelectric generator. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/23914

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

14. Carlos Alfredo Rodrigues de Carvalho. Estudo de viabilidade do aproveitamento do calor de escape para geração energia elétrica em automóveis.

Degree: 2012, Universidade de Taubaté

URL: http://www.bdtd.unitau.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=573

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Atualmente um dos grandes responsáveis pela emissão de CO2 (Dióxido de Carbono) são os veículos movidos a motor de combustão interna, em sua maioria os… (more)

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Atualmente um dos grandes responsáveis pela emissão de CO2 (Dióxido de Carbono) são os veículos movidos a motor de combustão interna, em sua maioria os automóveis. Pesquisas recentes têm mostrado maneiras de aumentar a eficiência dos automóveis por meio do aproveitamento do calor de exaustão para geração de energia elétrica, com consequente redução no consumo de combustível. Esta dissertação tem por objetivo apresentar um estudo de viabilidade técnica de um gerador termoelétrico aproveitando o calor residual dos gases de exaustão de um motor de combustão interna para geração de energia elétrica. O trabalho apresenta o modelamento matemático e a implementação de um protótipo para realização dos ensaios para a obtenção de resultados experimentais. O protótipo foi montado utilizando módulos termolétricos cujo princípio de funcionamento é baseado nos efeitos Seebeck e Peltier, que devido ao conceito de reversibilidade podem funcionar como geradores elétricos, aquecedores ou refrigeradores. Por meio das equações teóricas e dos resultados dos ensaios experimentais foi possível avaliar o desempenho do sistema de geração de energia elétrica, determinar o comportamento dos principais parâmetros envolvidos e finalmente concluir sobre a exequibilidade e viabilidade do projeto.

Currently one of the most responsible for CO2 (Carbon Dioxide) emissions are vehicles powered by internal combustion engine, in their majority the automobiles. Recent research has shown ways to improve the efficiency of automobiles through the use of exhaust heat to generate electric power, with consequent reduction in fuel consumption. This paper aims to present a technical feasibility study of a thermoelectric generator using the residual heat from exhaust gases of an internal combustion engine to generate electric power. The paper presents the mathematical modeling and implementation of a prototype for tests to obtaining experimental results. The prototype was assembled using thermoelectric modules whose operating principle is based on the phenomena called Seebeck and Peltier Effects, which due to the concept of reversibility can act as electric generators, heaters or coolers. Through the theoretical equations and experimental results it was possible to evaluate the performance of electric power generation system, determine the behavior of the main parameters and finally conclude on the feasibility and viability of the project.

Advisors/Committee Members: Ederaldo Godoy Júnior, Edilson Alexandre Camargo, José Rui Camargo.

Subjects/Keywords: ENGENHARIA MECANICA; calor residual; efeito seebeck; gerador termoelétrico; residual heat; seebeck effect; thermoelectric generator

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Carvalho, C. A. R. d. (2012). Estudo de viabilidade do aproveitamento do calor de escape para geração energia elétrica em automóveis. (Thesis). Universidade de Taubaté. Retrieved from http://www.bdtd.unitau.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=573

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Carvalho, Carlos Alfredo Rodrigues de. “Estudo de viabilidade do aproveitamento do calor de escape para geração energia elétrica em automóveis.” 2012. Thesis, Universidade de Taubaté. Accessed April 18, 2021. http://www.bdtd.unitau.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=573.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Carvalho, Carlos Alfredo Rodrigues de. “Estudo de viabilidade do aproveitamento do calor de escape para geração energia elétrica em automóveis.” 2012. Web. 18 Apr 2021.

Vancouver:

Carvalho CARd. Estudo de viabilidade do aproveitamento do calor de escape para geração energia elétrica em automóveis. [Internet] [Thesis]. Universidade de Taubaté; 2012. [cited 2021 Apr 18]. Available from: http://www.bdtd.unitau.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=573.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Carvalho CARd. Estudo de viabilidade do aproveitamento do calor de escape para geração energia elétrica em automóveis. [Thesis]. Universidade de Taubaté; 2012. Available from: http://www.bdtd.unitau.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=573

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

15. Leticia Borges Silverio. Análise de um condicionador de ar automotivo utilizando o efeito termoelétrico.

Degree: 2012, Universidade de Taubaté

URL: http://www.bdtd.unitau.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=577

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Este trabalho tem por objetivo apresentar um estudo de viabilidade técnica da utilização de módulos termoelétricos para condicionamento de ar automotivo, com ênfase ao sistema… (more)

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Este trabalho tem por objetivo apresentar um estudo de viabilidade técnica da utilização de módulos termoelétricos para condicionamento de ar automotivo, com ênfase ao sistema de resfriamento. O sistema termoelétrico de refrigeração baseiase no efeito descoberto por Jean Charles Athanase Peltier em 1834, onde uma corrente elétrica flui na junção de dois materiais semicondutores de propriedades diferentes fazendo com que haja um gradiente de temperatura na junção dos materiais. Os módulos termoelétricos são fabricados por materiais semicondutores selados entre duas placas e, conforme o sentido que a corrente flui, uma superfície da placa torna-se aquecida e a outra resfriada. A refrigeração proveniente dos fenômenos termoelétricos surgiu como uma alternativa aos meios convencionais de refrigeração, pois não gera impactos ambientais, não produz barulho, não possui partes móveis, podendo ser montando em variadas posições de acordo com a necessidade, além de ocupar um volume pequeno em comparação com os outros sistemas. Os efeitos termoelétricos e suas aplicações são apresentados neste estudo, assim como o modelo matemático do sistema de refrigeração, que permite determinar o desempenho do sistema. Dissipadores de calor comercialmente disponíveis são analisados para a determinação da melhor troca térmica para o sistema e protótipos são montados para a obtenção de resultados experimentais de um refrigerador, a fim de verificar sua viabilidade e funcionalidade.

This paper aims to present a technical feasibility study of the use of thermoelectric modules for automotive air conditioning, with emphasis on the cooling system. The thermoelectric cooling system is based on the effect discovered by Jean Charles Athanase Peltier in 1834, where an electric current flows at the junction of two semiconductor materials of different properties so that there is a temperature gradient at the junction of the materials. The thermoelectric modules are manufactured by semiconductor material sealed between two sheets and, as the current flows, a plate surface becomes heated and the other cooled. Thermoelectric cooling from phenomena like Peltier effect has emerged as an alternative to conventional cooling systems, it does not generate environmental impact, do not produce noise, has no moving parts, the system can be mounted in various positions according to the need, and occupies a small volume in comparison with other systems. Thermoelectric effects and their applications are presented in this study, as well as the mathematical modeling of the cooling system, which determines system performance. Heat sinks commercially available are analyzed for determining the best heat transfer to the system and prototypes are assembled to obtain the experimental results for a refrigerator in order to verify its feasibility and functionality.

