subject:(Metasurface)

Penn State University

1. Yue, Taiwei. ADVANCED COMPACT, LOW PROFILE ANTENNA DESIGNS FOR MODERN COMMUNICATION SYSTEMS.

Degree: 2018, Penn State University

URL: https://etda.libraries.psu.edu/catalog/15459txy143

► In this dissertation, the design, analysis, and demonstration of multiple advanced compact and low-profile antennas with enhanced functionalities are presented with operational frequency bands ranging… (more)

▼ In this dissertation, the design, analysis, and demonstration of multiple advanced compact and low-profile antennas with enhanced functionalities are presented with operational frequency bands ranging from microwave frequencies to the terahertz regime. Basic background knowledge is reviewed first in Chapter 1. In Chapter 2, three single-band antennas with compact sizes operating in the 4.0 GHz band are proposed. Specifically, the first two designs are linearly-polarized (LP) antennas with fractional bandwidths of more than 10% and unidirectional radiation patterns. The third design in Chapter 2 is a circularly-polarized (CP) antenna with an operational bandwidth exceeding 9% and a unidirectional radiation pattern. In Chapter 3, the design methodology of a dual-band antenna is introduced. The proposed LP antenna functions at both the 1.9 and 2.5 GHz frequency bands with unidirectional radiating characteristics. An ultra-compact footprint is achieved by the proposed antenna by virtue of rectangular complementary split ring resonator (CSRR) loadings, which also contributes to the dual-band functionality. In Chapter 4, a dual-band dual-sense CP antenna that operates at 1.9 and 2.5 GHz is proposed. The bi-anisotropic characteristic of the circular CSRR resonators is utilized in antenna engineering for the first time to realize the dual-band dual-sense CP radiation at broadside. Moreover, the size of the antenna is smaller than most of its counterparts reported in the literature. In Chapter 5, a highly miniaturized wideband wearable antenna with filtering characteristics is proposed for the 2.4 GHz industry, scientific, and medical (ISM) band based on the substrate-integrated-waveguide (SIW) technology. More importantly, the SIW structure is based on Eutectic Gallium-Indium (EGaIn) liquid metal and a flexible Styrene Ethylene Butylene Styrene (SEBS) polymer. This represents the first application of these flexible materials in antenna engineering. In Chapter 6, compact optical nanoantennas, referred to as surface plasma (SP) wave generators in this dissertation, are introduced to realize the generation of reconfigurable directional SP waves. In summary, these antennas with miniaturized volumes and advanced functionalities are promising candidates for integration into various modern communication systems. Advisors/Committee Members: Douglas Henry Werner, Dissertation Advisor.

Subjects/Keywords: Antenna; Metasurface

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APA (6^th Edition):

Yue, T. (2018). ADVANCED COMPACT, LOW PROFILE ANTENNA DESIGNS FOR MODERN COMMUNICATION SYSTEMS. (Thesis). Penn State University. Retrieved from https://etda.libraries.psu.edu/catalog/15459txy143

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):

Yue, Taiwei. “ADVANCED COMPACT, LOW PROFILE ANTENNA DESIGNS FOR MODERN COMMUNICATION SYSTEMS.” 2018. Thesis, Penn State University. Accessed October 23, 2019. https://etda.libraries.psu.edu/catalog/15459txy143.

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

MLA Handbook (7^th Edition):

Yue, Taiwei. “ADVANCED COMPACT, LOW PROFILE ANTENNA DESIGNS FOR MODERN COMMUNICATION SYSTEMS.” 2018. Web. 23 Oct 2019.

Vancouver:

Yue T. ADVANCED COMPACT, LOW PROFILE ANTENNA DESIGNS FOR MODERN COMMUNICATION SYSTEMS. [Internet] [Thesis]. Penn State University; 2018. [cited 2019 Oct 23]. Available from: https://etda.libraries.psu.edu/catalog/15459txy143.

