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You searched for subject:(graphene on copper). Showing records 1 – 3 of 3 total matches.

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Brno University of Technology

1. Procházka, Pavel. Příprava grafenu metodou CVD .

Degree: 2012, Brno University of Technology

Tato diplomová práce je převážně zaměřena na výrobu grafenových vrstev na měděné fólii metodou chemické depozice z plynné fáze (Chemical Vapour Deposition – CVD). Za tímto účelem byla dokončena a plně automatizována vysokoteplotní komora pro výrobu grafenu. Experimentálně bylo dosaženo výroby velkých ploch grafenu na měděné fólii. Provedené měření Ramanovým mikroskopem a rentgenovou fotoelektronovou spektroskopií dokázalo, že se jedná převážně o jednu vrstvu grafenu. Grafenová vrstva byla rovněž přenesena na nevodivý substrát.; This diploma thesis is mainly focused on the fabrication of graphene layers on the copper foil by the Chemical Vapor Deposition (CVD). For this purpose the high-temperature chamber for the production of the graphene was completed and fully automated. The production of the high area graphene on the copper foil was experimentally achieved. The Raman microscopy and X-ray photoelectron spectroscopy measurements proved that the produced graphene is mostly a monolayer. Graphene layer was transferred on non-conductive substrate. Advisors/Committee Members: Mach, Jindřich (advisor).

Subjects/Keywords: Chemická depozice z plynné fáze; CVD; grafen na měděné fólii; přenos grafenu; Ramanova spektroskopie; LabVIEW.; Chemical vapour deposition; CVD; graphene on copper foil; transfer of graphene; Raman spectroscopy; LabVIEW.

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

APA (6th Edition):

Procházka, P. (2012). Příprava grafenu metodou CVD . (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/9838

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

Chicago Manual of Style (16th Edition):

Procházka, Pavel. “Příprava grafenu metodou CVD .” 2012. Thesis, Brno University of Technology. Accessed September 17, 2019. http://hdl.handle.net/11012/9838.

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

MLA Handbook (7th Edition):

Procházka, Pavel. “Příprava grafenu metodou CVD .” 2012. Web. 17 Sep 2019.

Vancouver:

Procházka P. Příprava grafenu metodou CVD . [Internet] [Thesis]. Brno University of Technology; 2012. [cited 2019 Sep 17]. Available from: http://hdl.handle.net/11012/9838.

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

Council of Science Editors:

Procházka P. Příprava grafenu metodou CVD . [Thesis]. Brno University of Technology; 2012. Available from: http://hdl.handle.net/11012/9838

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

2. Do, Jae Won. Electrostatic transfer of graphene grown on copper foil and nanosoldering of carbon nanotube junctions.

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

This thesis presents novel techniques to enhance the key processing and device issues related to carbon nanoelectronics. Particularly, the presented techniques involve transferring graphene grown on copper foil using electrostatic force and improving the junction resistance of carbon nanotube (CNT) networks by nanosoldering. Typically, transferring graphene grown on metal substrates involves wet etching steps in order to separate graphene from its metal growth substrates. During these wet etching steps, however, residues and wrinkles can be easily introduced in graphene and degrade its quality. By using electrostatic force instead, we attempt to transfer graphene grown on copper foil without involving the wet etching steps, thereby simplifying the transfer technique and improving the quality of transferred graphene. In addition, we further study the interaction between graphene and the copper substrate. For nanosoldering of CNT networks, we propose a novel method to locally deposit metals at the junctions of CNTs in order to lower the junction resistance. As these junctions are the most-resistive regions, we are able to locally heat the junctions by passing currents through the CNT network. In the presence of metal precursors in a vacuum environment, we attempt to deposit metals locally and selectively at these junctions. Our results show that the metals indeed start to form locally at the inter-tube junctions, which indicates that the junctions are the spots of high thermal resistance. The effects of nanosoldering these junctions seem to vary according to the types of metals deposited at the junctions, and are subjects for further study. Advisors/Committee Members: Lyding, Joseph W. (advisor).

Subjects/Keywords: graphene; graphene transfer; electrostatics; graphene growth; graphene on copper; carbon nanotubes; nanosoldering; carbon nanotube junctions; carbon nanotube junction resistance; local chemical vapor deposition

…technique for electrostatic transfer of graphene grown on copper foils along with the background… …electrostatic transfer of graphene on copper foils and nanosoldering of CNT junctions. It will also… …ELECTROSTATIC TRANSFER OF GRAPHENE GROWN ON COPPER FOIL 2.1 Background on Graphene Transfer… …graphene grown on metal substrates, in particular singlelayer graphene on copper, has generated… …applications based on transferring the graphene grown on copper onto different substrates. However… 

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

APA (6th Edition):

Do, J. W. (2012). Electrostatic transfer of graphene grown on copper foil and nanosoldering of carbon nanotube junctions. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/29553

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

Chicago Manual of Style (16th Edition):

Do, Jae Won. “Electrostatic transfer of graphene grown on copper foil and nanosoldering of carbon nanotube junctions.” 2012. Thesis, University of Illinois – Urbana-Champaign. Accessed September 17, 2019. http://hdl.handle.net/2142/29553.