Advisors/Committee Members: José Rui Camargo, Ederaldo Godoy Júnior, Edilson Alexandre Camargo.

Subjects/Keywords: efeito termoelétrico; peltier; condicionador de ar; thermoelectric effect; peltier; air conditioner; ENGENHARIA MECANICA

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Silverio, L. B. (2012). Análise de um condicionador de ar automotivo utilizando o efeito termoelétrico. (Thesis). Universidade de Taubaté. Retrieved from http://www.bdtd.unitau.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=577

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Silverio, Leticia Borges. “Análise de um condicionador de ar automotivo utilizando o efeito termoelétrico.” 2012. Thesis, Universidade de Taubaté. Accessed April 18, 2021. http://www.bdtd.unitau.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=577.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Silverio, Leticia Borges. “Análise de um condicionador de ar automotivo utilizando o efeito termoelétrico.” 2012. Web. 18 Apr 2021.

Vancouver:

Silverio LB. Análise de um condicionador de ar automotivo utilizando o efeito termoelétrico. [Internet] [Thesis]. Universidade de Taubaté; 2012. [cited 2021 Apr 18]. Available from: http://www.bdtd.unitau.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=577.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Silverio LB. Análise de um condicionador de ar automotivo utilizando o efeito termoelétrico. [Thesis]. Universidade de Taubaté; 2012. Available from: http://www.bdtd.unitau.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=577

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Penn State University

16. Pulavarthy, Raghu. Size Effects on Thermal Transport in Materials and Interfaces.

Degree: 2016, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/1c18df77c

► With the ever-continuing miniaturization of electronics and micro/nano electromechanical systems, materials length-scale is reduced to a level where they exhibit physical properties significantly different from… (more)

▼ With the ever-continuing miniaturization of electronics and micro/nano electromechanical systems, materials length-scale is reduced to a level where they exhibit physical properties significantly different from the bulk values. Emergence of novel materials with variation in parameters like thickness, composition, density, porosity etc., has made it possible to witness exceptional physical properties. Significant research efforts have been directed towards the size dependency of materials’ ability to carry current, heat or mechanical load. This dissertation focuses on thermal properties since very large scale integration of electronics or sensors implies a rapid increase in the heat dissipation density and temperature. Accurate thermal characterization of the materials and their interfaces is essential for a reliable design. It is also essential to design efficient heat removal channels for thermal management of electronics. In this dissertation, we argue that if size effect can breakdown physical laws in individual domains, it can also couple the various domains. Such length-scale induced multi-domain coupling can open novel transduction schemes. For example, thermal properties of materials can be tuned by application of mechanical strain. This dissertation is aimed at studying the size effect on thermal transport phenomenon in materials and the coupling with other physical domains. The objective of this research is to experimentally study the influence of these parameters on thermal properties of solids and to explore the size-induced coupling between physical domains such that these materials can be actively tuned to obtain the desired properties. Our experimental framework is based on an Infrared microscopy based technique that maps the temperature field in microfabricated specimens and then perform energy balance to determine its thermal conductivity. This technique was applied to materials with low dielectric constant (low-k) that are used as inter-layer dielectrics to enable faster communication in electronics by reducing the delay time. Typically, lower dielectric constant is achieved by making the material porous, which also lowers the thermal conductivity. The low thermal conductivity measurement is particularly challenging because only high resolution temperature mapping can quantify the thermal gradient. We conducted a systematic study on thermal conductivity of these materials using simple fabrication process. It was found that the thermal conductivity decreases with porosity and increases with density and the values obtained are consistent with the empirical models in the literature. Interfaces between dissimilar materials are ubiquitous in electronic devices. From a thermal transport standpoint, the interface is as important as the constituent material. Interfacial Thermal Resistance (ITR) is the property that determines the quality of an interface. ITR is one of the most challenging measurands in experimental heat transfer, particularly for micro and nanoscale thin films. It is also the dominating… Advisors/Committee Members: Md Amanul Haque, Dissertation Advisor/Co-Advisor, Md Amanul Haque, Committee Chair/Co-Chair, Adrianus Van Duin, Committee Member, Tak Sing Wong, Committee Member, Michael T Lanagan, Outside Member, Karen Thole, Committee Member.

Subjects/Keywords: thermal conductivity; interfacial thermal resistance; multi-domain coupling; thin films; size effect; thermoelectric

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Pulavarthy, R. (2016). Size Effects on Thermal Transport in Materials and Interfaces. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/1c18df77c

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Pulavarthy, Raghu. “Size Effects on Thermal Transport in Materials and Interfaces.” 2016. Thesis, Penn State University. Accessed April 18, 2021. https://submit-etda.libraries.psu.edu/catalog/1c18df77c.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Pulavarthy, Raghu. “Size Effects on Thermal Transport in Materials and Interfaces.” 2016. Web. 18 Apr 2021.

Vancouver:

Pulavarthy R. Size Effects on Thermal Transport in Materials and Interfaces. [Internet] [Thesis]. Penn State University; 2016. [cited 2021 Apr 18]. Available from: https://submit-etda.libraries.psu.edu/catalog/1c18df77c.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Pulavarthy R. Size Effects on Thermal Transport in Materials and Interfaces. [Thesis]. Penn State University; 2016. Available from: https://submit-etda.libraries.psu.edu/catalog/1c18df77c

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Illinois – Urbana-Champaign

17. Koh, Youngjoon. Modeling of Joule heating and thermoelectric transport in thin film silicon for SJEM measurement.

Degree: MS, 0133, 2014, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/49679

► This thesis reports the finite element modeling of a quantitative nanometer-scale temperature distribution along the doped Si devices. The modeling replicates data acquisition technique of… (more)

Subjects/Keywords: Scanning Joule Expansion Microscopy; Thermoelectric effect; Joule heating; COMSOL; Thin film Si

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Koh, Y. (2014). Modeling of Joule heating and thermoelectric transport in thin film silicon for SJEM measurement. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/49679

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Koh, Youngjoon. “Modeling of Joule heating and thermoelectric transport in thin film silicon for SJEM measurement.” 2014. Thesis, University of Illinois – Urbana-Champaign. Accessed April 18, 2021. http://hdl.handle.net/2142/49679.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Koh, Youngjoon. “Modeling of Joule heating and thermoelectric transport in thin film silicon for SJEM measurement.” 2014. Web. 18 Apr 2021.