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

Council of Science Editors:

Yue T. ADVANCED COMPACT, LOW PROFILE ANTENNA DESIGNS FOR MODERN COMMUNICATION SYSTEMS. [Thesis]. Penn State University; 2018. Available from: https://etda.libraries.psu.edu/catalog/15459txy143

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

Tulane University

2. LIN,SHUAI. PLASMON AND METASURFACE MEDIATED TERAHERTZ OPTICAL PHENOMENA.

Degree: 2019, Tulane University

URL: https://digitallibrary.tulane.edu/islandora/object/tulane:94849

►

[email protected]

In the past decades, the terahertz science and technology have been extensively studied due to their potential applications in fundamental physics, material characterization, communication,… (more)

▼

[email protected]

In the past decades, the terahertz science and technology have been extensively studied due to their potential applications in fundamental physics, material characterization, communication, sensing and imaging. Although a lot terahertz optical devices have been proposed recently, but efficient, high-performance terahertz optical devices are still in great demand. With the development of plasmonic research and nano-/micro- fabrication techniques, plasmon and metasurface based terahertz optical devices demonstrate their capacity to fit these needs. It is crucial to learn the plasmon and metasurface mediated terahertz optical phenomena for designing such terahertz optical devices. This thesis will explore several plasmon and metasurface mediated terahertz optical phenomena and propose possible solutions for the design of terahertz optical devices. The plasmonic resonant responses of sub-wavelength metallic and dielectric gratings on Indium Antimonide (InSb) are first studied. The designed sub-wavelength metasurface structures are able to couple normal incident terahertz wave with the surface standing plasmon modes whose propagation constant is controlled by the period of the structure. The excited resonant mode on the metallic grating structure is sensitive to its ambient environment which could be potentially applied in molecular sensing. The high-refractive index dielectric grating on InSb wafer enables us to intentionally tune the plasmonic response of the structure which offers more flexibility for terahertz devices. The non-reciprocal reflection and reciprocal transmission of InSb wafer under weak external magnetic field is reported then. The surface plasmon theory of this non-reciprocal reflection and reciprocal transmission is reviewed and confirmed by the experiments. A high-performance THz optical isolator is then proposed based on this non-reciprocal reflection. A novel experiments setup to measure the quadratic terahertz nonlinearities using second-harmonic lock-in detection is proposed. The experimental method is demonstrated by measuring the THz Kerr effect on (110) Gallium Phosphide (GaP) crystal. The experimental design is extended to measure the second-harmonic generation of non-centrosymmetric media. We also design a split-ring-resonator (SRR) metasurface to enhance the second-harmonic generation from non-centrosymmetric media.

1

SHUAI LIN

Advisors/Committee Members: TALBAYEV,DIYAR (Thesis advisor), School of Science & Engineering Physics and Engineering Physics (Degree granting institution).

Subjects/Keywords: Terahertz; Metasurface; Optics

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APA (6^th Edition):

LIN,SHUAI. (2019). PLASMON AND METASURFACE MEDIATED TERAHERTZ OPTICAL PHENOMENA. (Thesis). Tulane University. Retrieved from https://digitallibrary.tulane.edu/islandora/object/tulane:94849

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

Chicago Manual of Style (16^th Edition):

LIN,SHUAI. “PLASMON AND METASURFACE MEDIATED TERAHERTZ OPTICAL PHENOMENA.” 2019. Thesis, Tulane University. Accessed October 23, 2019. https://digitallibrary.tulane.edu/islandora/object/tulane:94849.

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

MLA Handbook (7^th Edition):

LIN,SHUAI. “PLASMON AND METASURFACE MEDIATED TERAHERTZ OPTICAL PHENOMENA.” 2019. Web. 23 Oct 2019.

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

Vancouver:

LIN,SHUAI. PLASMON AND METASURFACE MEDIATED TERAHERTZ OPTICAL PHENOMENA. [Internet] [Thesis]. Tulane University; 2019. [cited 2019 Oct 23]. Available from: https://digitallibrary.tulane.edu/islandora/object/tulane:94849.

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

Council of Science Editors:

LIN,SHUAI. PLASMON AND METASURFACE MEDIATED TERAHERTZ OPTICAL PHENOMENA. [Thesis]. Tulane University; 2019. Available from: https://digitallibrary.tulane.edu/islandora/object/tulane:94849

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

University of Washington

3. Colburn, Shane. Dielectric Metasurface Optics: A New Platform for Compact Optical Sensing.

Degree: 2017, University of Washington

URL: http://hdl.handle.net/1773/40037

► Metasurfaces, the 2D analogue of bulk metamaterials, show incredible promise for achieving nanoscale optical components that could support the growing infrastructure for the Internet of… (more)

Subjects/Keywords: Achromatic metasurface; Metasurface; Polarization control; Tunable metasurface; Electrical engineering; Optics; Electrical engineering

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APA (6^th Edition):

Colburn, S. (2017). Dielectric Metasurface Optics: A New Platform for Compact Optical Sensing. (Thesis). University of Washington. Retrieved from http://hdl.handle.net/1773/40037

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):

Colburn, Shane. “Dielectric Metasurface Optics: A New Platform for Compact Optical Sensing.” 2017. Thesis, University of Washington. Accessed October 23, 2019. http://hdl.handle.net/1773/40037.