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

MLA Handbook (7th Edition):

Do, Jae Won. “Electrostatic transfer of graphene grown on copper foil and nanosoldering of carbon nanotube junctions.” 2012. Web. 17 Sep 2019.

Vancouver:

Do JW. Electrostatic transfer of graphene grown on copper foil and nanosoldering of carbon nanotube junctions. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2012. [cited 2019 Sep 17]. Available from: http://hdl.handle.net/2142/29553.

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

Council of Science Editors:

Do JW. Electrostatic transfer of graphene grown on copper foil and nanosoldering of carbon nanotube junctions. [Thesis]. University of Illinois – Urbana-Champaign; 2012. Available from: http://hdl.handle.net/2142/29553

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


University of Michigan

3. Pyper, Kayla J. Metal Oxide Semiconductor Materials for Photo-oxidation of Water and Organic Amine Groups.

Degree: PhD, Chemistry, 2015, University of Michigan

With environmental decline due to increasing carbon dioxide and pollution levels, sustainability and ecofriendly improvements are necessary to maintain quality of life. In order to move in this direction, new sources of energy must be identified and sustainable methods must be realized. The overarching themes of sustainable energy addressed in this thesis are developing clean fuel, advancing energy efficiency, and advancing clean energy. These themes lend toward removal of our current reliance on unclean sources like oil and coal, and useless nonrenewables, toxic substances, and chemical waste. The future energy source we chose to focus on is hydrogen by photoelectrochemical water splitting using metal oxide semiconductors and visible sunlight. To advance clean energy we have chosen to focus on a greener approach to organic oxidations, specifically amine oxidation, by use of a semiconductor metal oxide and visible sunlight. With a Z-scheme approach for water splitting the central material focused on this work is copper tungstate, an n-type visible- light absorbing semiconductor, for the water oxidation half reaction. An emphasis is also placed on the use of copper tungstate to provide sustainable pathways for organic amine oxidation reactions. Another n-type material from the tungstate family, alpha tin tungstate, was also synthesized and explored for sustainable water oxidation. Copper tungstate was evaluated for mechanistic insight into water oxidation under visible-light illumination using electrochemical impedance spectroscopy (EIS). A mid-gap energy state (rather than the valence band) was identified as the carrier source in the water oxidation reaction on the surface of polycrystalline sol-gel copper tungstate electrodes. This state is likely composed of Cu(3d) character. The best way to improve materials for water oxidation is to identify more in depth information on how the reaction takes place on the material surface. These EIS studies on copper tungstate have provided us with chemical information to improve the reactivity of copper tungstate. It has also expanded the scope to a subset of organic reactions potentially catalyzed by these Cu 2+ sites with orbital energies within the band gap. Copper tungstate performs benzylamine oxidation to benzylidenebenzylimine with 89% Faradic efficiency, which was confirmed by gas chromatography. Advisors/Committee Members: Bartlett, Bart (committee member), Millunchick, Joanna Mirecki (committee member), Banaszak Holl, Mark M. (committee member), Pecoraro, Vincent L. (committee member).

Subjects/Keywords: Photoelectrochemical water oxidation; Electrochemical impedance spectroscopy study on metal oxide for water oxidation; Photoelectrochemical water splitting; Copper tungstate (CuWO4); Alpha tin tungstate (SnWO4); Electrode construction with the use of graphene; Chemistry; Science

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

APA (6th Edition):

Pyper, K. J. (2015). Metal Oxide Semiconductor Materials for Photo-oxidation of Water and Organic Amine Groups. (Doctoral Dissertation). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/113412

Chicago Manual of Style (16th Edition):

Pyper, Kayla J. “Metal Oxide Semiconductor Materials for Photo-oxidation of Water and Organic Amine Groups.” 2015. Doctoral Dissertation, University of Michigan. Accessed September 17, 2019. http://hdl.handle.net/2027.42/113412.

MLA Handbook (7th Edition):

Pyper, Kayla J. “Metal Oxide Semiconductor Materials for Photo-oxidation of Water and Organic Amine Groups.” 2015. Web. 17 Sep 2019.

Vancouver:

Pyper KJ. Metal Oxide Semiconductor Materials for Photo-oxidation of Water and Organic Amine Groups. [Internet] [Doctoral dissertation]. University of Michigan; 2015. [cited 2019 Sep 17]. Available from: http://hdl.handle.net/2027.42/113412.

Council of Science Editors:

Pyper KJ. Metal Oxide Semiconductor Materials for Photo-oxidation of Water and Organic Amine Groups. [Doctoral Dissertation]. University of Michigan; 2015. Available from: http://hdl.handle.net/2027.42/113412

.