Vancouver:

Koh Y. Modeling of Joule heating and thermoelectric transport in thin film silicon for SJEM measurement. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2014. [cited 2021 Apr 18]. Available from: http://hdl.handle.net/2142/49679.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Koh Y. Modeling of Joule heating and thermoelectric transport in thin film silicon for SJEM measurement. [Thesis]. University of Illinois – Urbana-Champaign; 2014. Available from: http://hdl.handle.net/2142/49679

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of New Orleans

18. Crawford, Charles. Transverse Thermoelectric Effect.

Degree: MS, Physics, 2014, University of New Orleans

URL: https://scholarworks.uno.edu/td/1866

► Anisotropic thermoelectric effects can be measured in certain materials. Anisotropy can also be simulated using a repeated, layered structure of two materials cut at… (more)

Subjects/Keywords: thermoelectric effect; Seebeck; pletier; thermal conductivity; electrical conductivity; heat flux; electric potential; electric field

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APA (6^th Edition):

Crawford, C. (2014). Transverse Thermoelectric Effect. (Thesis). University of New Orleans. Retrieved from https://scholarworks.uno.edu/td/1866

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Crawford, Charles. “Transverse Thermoelectric Effect.” 2014. Thesis, University of New Orleans. Accessed April 18, 2021. https://scholarworks.uno.edu/td/1866.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Crawford, Charles. “Transverse Thermoelectric Effect.” 2014. Web. 18 Apr 2021.

Vancouver:

Crawford C. Transverse Thermoelectric Effect. [Internet] [Thesis]. University of New Orleans; 2014. [cited 2021 Apr 18]. Available from: https://scholarworks.uno.edu/td/1866.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Crawford C. Transverse Thermoelectric Effect. [Thesis]. University of New Orleans; 2014. Available from: https://scholarworks.uno.edu/td/1866

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Cambridge

19. Muench, Jakob. Photodetectors for graphene-based integrated photonics.

Degree: PhD, 2020, University of Cambridge

URL: https://doi.org/10.17863/CAM.63926 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.824307

► The development of integrated optical circuits has enabled a diverse portfolio of chipscale photonic applications-ranging from data communication over sensing to imaging-that is set to… (more)

▼ The development of integrated optical circuits has enabled a diverse portfolio of chipscale photonic applications-ranging from data communication over sensing to imaging-that is set to grow further as new device concepts in, for example, quantum information processing and optical neural networks mature. While silicon photonics has emerged as a viable candidate to translate proof-of-principle demonstrations to mass-manufacturing, the fabrication of photonic integrated circuits (PICs) and their subcomponents remains highly heterogeneous, which drives up cost and slows down progress towards faster and more power-efficient performance. In this dissertation, I demonstrate how single-layer graphene (SLG) can bring active functionality to arbitrary passive waveguide platforms, offering a more universal approach to developing integrated photonic components. SLG can be transferred to PICs without the limitations or complexity of traditional deposition or bonding processes. It also stands to outperform conventional semiconductors in terms of speed and spectral operating range due to its ultra-fast carrier dynamics, high carrier mobility, and gapless bandstructure. Using the key component for optical-to-electrical signal conversion-the photodetector-as an example, here I demonstrate graphene-based components on three different PIC platforms. First, I show plasmonic enhanced graphene photodetectors (GPDs) on silicon nitride waveguides, which generate a voltage from optically generated hot-carrier distributions in SLG via the photo-thermoelectric (PTE) effect. Then, I demonstrate PTE-GPDs-fabricated from layered material heterostructures-on a silicon-on-insulator microring resonator. Both detectors operate at Telecom wavelengths (λ = 1.55 μm), are compatible with high-speed (> 10 GHz) operations, and hold the current records in voltage responsivity-R ∼ 12 V/W and R ∼ 90 V/W-for waveguide-integrated GPDs fabricated from chemical vapour deposited and mechanically exfoliated SLG, respectively. I then go on to show how established GPD concepts can be translated to an integrated mid-infrared (λ = 3.8 μm) platform based on sub-wavelength grating waveguides in silicon and study how light-graphene interaction under in-plane incidence can be further optimised to improve GPD performance. Finally, I develop new approaches towards high-quality, scalable SLG on PICs, critically required to advance graphene-based integrated photonics towards industrial production.

Subjects/Keywords: Graphene; Layered Materials; Photodetectors; Integrated Photonics; Nanotechnology; Photo-thermoelectric Effect; Datacom; Telecom; Optoelectronics

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Muench, J. (2020). Photodetectors for graphene-based integrated photonics. (Doctoral Dissertation). University of Cambridge. Retrieved from https://doi.org/10.17863/CAM.63926 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.824307

Chicago Manual of Style (16^th Edition):

Muench, Jakob. “Photodetectors for graphene-based integrated photonics.” 2020. Doctoral Dissertation, University of Cambridge. Accessed April 18, 2021. https://doi.org/10.17863/CAM.63926 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.824307.

MLA Handbook (7^th Edition):

Muench, Jakob. “Photodetectors for graphene-based integrated photonics.” 2020. Web. 18 Apr 2021.

Vancouver:

Muench J. Photodetectors for graphene-based integrated photonics. [Internet] [Doctoral dissertation]. University of Cambridge; 2020. [cited 2021 Apr 18]. Available from: https://doi.org/10.17863/CAM.63926 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.824307.

Council of Science Editors:

Muench J. Photodetectors for graphene-based integrated photonics. [Doctoral Dissertation]. University of Cambridge; 2020. Available from: https://doi.org/10.17863/CAM.63926 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.824307

University of Cambridge

20. Muench, Jakob. Photodetectors for graphene-based integrated photonics.

Degree: PhD, 2020, University of Cambridge

URL: https://www.repository.cam.ac.uk/handle/1810/316811

► The development of integrated optical circuits has enabled a diverse portfolio of chipscale photonic applications—ranging from data communication over sensing to imaging—that is set to… (more)