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

MLA Handbook (7^th Edition):

Colburn, Shane. “Dielectric Metasurface Optics: A New Platform for Compact Optical Sensing.” 2017. Web. 23 Oct 2019.

Vancouver:

Colburn S. Dielectric Metasurface Optics: A New Platform for Compact Optical Sensing. [Internet] [Thesis]. University of Washington; 2017. [cited 2019 Oct 23]. Available from: http://hdl.handle.net/1773/40037.

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

Council of Science Editors:

Colburn S. Dielectric Metasurface Optics: A New Platform for Compact Optical Sensing. [Thesis]. University of Washington; 2017. Available from: http://hdl.handle.net/1773/40037

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

University of Arizona

4. Ozdemir, Aytekin. High Efficient Ultra-Thin Flat Optics Based on Dielectric Metasurfaces .

Degree: 2018, University of Arizona

URL: http://hdl.handle.net/10150/626664

► Metasurfaces which emerged as two-dimensional counterparts of metamaterials, facilitate the realization of arbitrary phase distributions using large arrays with subwavelength and ultra-thin features. Even if… (more)

▼ Metasurfaces which emerged as two-dimensional counterparts of metamaterials, facilitate the realization of arbitrary phase distributions using large arrays with subwavelength and ultra-thin features. Even if metasurfaces are ultra-thin, they still effectively manipulate the phase, amplitude, and polarization of light in transmission or reflection mode. In contrast, conventional optical components are bulky, and they lose their functionality at sub-wavelength scales, which requires conceptually new types of nanoscale optical devices. On the other hand, as the optical systems shrink in size day by day, conventional bulky optical components will have tighter alignment and fabrication tolerances. Since metasurfaces can be fabricated lithographically, alignment can be done during lithographic fabrication, thus eliminating the need for post-fabrication alignments. In this work, various types of metasurface applications are thoroughly investigated for robust wavefront engineering with enhanced characteristics in terms of broad bandwidth, high efficiency and active tunability, while beneficial for application. Plasmonic metasurfaces are not compatible with the CMOS process flow, and, additionally their high absorption and ohmic loss is problematic in transmission based applications. Dielectric metasurfaces, however, offer a strong magnetic response at optical frequencies, and thus they can offer great opportunities for interacting not only with the electric component of a light field, but also with its magnetic component. They show great potential to enable practical device functionalities at optical frequencies, which motivates us to explore them one step further on wavefront engineering and imaging sensor platforms. Therefore, we proposed an efficient ultra-thin flat metalens at near-infrared regime constituted by silicon nanodisks which can support both electric and magnetic dipolar Mie-type resonances. These two dipole resonances can be overlapped at the same frequency by varying the geometric parameters of silicon nanodisks. Having two resonance mechanisms at the same frequency allows us to achieve full (0-2π) phase shift on the transmitted beam. To enable the miniaturization of pixel size for achieving high-resolution, planar, compact-size focal plane arrays (FPAs), we also present and explore the metasurface lens array-based FPAs. The investigated dielectric metasurface lens arrays achieved high focusing efficiency with superior optical crosstalk performance. We see a magnificent application prospect for metasurfaces in enhancing the fill factor and reducing the pixel size of FPAs and CCD, CMOS imaging sensors as well. Moreover, it is of paramount importance to design metasurfaces possessing tunable properties. Thus, we also propose a tunable beam steering device by combining phase manipulating metasurfaces concept and liquid crystals. Tunability feature is implemented by nematic liquid crystals infiltrated into nano holes in SiO2. Using electrically tunable nematic liquid crystals, dynamic beam steering is achieved Advisors/Committee Members: Takashima, Yuzuru (advisor), Takashima, Yuzuru (committeemember), Kurt, Hamza (committeemember), Schwiegerling, James (committeemember).

Subjects/Keywords: all-dielectric metasurface; cmos; metalenses; metasurface lens array; metasurfaces

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

APA (6^th Edition):

Ozdemir, A. (2018). High Efficient Ultra-Thin Flat Optics Based on Dielectric Metasurfaces . (Doctoral Dissertation). University of Arizona. Retrieved from http://hdl.handle.net/10150/626664

Chicago Manual of Style (16^th Edition):

Ozdemir, Aytekin. “High Efficient Ultra-Thin Flat Optics Based on Dielectric Metasurfaces .” 2018. Doctoral Dissertation, University of Arizona. Accessed October 23, 2019. http://hdl.handle.net/10150/626664.