▼ The development of integrated optical circuits has enabled a diverse portfolio of chipscale photonic applications—ranging from data communication over sensing to imaging—that is set to grow further as new device concepts in, for example, quantum information processing and optical neural networks mature. While silicon photonics has emerged as a viable candidate to translate proof-of-principle demonstrations to mass-manufacturing, the fabrication of photonic integrated circuits (PICs) and their subcomponents remains highly heterogeneous, which drives up cost and slows down progress towards faster and more power-efficient performance. In this dissertation, I demonstrate how single-layer graphene (SLG) can bring active functionality to arbitrary passive waveguide platforms, offering a more universal approach to developing integrated photonic components. SLG can be transferred to PICs without the limitations or complexity of traditional deposition or bonding processes. It also stands to outperform conventional semiconductors in terms of speed and spectral operating range due to its ultra-fast carrier dynamics, high carrier mobility, and gapless bandstructure. Using the key component for optical-to-electrical signal conversion—the photodetector—as an example, here I demonstrate graphene-based components on three different PIC platforms. First, I show plasmonic enhanced graphene photodetectors (GPDs) on silicon nitride waveguides, which generate a voltage from optically generated hot-carrier distributions in SLG via the photo-thermoelectric (PTE) effect. Then, I demonstrate PTE-GPDs—fabricated from layered material heterostructures—on a silicon-on-insulator microring resonator. Both detectors operate at Telecom wavelengths (λ = 1.55 μm), are compatible with high-speed (> 10 GHz) operations, and hold the current records in voltage responsivity—R ∼ 12 V/W and R ∼ 90 V/W—for waveguide-integrated GPDs fabricated from chemical vapour deposited and mechanically exfoliated SLG, respectively. I then go on to show how established GPD concepts can be translated to an integrated mid-infrared (λ = 3.8 μm) platform based on sub-wavelength grating waveguides in silicon and study how light-graphene interaction under in-plane incidence can be further optimised to improve GPD performance. Finally, I develop new approaches towards high-quality, scalable SLG on PICs, critically required to advance graphene-based integrated photonics towards industrial production.

Subjects/Keywords: Graphene; Layered Materials; Photodetectors; Integrated Photonics; Nanotechnology; Photo-thermoelectric Effect; Datacom; Telecom; Optoelectronics

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Muench, J. (2020). Photodetectors for graphene-based integrated photonics. (Doctoral Dissertation). University of Cambridge. Retrieved from https://www.repository.cam.ac.uk/handle/1810/316811

Chicago Manual of Style (16^th Edition):

Muench, Jakob. “Photodetectors for graphene-based integrated photonics.” 2020. Doctoral Dissertation, University of Cambridge. Accessed April 18, 2021. https://www.repository.cam.ac.uk/handle/1810/316811.

MLA Handbook (7^th Edition):

Muench, Jakob. “Photodetectors for graphene-based integrated photonics.” 2020. Web. 18 Apr 2021.

Vancouver:

Muench J. Photodetectors for graphene-based integrated photonics. [Internet] [Doctoral dissertation]. University of Cambridge; 2020. [cited 2021 Apr 18]. Available from: https://www.repository.cam.ac.uk/handle/1810/316811.

Council of Science Editors:

Muench J. Photodetectors for graphene-based integrated photonics. [Doctoral Dissertation]. University of Cambridge; 2020. Available from: https://www.repository.cam.ac.uk/handle/1810/316811

Université de Bordeaux I

21. Majee, Arghya. Effet thermoélectrique dans des dispersions colloïdales : Thermoelectric effect in colloidal dispersions.

Degree: Docteur es, Lasers, matière et nanosciences, 2012, Université de Bordeaux I

URL: http://www.theses.fr/2012BOR14568

►

Cette thèse porte sur le mouvement de particules colloïdales induit par l’effet thermoélectrique (ou effet Seebeck). Dans un électrolyte soumis à un gradient de température,… (more)

▼

Cette thèse porte sur le mouvement de particules colloïdales induit par l’effet thermoélectrique (ou effet Seebeck). Dans un électrolyte soumis à un gradient de température, les ions ont tendance à migrer à des vitesse qui différent d'une espèce à l'autre. On observe alors une accumulation de charge aux bords de l’échantillon. Ce déséquilibre induit un champ électrique qui agit sur les colloïdes chargés présents dans la solution. Cette contribution électrophorétique dans le champ de Seebeck s'additionne à la contribution directe de thermodiffusion. Comme résultat principal,nous obtenons la vitesse phorétique en fonction de la fraction volumique des particules et, dans le cas de polyélectrolytes, du poids moléculaire. Dans la seconde partie, nous étudions l’effet thermoélectrique pour une particule chauffée par absorption d’un faisceau laser. Le gradient de température est alors radial et l’effet Seebeck induit une charge nette dans le voisinage de la particule. Enfin, nous discutons les applications possibles de ce phénomène de thermocharge

In this work we study the motion induced in a colloidal dispersion by thethermoelectric or Seebeck effect. As its basic principle, the ions of the electrolytesolution start moving in a temperature gradient. In general, the velocity of one iondiffers from another. As a result, one observes a charge separation and a macroscopicelectric field. This thermoelectric field, in turn, acts upon the charged colloidalparticle present in the solution. Thus thermophoresis of the particle comprises of anelectrophoretic motion in the thermoelectric or Seebeck field. As an important result,we derive how the corresponding velocity of a colloidal particle depends upon thecolloidal volume fraction or on molecular weight for polymers. In a second part, westudy the thermoelectric effect due to a hot colloidal particle where a radialtemperature gradient is produced by the particle itself. In this temperature gradientthe same Seebeck effect takes place in the electrolyte solution. We find that the hotparticle carries a significant amount of charge around it. Whereas the amount ofsurface charges present at the boundaries of the sample container in the onedimensionalcase is rather insignificant. Possible applications of this thermochargingphenomenon are also discussed.

Advisors/Committee Members: Würger, Alois (thesis director).

Subjects/Keywords: Thermo-électrophorèse; Effet thermoélectrique; Effet Seebeck; Thermodiffusion; Colloïdes chargés; Thermocharge; Thermoelectrophoresis; Thermoelectric effect; Seebeck effect; Thermal diffusion; Charged colloids; Thermocharge

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Majee, A. (2012). Effet thermoélectrique dans des dispersions colloïdales : Thermoelectric effect in colloidal dispersions. (Doctoral Dissertation). Université de Bordeaux I. Retrieved from http://www.theses.fr/2012BOR14568

Chicago Manual of Style (16^th Edition):

Majee, Arghya. “Effet thermoélectrique dans des dispersions colloïdales : Thermoelectric effect in colloidal dispersions.” 2012. Doctoral Dissertation, Université de Bordeaux I. Accessed April 18, 2021. http://www.theses.fr/2012BOR14568.

MLA Handbook (7^th Edition):

Majee, Arghya. “Effet thermoélectrique dans des dispersions colloïdales : Thermoelectric effect in colloidal dispersions.” 2012. Web. 18 Apr 2021.

Vancouver:

Majee A. Effet thermoélectrique dans des dispersions colloïdales : Thermoelectric effect in colloidal dispersions. [Internet] [Doctoral dissertation]. Université de Bordeaux I; 2012. [cited 2021 Apr 18]. Available from: http://www.theses.fr/2012BOR14568.