MLA Handbook (7^th Edition):

Ozdemir, Aytekin. “High Efficient Ultra-Thin Flat Optics Based on Dielectric Metasurfaces .” 2018. Web. 23 Oct 2019.

Vancouver:

Ozdemir A. High Efficient Ultra-Thin Flat Optics Based on Dielectric Metasurfaces . [Internet] [Doctoral dissertation]. University of Arizona; 2018. [cited 2019 Oct 23]. Available from: http://hdl.handle.net/10150/626664.

Council of Science Editors:

Ozdemir A. High Efficient Ultra-Thin Flat Optics Based on Dielectric Metasurfaces . [Doctoral Dissertation]. University of Arizona; 2018. Available from: http://hdl.handle.net/10150/626664

University of Exeter

5. Tremain, Benjamin James. The microwave response of metasurfaces.

Degree: PhD, 2016, University of Exeter

URL: http://hdl.handle.net/10871/24304

► The aim of this thesis is to investigate surface waves supported on a variety of metallic metasurfaces at microwave frequencies. The goal is to characterise… (more)

Subjects/Keywords: 537; Metasurface; electromagnetism; metamaterials; surface waves

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APA (6^th Edition):

Tremain, B. J. (2016). The microwave response of metasurfaces. (Doctoral Dissertation). University of Exeter. Retrieved from http://hdl.handle.net/10871/24304

Chicago Manual of Style (16^th Edition):

Tremain, Benjamin James. “The microwave response of metasurfaces.” 2016. Doctoral Dissertation, University of Exeter. Accessed October 23, 2019. http://hdl.handle.net/10871/24304.

MLA Handbook (7^th Edition):

Tremain, Benjamin James. “The microwave response of metasurfaces.” 2016. Web. 23 Oct 2019.

Vancouver:

Tremain BJ. The microwave response of metasurfaces. [Internet] [Doctoral dissertation]. University of Exeter; 2016. [cited 2019 Oct 23]. Available from: http://hdl.handle.net/10871/24304.

Council of Science Editors:

Tremain BJ. The microwave response of metasurfaces. [Doctoral Dissertation]. University of Exeter; 2016. Available from: http://hdl.handle.net/10871/24304

University of California – San Diego

6. Kim, Sung Woon. Engineering of highly efficient metasurfaces for flat optics.

Degree: Materials Sci and Engineering, 2016, University of California – San Diego

URL: http://www.escholarship.org/uc/item/888105k5

► Conventional optical components, such as lenses, mirrors, waveplates and polarizers, have been widely developed and used in many electronic and optical devices. Because these components… (more)

▼ Conventional optical components, such as lenses, mirrors, waveplates and polarizers, have been widely developed and used in many electronic and optical devices. Because these components are bulky, they are not suitable for miniaturization and integration. In recent years, metasurfaces have emerged as a platform to realize the transformation of the field of optical devices as they have the potential to revolutionize the way light is controlled on a chip.Metallic nanostructures are intrinsically lossy in the optical spectral region due to the absorption in metals. In addition, the design parameters of metasurfaces have limitations for controlling the optical phase-front in the full range of 0 to 2π. These restrictions lead to the introduction of several undesirable losses, including reflection, diffraction, and polarization conversion. Compared to metallic nanostructures, dielectric metasurfaces have several significant advantages such as high transmission efficiency because they do not suffer from the intrinsic nonradiative losses in metals. All-dielectric metasurfaces can allow a diverse range of practical efficient wave-shaping applications of novel materials. In this dissertation, we report on the experimental study of the anomalous transmission effect in ultrathin metallic gratings, where the metal thickness is much thinner than the skin depth. In particular, incident TM polarized waves are reflected while incident TE polarized waves are transmitted. The anomalous transmission strongly depends on the metal width, thickness and refractive indices of the surrounding dielectric material. We systematically investigate and demonstrate the anomalous effect and determine the optimized nanostrip thickness and width by introducing a shadow-mask fabrication approach. The combined effect of thickness and width is experimentally investigated, and shown to match well with theoretical analysis. The main advantage of our ultrathin metal gratings lies in insertion loss reduction by utilizing the ultrathin metallic film fabrication. This advantage makes our structure readily suitable for a variety of applications including high efficiency metasurfaces, polarization steering, and polarization dependent spectral filter applications.Also, we explore the design, fabrication, and characterization of dielectric metasurface lens created by varying the density of subwavelength low refractive index nanoholes in a high refractive index substrate, resulting in a locally variable effective refraction index. It is demonstrated that constructed graded index lenses can overcome diffraction effects when the aperture to wavelength ratio (D/λ) is smaller than 40. Our design parameters for engineering the effective refractive index of a composite dielectric are created by controlling the density of deeply subwavelength low index nanoholes in a high index dielectric layer (e.g., Si). The phase of the optical wavefront incident on such a composite dielectric is modulated by the local effective index of the layer. We have demonstrated that the…