Council of Science Editors:

Majee A. Effet thermoélectrique dans des dispersions colloïdales : Thermoelectric effect in colloidal dispersions. [Doctoral Dissertation]. Université de Bordeaux I; 2012. Available from: http://www.theses.fr/2012BOR14568

Indian Institute of Science

22. Femi, Olu Emmanuel. Microstructure Design And Interfacial Effects On Thermoelectric Properties Of Bi-Sb-Te System.

Degree: PhD, Faculty of Engineering, 2017, Indian Institute of Science

URL: http://etd.iisc.ac.in/handle/2005/2655

► Climate change is a subject of deep distress in today’s world. Over dependence on hydrocarbon has resulted in serious environmental problems. Rising sea level, global… (more)

▼ Climate change is a subject of deep distress in today’s world. Over dependence on hydrocarbon has resulted in serious environmental problems. Rising sea level, global warming and ozone layer depletion are the mainstream of any discuss world over. The collective goal of cutting carbon emission by the year 2020has prompted the search for clean, alternative energy sources. This effort are already yielding good reward as other forms of energy such as solar, wind, nuclear and hydro have received huge investment and renew interest over the past decade. Thermoelectric materials over the past decades have been tipped to replace conventional means of power generations as these materials have the ability to convert heat to electrical energy and vice versa. They are simple, have no moving parts and use no greenhouse gases. But the major drawback of these materials is their low conversion efficiency. Hence there is a need to enhance the efficiency of thermoelectric material to fulfill their undeniable potentials. A parameter called the thermoelectric figure of merit, ZT defines the efficiency of a thermoelectric material. ZT relates three non-mutually exclusive transport properties namely Seebeck coefficient, electrical conductivity and thermal conductivity. Efficient thermoelectric material should possess high Seebeck coefficient, high electrical conductivity and low thermal conductivity. Hence, one of the interesting ideas in the area of thermoelectric research is the concept of designing a bulk material with high density of phonon scattering centers so has to reduce the lattice contribution to thermal conductivity but at the same time have minimum impact oncharge carriers. This is usually achieved by utilizing interphase and grain boundaries which are localized defects to scatter phonons. The volume fraction of the grain/interphase boundaries can be control through phase modification and microstructure design. This thesis is centered on Bi-Sb-Te systems which are the present room temperature state of the earth thermoelectric material. The investigation revolves around developing a new kind of microstructure in the well-studied Bi-Sb-Te system that shows tremendous potential as a means to reduce lattice contribution to thermal conductivity. The idea of having both p and n-type thermoelectric material preferably from the same material was also a motivation in our investigation. The thesis isdivided into six chapters. The first chapter introduces the concept of thermoelectricity i.e. the direct conversion of thermal energy into electricity. The physics involved and contribution of individual to the science of thermoelectricity were enumerated. Efficiency, optimization and material selection for better thermoelectric performance were briefly enumerated. Prospective materials that are currently been investigated for better thermoelectric properties were also mentioned. The structure of the Bi-Sb-Te system which is the focus of this thesis is present in this chapter including doping effect on the thermoelectric performance… Advisors/Committee Members: Chattopadhyay, K (advisor), Ravishankar, N (advisor).

Subjects/Keywords: Thermoelectric Materials; Alternative Energy Sources; Semiconductors; Thermoelectricity; Bismuth-Antimony-Tellurium Systems; Thermoelectric Figure of Merit; BiSbTe Thermoelectric Materials; Seebeck Effect; Thermoelectric Nanomaterials; BISbTe Microstructure; Thermal Conductivity; Non-Ferrous Metal Systems; Bi-Sb-Te System; Materials Science

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Femi, O. E. (2017). Microstructure Design And Interfacial Effects On Thermoelectric Properties Of Bi-Sb-Te System. (Doctoral Dissertation). Indian Institute of Science. Retrieved from http://etd.iisc.ac.in/handle/2005/2655

Chicago Manual of Style (16^th Edition):

Femi, Olu Emmanuel. “Microstructure Design And Interfacial Effects On Thermoelectric Properties Of Bi-Sb-Te System.” 2017. Doctoral Dissertation, Indian Institute of Science. Accessed April 18, 2021. http://etd.iisc.ac.in/handle/2005/2655.

MLA Handbook (7^th Edition):

Femi, Olu Emmanuel. “Microstructure Design And Interfacial Effects On Thermoelectric Properties Of Bi-Sb-Te System.” 2017. Web. 18 Apr 2021.

Vancouver:

Femi OE. Microstructure Design And Interfacial Effects On Thermoelectric Properties Of Bi-Sb-Te System. [Internet] [Doctoral dissertation]. Indian Institute of Science; 2017. [cited 2021 Apr 18]. Available from: http://etd.iisc.ac.in/handle/2005/2655.

Council of Science Editors:

Femi OE. Microstructure Design And Interfacial Effects On Thermoelectric Properties Of Bi-Sb-Te System. [Doctoral Dissertation]. Indian Institute of Science; 2017. Available from: http://etd.iisc.ac.in/handle/2005/2655

Brno University of Technology

23. Halas, Miroslav. Možnosti využití termoelektrických měničů v elektroenergetice: Possibilities of Using Thermoelectric Converters in Power Industry.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/802

► This thesis deals with thermoelectric transformers and their application in electrical power engineering. First, a theoretical overview is shown within which major personalities of the… (more)

Subjects/Keywords: termoelektrický jav; termoelektrický menič; Peltierový článok; termoelektrický generátor; účinnosť termoelektrického meniča; Seebeckov koeficient; činiteľ akosti; odpadové teplo; thermoelectric effect; thermoelectric transformer; Peltier device; thermoelectric generator; efficiency of thermoelectric transformer; Seebeck coefficient; figure of merit; waste heat

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Halas, M. (2019). Možnosti využití termoelektrických měničů v elektroenergetice: Possibilities of Using Thermoelectric Converters in Power Industry. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/802

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Halas, Miroslav. “Možnosti využití termoelektrických měničů v elektroenergetice: Possibilities of Using Thermoelectric Converters in Power Industry.” 2019. Thesis, Brno University of Technology. Accessed April 18, 2021. http://hdl.handle.net/11012/802.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Halas, Miroslav. “Možnosti využití termoelektrických měničů v elektroenergetice: Possibilities of Using Thermoelectric Converters in Power Industry.” 2019. Web. 18 Apr 2021.

Vancouver:

Halas M. Možnosti využití termoelektrických měničů v elektroenergetice: Possibilities of Using Thermoelectric Converters in Power Industry. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Apr 18]. Available from: http://hdl.handle.net/11012/802.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Halas M. Možnosti využití termoelektrických měničů v elektroenergetice: Possibilities of Using Thermoelectric Converters in Power Industry. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/802

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Brno University of Technology

24. Třináctý, Jiří. Termoelektrický generátor pro spalinový tah kotle: Thermoelectric generator for flue-gas duct of boiler to convert low-temperature waste heat to electricity.