Subjects/Keywords: Optics; Dielectric metasurface lens; Ultrathin metallic grating

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APA (6^th Edition):

Kim, S. W. (2016). Engineering of highly efficient metasurfaces for flat optics. (Thesis). University of California – San Diego. Retrieved from http://www.escholarship.org/uc/item/888105k5

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):

Kim, Sung Woon. “Engineering of highly efficient metasurfaces for flat optics.” 2016. Thesis, University of California – San Diego. Accessed October 23, 2019. http://www.escholarship.org/uc/item/888105k5.

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

MLA Handbook (7^th Edition):

Kim, Sung Woon. “Engineering of highly efficient metasurfaces for flat optics.” 2016. Web. 23 Oct 2019.

Vancouver:

Kim SW. Engineering of highly efficient metasurfaces for flat optics. [Internet] [Thesis]. University of California – San Diego; 2016. [cited 2019 Oct 23]. Available from: http://www.escholarship.org/uc/item/888105k5.

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

Council of Science Editors:

Kim SW. Engineering of highly efficient metasurfaces for flat optics. [Thesis]. University of California – San Diego; 2016. Available from: http://www.escholarship.org/uc/item/888105k5

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

UCLA

7. Tao, Cheng. Non-periodic Metasurfaces for Blazing and Metasurface Assisted Leaky Waveguide.

Degree: Electrical Engineering, 2017, UCLA

URL: http://www.escholarship.org/uc/item/7831v4w2

► In the first part of this thesis, non-periodic metasurfaces are explored to realize blazing effects under oblique plane-wave illumination. Genetic Algorithm is used to optimize… (more)

Subjects/Keywords: Electrical engineering; blazing; metasurface; non-periodic; waveguide

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APA (6^th Edition):

Tao, C. (2017). Non-periodic Metasurfaces for Blazing and Metasurface Assisted Leaky Waveguide. (Thesis). UCLA. Retrieved from http://www.escholarship.org/uc/item/7831v4w2

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):

Tao, Cheng. “Non-periodic Metasurfaces for Blazing and Metasurface Assisted Leaky Waveguide.” 2017. Thesis, UCLA. Accessed October 23, 2019. http://www.escholarship.org/uc/item/7831v4w2.

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

MLA Handbook (7^th Edition):

Tao, Cheng. “Non-periodic Metasurfaces for Blazing and Metasurface Assisted Leaky Waveguide.” 2017. Web. 23 Oct 2019.

Vancouver:

Tao C. Non-periodic Metasurfaces for Blazing and Metasurface Assisted Leaky Waveguide. [Internet] [Thesis]. UCLA; 2017. [cited 2019 Oct 23]. Available from: http://www.escholarship.org/uc/item/7831v4w2.

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

Council of Science Editors:

Tao C. Non-periodic Metasurfaces for Blazing and Metasurface Assisted Leaky Waveguide. [Thesis]. UCLA; 2017. Available from: http://www.escholarship.org/uc/item/7831v4w2

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

University of Toronto

8. Wong, Joseph Pek Siang. Design of Huygens' Metasurfaces for Refraction and Focusing.

Degree: 2015, University of Toronto

URL: http://hdl.handle.net/1807/69180

►

The systematic design of unit cells for Huygens' metasurfaces is presented here. The Huygens' metasurface implements collocated electromagnetic boundary conditions enforcing the electric and magnetic… (more)

Subjects/Keywords: Huygens' source; Metasurface; Transmission line; transmitarray; 0607

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APA (6^th Edition):

Wong, J. P. S. (2015). Design of Huygens' Metasurfaces for Refraction and Focusing. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/69180

Chicago Manual of Style (16^th Edition):

Wong, Joseph Pek Siang. “Design of Huygens' Metasurfaces for Refraction and Focusing.” 2015. Masters Thesis, University of Toronto. Accessed October 23, 2019. http://hdl.handle.net/1807/69180.