Degree: 2014, Brno University of Technology

URL: http://hdl.handle.net/11012/23915

► With the dwindling supply of fossil fuels is increasing interest in the most efficient use of primary energy sources. In many of today's devices leaving… (more)

Subjects/Keywords: Termoelektrický generátor; termoelektrický modul; Seebeckův jev; termoelektrické materiály; DC/DC měnič; elektřina; termoelektrické aplikace; odpadní teplo; Thermoelectric generator; thermoelectric module; Seebeck effect; thermoelectric materials; DC / DC converter; electricity; thermoelectric applications; waste heat

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APA (6^th Edition):

Třináctý, J. (2014). Termoelektrický generátor pro spalinový tah kotle: Thermoelectric generator for flue-gas duct of boiler to convert low-temperature waste heat to electricity. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/23915

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Třináctý, Jiří. “Termoelektrický generátor pro spalinový tah kotle: Thermoelectric generator for flue-gas duct of boiler to convert low-temperature waste heat to electricity.” 2014. Thesis, Brno University of Technology. Accessed April 18, 2021. http://hdl.handle.net/11012/23915.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Třináctý, Jiří. “Termoelektrický generátor pro spalinový tah kotle: Thermoelectric generator for flue-gas duct of boiler to convert low-temperature waste heat to electricity.” 2014. Web. 18 Apr 2021.

Vancouver:

Třináctý J. Termoelektrický generátor pro spalinový tah kotle: Thermoelectric generator for flue-gas duct of boiler to convert low-temperature waste heat to electricity. [Internet] [Thesis]. Brno University of Technology; 2014. [cited 2021 Apr 18]. Available from: http://hdl.handle.net/11012/23915.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Třináctý J. Termoelektrický generátor pro spalinový tah kotle: Thermoelectric generator for flue-gas duct of boiler to convert low-temperature waste heat to electricity. [Thesis]. Brno University of Technology; 2014. Available from: http://hdl.handle.net/11012/23915

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Brno University of Technology

25. Brázdil, Marian. Peltierovy články pro výrobu elektrické energie: Thermoelectric Power Generation System.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/1167

► In the last decade there is a rising interest in thermoelectric applications. Thermoelectric generators enabling the direct conversion of the heat into the electricity become… (more)

Subjects/Keywords: Peltierovy články; termoelektrické moduly; termobaterie; termoelektrický generátor; Seebeckův jev; Peltierův jev; termoelektrické jevy; odpadní teplo; DC/DC měnič; kogenerace; elektřina; Peltier Modules; Thermoelectric Modules; Thermopile; Thermoelectric Generator; Seebeck Effect; Peltier Effect; Thermoelectric Phenomena; Waste Heat; DC/DC Converter; Combined Heat and Power; Electric Power

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APA (6^th Edition):

Brázdil, M. (2019). Peltierovy články pro výrobu elektrické energie: Thermoelectric Power Generation System. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/1167

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Brázdil, Marian. “Peltierovy články pro výrobu elektrické energie: Thermoelectric Power Generation System.” 2019. Thesis, Brno University of Technology. Accessed April 18, 2021. http://hdl.handle.net/11012/1167.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Brázdil, Marian. “Peltierovy články pro výrobu elektrické energie: Thermoelectric Power Generation System.” 2019. Web. 18 Apr 2021.

Vancouver:

Brázdil M. Peltierovy články pro výrobu elektrické energie: Thermoelectric Power Generation System. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Apr 18]. Available from: http://hdl.handle.net/11012/1167.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Brázdil M. Peltierovy články pro výrobu elektrické energie: Thermoelectric Power Generation System. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/1167

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Brno University of Technology

26. Mejzlík, Michal. Návrh a tvorba laboratorní úlohy s Peltierovým článkem: Design and construction laboratory exercise with Peltier cell.

Degree: 2018, Brno University of Technology

URL: http://hdl.handle.net/11012/10930

► The introduction of this paper describes three thermoeletrical effects and their properties. It also deals with thermoelectrical cells, which are using Seebeck´s and Peltrier´s effects.… (more)

Subjects/Keywords: Termoelektrický jev; tepelný výkon; teplota; Seebeckův jev; Peltierův jev; termobaterie; Peltierův článek; chladič.; Thermoelectric effect; heat power; temperature; Seebeck effect; Peltier effect; thermobattery; Peltiere module; cooler.

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mejzlík, M. (2018). Návrh a tvorba laboratorní úlohy s Peltierovým článkem: Design and construction laboratory exercise with Peltier cell. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/10930

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mejzlík, Michal. “Návrh a tvorba laboratorní úlohy s Peltierovým článkem: Design and construction laboratory exercise with Peltier cell.” 2018. Thesis, Brno University of Technology. Accessed April 18, 2021. http://hdl.handle.net/11012/10930.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mejzlík, Michal. “Návrh a tvorba laboratorní úlohy s Peltierovým článkem: Design and construction laboratory exercise with Peltier cell.” 2018. Web. 18 Apr 2021.

Vancouver:

Mejzlík M. Návrh a tvorba laboratorní úlohy s Peltierovým článkem: Design and construction laboratory exercise with Peltier cell. [Internet] [Thesis]. Brno University of Technology; 2018. [cited 2021 Apr 18]. Available from: http://hdl.handle.net/11012/10930.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mejzlík M. Návrh a tvorba laboratorní úlohy s Peltierovým článkem: Design and construction laboratory exercise with Peltier cell. [Thesis]. Brno University of Technology; 2018. Available from: http://hdl.handle.net/11012/10930

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Southern California

27. Amer, Mohammed Reda. Electronic and optoelectronic devices based on quasi-metallic carbon nanotubes.

Degree: PhD, Electrical Engineering, 2014, University of Southern California

URL: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/461033/rec/2277

► Electronic devices have become the backbone of our daily life usage. In recent years, new types of electronics have emerged such as wearable electronics, flexible… (more)

▼ Electronic devices have become the backbone of our daily life usage. In recent years, new types of electronics have emerged such as wearable electronics, flexible electronics, and optoelectronics. In particular, the idea of converting light into electricity with high efficiency, by carefully engineering the device structure, has become an active area of research. In this thesis, carbon nanotube electronic and optoelectronic devices are investigated which are based on suspended quasi‐metallic carbon nanotubes. These quasi‐metallic nanotube electronics exhibit semi‐ballistic electron transport at room temperature, which gives them high sensitivity to gaseous environment. Once the nanotube is in contact with a substrate, the mini‐gap in their energy band structure diminishes due to fixed charges in the oxide. Moreover, quasi‐metallic carbon nanotube tunnel field‐effect‐transistors (TFETs) using an electrostatically tunable pn junction are engineered and studied. Although these devices do not show any diode behavior at room temperature, they show a finite photocurrent due to the existence of a space charge region. At cryogenic temperatures, these transistors show a tunable band‐to‐band (zener) tunneling with sub‐threshold swing ~1mV/decade. At room temperature, these devices can produce photocurrent upon light exposure. The mechanism underlying the generated photocurrent in these devices reveals two different mechanisms. Devices with small band gaps (Egap < 75meV) exhibit photothermoelectric effect, while devices with larger band gaps, photo‐induced electron hole separation by a built‐in electric field (photovoltaic effect) dominates the photocurrent transport. Upon photothermal heating of these devices at cryogenic temperatures, an oscillatory behavior occurs in the current‐voltage characteristics with a very low frequency of oscillation. This oscillatory behavior is found to be caused by opto‐mechanical action where the nanotube is thermally coupled to an optical cavity. Advisors/Committee Members: Cronin, Stephen B. (Committee Chair), Zhou, Chongwu (Committee Member), Wu, Wei (Committee Member).

Subjects/Keywords: carbon nanotube; metallic; semiconducting; pn junction; photocurrent; band gap energy; electron transport; thermoelectric transport; photothermoelectric effect; photovoltaic effect; photothermal oscillations; carbon nanotube resonator; carbon nanotube field‐effect transistor

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Amer, M. R. (2014). Electronic and optoelectronic devices based on quasi-metallic carbon nanotubes. (Doctoral Dissertation). University of Southern California. Retrieved from http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/461033/rec/2277

Chicago Manual of Style (16^th Edition):

Amer, Mohammed Reda. “Electronic and optoelectronic devices based on quasi-metallic carbon nanotubes.” 2014. Doctoral Dissertation, University of Southern California. Accessed April 18, 2021. http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/461033/rec/2277.

MLA Handbook (7^th Edition):

Amer, Mohammed Reda. “Electronic and optoelectronic devices based on quasi-metallic carbon nanotubes.” 2014. Web. 18 Apr 2021.

Vancouver:

Amer MR. Electronic and optoelectronic devices based on quasi-metallic carbon nanotubes. [Internet] [Doctoral dissertation]. University of Southern California; 2014. [cited 2021 Apr 18]. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/461033/rec/2277.

Council of Science Editors:

Amer MR. Electronic and optoelectronic devices based on quasi-metallic carbon nanotubes. [Doctoral Dissertation]. University of Southern California; 2014. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/461033/rec/2277

McMaster University

28. Esmaeili, Mehdi. SYNTHESIS AND INVESTIGATING THERMOELECTRIC CHARACTERISTICS OF THE RECuQ2 (RE= Pr, Sm, Gd, Dy, Er AND Q= Se, Te).

Degree: 2014, McMaster University

URL: http://hdl.handle.net/11375/16086

►

Results of this research are available online in two published papers.

The main focus of this research was to synthesize and then to characterize the… (more)

▼

Results of this research are available online in two published papers.

The main focus of this research was to synthesize and then to characterize the potential high-performance thermoelectric materials. In this regard, we have prepared a series of pure RECuSe2 (with RE = Pr, Sm, Gd, Dy and Er) and RECuTe2 (with RE = Er, Dy and Gd) and analyzed their crystal structure, electronic and physical properties. We used powder and single crystal X-ray diffraction techniques to analyze their crystal structures and employed energy dispersive X-ray spectrometry (EDS) to verify their chemical compositions. The temperature stability of the synthesized samples was examined by differential thermal and gravimetrical analysis. The high-purity consolidated pellets were prepared for physical properties measurements. We analyzed the relationship between their crystal structures and pertinent electronic properties through the LMTO calculations. The RECuSe2 phases adopt two structures, monoclinic and trigonal. The monoclinic structure (P21/c, z = 4) is observed for lighter rare earths (RE = Pr, Sm and Gd) and Cu-disordered trigonal structure for heavier rare earths (P m1, z = 1, RE = Dy and Er). The resistivity and Seebeck coefficient measurements indicate that the studied selenides are p-type semiconductors with relatively small activation energies (0.045-0.12 eV). However, their electrical resistivities are too high (0.49-220 Ohmcm at room temperature) to make them competitive thermoelectric materials. Electronic structure calculations indicate presence of a band gap in the RECuSe2 phases. The synthesized RECuTe2 phases (RE = Er, Dy and Gd) adopt a monoclinic-distorted variant (C2/m, z = 2) of the trigonal structure (P m1, Z= 1) observed for the RECuSe2 (with RE = Dy, Er). While such disorder may be beneficial for lowering their thermal conductivity, large values of electrical resistivity (0.02-0.87 Ohmcm at room temperature) make these phases unsuitable for practical applications. Comparing to the corresponding semiconducting selenides, the tellurides have lower resistivities, and display a metallic type resistivity. Such behavior stems from the closure of band gaps, which is verified by the electronic structures calculations. Structurally the RECuTe2 phases (with RE = Er, Dy and Gd) are similar to RECuSe2 with the P m1 structure. The monoclinic distortion in RECuTe2 is driven by Cu displacement inside the larger tetrahedral voids in the hexagonal close packing of the Te atoms. Most likely, Cu shifts to one side of the Te tetrahedra to optimize the Cu-Te interactions.

Thesis

Candidate in Philosophy

Advisors/Committee Members: Mozharivskyj, Yurij, Chemistry and Chemical Biology.

Subjects/Keywords: Thermoelectric- electrical conductivity- Seebeck Effect- Rare-Earth Copper Chalcogenide- electronic band structure- DTA- TGA- DOS- COHP

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Esmaeili, M. (2014). SYNTHESIS AND INVESTIGATING THERMOELECTRIC CHARACTERISTICS OF THE RECuQ2 (RE= Pr, Sm, Gd, Dy, Er AND Q= Se, Te). (Thesis). McMaster University. Retrieved from http://hdl.handle.net/11375/16086

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Esmaeili, Mehdi. “SYNTHESIS AND INVESTIGATING THERMOELECTRIC CHARACTERISTICS OF THE RECuQ2 (RE= Pr, Sm, Gd, Dy, Er AND Q= Se, Te).” 2014. Thesis, McMaster University. Accessed April 18, 2021. http://hdl.handle.net/11375/16086.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Esmaeili, Mehdi. “SYNTHESIS AND INVESTIGATING THERMOELECTRIC CHARACTERISTICS OF THE RECuQ2 (RE= Pr, Sm, Gd, Dy, Er AND Q= Se, Te).” 2014. Web. 18 Apr 2021.

Vancouver:

Esmaeili M. SYNTHESIS AND INVESTIGATING THERMOELECTRIC CHARACTERISTICS OF THE RECuQ2 (RE= Pr, Sm, Gd, Dy, Er AND Q= Se, Te). [Internet] [Thesis]. McMaster University; 2014. [cited 2021 Apr 18]. Available from: http://hdl.handle.net/11375/16086.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Esmaeili M. SYNTHESIS AND INVESTIGATING THERMOELECTRIC CHARACTERISTICS OF THE RECuQ2 (RE= Pr, Sm, Gd, Dy, Er AND Q= Se, Te). [Thesis]. McMaster University; 2014. Available from: http://hdl.handle.net/11375/16086

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Victoria University of Wellington

29. Wassilieff, Constantin. The Thermopower and Resistivity of Nearly Magnetic Dilute Alloys.

Degree: 1982, Victoria University of Wellington

URL: http://hdl.handle.net/10063/586

► In some nearly magnetic dilute alloys, in which the host and impurity are transition metals of similar electronic structure, the thermopower is observed to form… (more)

Subjects/Keywords: Thermoelectric effect; Cryostat; Thermoelectricity; Dilute alloys; Low temperatures

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wassilieff, C. (1982). The Thermopower and Resistivity of Nearly Magnetic Dilute Alloys. (Doctoral Dissertation). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/586

Chicago Manual of Style (16^th Edition):

Wassilieff, Constantin. “The Thermopower and Resistivity of Nearly Magnetic Dilute Alloys.” 1982. Doctoral Dissertation, Victoria University of Wellington. Accessed April 18, 2021. http://hdl.handle.net/10063/586.

MLA Handbook (7^th Edition):

Wassilieff, Constantin. “The Thermopower and Resistivity of Nearly Magnetic Dilute Alloys.” 1982. Web. 18 Apr 2021.

Vancouver:

Wassilieff C. The Thermopower and Resistivity of Nearly Magnetic Dilute Alloys. [Internet] [Doctoral dissertation]. Victoria University of Wellington; 1982. [cited 2021 Apr 18]. Available from: http://hdl.handle.net/10063/586.

Council of Science Editors:

Wassilieff C. The Thermopower and Resistivity of Nearly Magnetic Dilute Alloys. [Doctoral Dissertation]. Victoria University of Wellington; 1982. Available from: http://hdl.handle.net/10063/586

University of Lund

30. Svilans, Artis. Thermoelectric experiments on nanowire-based quantum dots.

Degree: 2018, University of Lund

URL: https://lup.lub.lu.se/record/cbe24b67-7ea1-4652-8067-ca3198672948 ; https://portal.research.lu.se/ws/files/51132151/A_Svilans_PhD_thesis.pdf

► This thesis experimentally investigates the possibilities of using quantum effects in semiconductor nanostructures for engineering their thermoelectric properties. More specifically, heterostructured InAs/InP nanowires are used… (more)

▼ This thesis experimentally investigates the possibilities of using quantum effects in semiconductor nanostructures for engineering their thermoelectric properties. More specifically, heterostructured InAs/InP nanowires are used to create short InAs quantum dots (QDs) with electronic state structure resembling that found in atoms. Recently developed top-heater architecture is used to apply a temperature differential across the QDs. The nanowire-based QD devices are used for studies of thermoelectric effects at the nanoscale and for experimental demonstration of particle-exchange heat engines.This thesis first gives an overview of the most important physical effects governing the behavior of quantum dots (QDs). The Master equation approach to model the electronic transport in QDs is introduced in the sequential electron tunneling approximation. It is used to illustrative the transport behavior of QDs. The Landauer-Büttiker approach is also introduced as a reference and the differences with the sequential electron tunneling approximation are discussed. A summary of the most important literature on the thermoelectric properties of single QDs is given and discussed to provide the context for the experimental studies in this thesis. Finally, a description of the experimental methods used in this thesis is given.There are three studies included in this thesis. The first investigates the nonlinear thermoelectric response of a QD with an applied thermal bias. A strongly nonlinear behavior is observed which can be fully explained by the interplay between different QD electronic states contributing to thermocurrent in opposing directions. The second study experimentally demonstrates efficient particle-exchange heat engines based on QDs for the first time. The analysis of the heat engines' power and efficiency indicate heat-to-electric conversion efficiencies up to 70% of Carnot efficiency. The third study investigates the thermoelectric response of QDs in the presence of Kondo correlations. It verifies a previous theoretical prediction that the sign of the thermoelectric signature in QDs inverts due to the Kondo correlations.The experiments presented in this thesis have been successful in filling a gap between theory and experiments on several fronts. Future experiments could, for example, study Kondo-correlated QDs in the nonlinear thermoelectric response regime in the presence of magnetic field, where theory predictions are harder to obtain, or could employ thermoelectric characterization techniques to study entropy of various different QD states.

Subjects/Keywords: Nano Technology; Quantum dots; Nanowire; Thermoelectric; Maximum power; Efficientcy; Carnot; Kondo effect; Fysicumarkivet A:2018:Svilans

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APA (6^th Edition):

Svilans, A. (2018). Thermoelectric experiments on nanowire-based quantum dots. (Doctoral Dissertation). University of Lund. Retrieved from https://lup.lub.lu.se/record/cbe24b67-7ea1-4652-8067-ca3198672948 ; https://portal.research.lu.se/ws/files/51132151/A_Svilans_PhD_thesis.pdf

Chicago Manual of Style (16^th Edition):

Svilans, Artis. “Thermoelectric experiments on nanowire-based quantum dots.” 2018. Doctoral Dissertation, University of Lund. Accessed April 18, 2021. https://lup.lub.lu.se/record/cbe24b67-7ea1-4652-8067-ca3198672948 ; https://portal.research.lu.se/ws/files/51132151/A_Svilans_PhD_thesis.pdf.

MLA Handbook (7^th Edition):

Svilans, Artis. “Thermoelectric experiments on nanowire-based quantum dots.” 2018. Web. 18 Apr 2021.

Vancouver:

Svilans A. Thermoelectric experiments on nanowire-based quantum dots. [Internet] [Doctoral dissertation]. University of Lund; 2018. [cited 2021 Apr 18]. Available from: https://lup.lub.lu.se/record/cbe24b67-7ea1-4652-8067-ca3198672948 ; https://portal.research.lu.se/ws/files/51132151/A_Svilans_PhD_thesis.pdf.

Council of Science Editors:

Svilans A. Thermoelectric experiments on nanowire-based quantum dots. [Doctoral Dissertation]. University of Lund; 2018. Available from: https://lup.lub.lu.se/record/cbe24b67-7ea1-4652-8067-ca3198672948 ; https://portal.research.lu.se/ws/files/51132151/A_Svilans_PhD_thesis.pdf

Open Access Theses and Dissertations