MLA Handbook (7^th Edition):

Wong, Joseph Pek Siang. “Design of Huygens' Metasurfaces for Refraction and Focusing.” 2015. Web. 23 Oct 2019.

Vancouver:

Wong JPS. Design of Huygens' Metasurfaces for Refraction and Focusing. [Internet] [Masters thesis]. University of Toronto; 2015. [cited 2019 Oct 23]. Available from: http://hdl.handle.net/1807/69180.

Council of Science Editors:

Wong JPS. Design of Huygens' Metasurfaces for Refraction and Focusing. [Masters Thesis]. University of Toronto; 2015. Available from: http://hdl.handle.net/1807/69180

University of Toronto

9. Christian, Philip. Retroreflective Binary Huygens' Metasurface.

Degree: 2018, University of Toronto

URL: http://hdl.handle.net/1807/95626

►

This thesis discusses the ability to aggressively discretize a periodic surface to retroreflect an incident wave. The novelty of this work is related to the… (more)

Subjects/Keywords: Diffraction; Electromagnetics; Huygens; Metasurface; Reflection; Retroreflection; 0607

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APA (6^th Edition):

Christian, P. (2018). Retroreflective Binary Huygens' Metasurface. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/95626

Chicago Manual of Style (16^th Edition):

Christian, Philip. “Retroreflective Binary Huygens' Metasurface.” 2018. Masters Thesis, University of Toronto. Accessed October 23, 2019. http://hdl.handle.net/1807/95626.

MLA Handbook (7^th Edition):

Christian, Philip. “Retroreflective Binary Huygens' Metasurface.” 2018. Web. 23 Oct 2019.

Vancouver:

Christian P. Retroreflective Binary Huygens' Metasurface. [Internet] [Masters thesis]. University of Toronto; 2018. [cited 2019 Oct 23]. Available from: http://hdl.handle.net/1807/95626.

Council of Science Editors:

Christian P. Retroreflective Binary Huygens' Metasurface. [Masters Thesis]. University of Toronto; 2018. Available from: http://hdl.handle.net/1807/95626

University of California – San Diego

10. Brown, Eric Raymer. Highly Uniform Colloidal Metasurfaces for the Photoluminescent Enhancement of Quantum Dot Active Layers.

Degree: NanoEngineering, 2016, University of California – San Diego

URL: http://www.escholarship.org/uc/item/592887dq

► Colloidal metasurfaces are two-dimensional arrays of subwavelength resonators generally composed of a precious metal substrate and a deposited layer of colloidal metal nanoparticles, ultimately yielding… (more)

Subjects/Keywords: Nanotechnology; Nanoscience; Materials Science; Colloidal Metasurface; Enhancement; Metasurface; Plasmon; Quantum Dot; Silver Nanocube

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APA (6^th Edition):

Brown, E. R. (2016). Highly Uniform Colloidal Metasurfaces for the Photoluminescent Enhancement of Quantum Dot Active Layers. (Thesis). University of California – San Diego. Retrieved from http://www.escholarship.org/uc/item/592887dq

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):

Brown, Eric Raymer. “Highly Uniform Colloidal Metasurfaces for the Photoluminescent Enhancement of Quantum Dot Active Layers.” 2016. Thesis, University of California – San Diego. Accessed October 23, 2019. http://www.escholarship.org/uc/item/592887dq.

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

MLA Handbook (7^th Edition):

Brown, Eric Raymer. “Highly Uniform Colloidal Metasurfaces for the Photoluminescent Enhancement of Quantum Dot Active Layers.” 2016. Web. 23 Oct 2019.

Vancouver:

Brown ER. Highly Uniform Colloidal Metasurfaces for the Photoluminescent Enhancement of Quantum Dot Active Layers. [Internet] [Thesis]. University of California – San Diego; 2016. [cited 2019 Oct 23]. Available from: http://www.escholarship.org/uc/item/592887dq.

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

Council of Science Editors:

Brown ER. Highly Uniform Colloidal Metasurfaces for the Photoluminescent Enhancement of Quantum Dot Active Layers. [Thesis]. University of California – San Diego; 2016. Available from: http://www.escholarship.org/uc/item/592887dq

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

University of California – Irvine

11. Veysi, Mehdi. Electromagnetic Wavefront Manipulation with Metasurfaces.

Degree: Electrical and Computer Engineering, 2017, University of California – Irvine

URL: http://www.escholarship.org/uc/item/0cq6c0f7

► Conventional optical devices such as lenses with aberration correction, quarter-wave plate made of birefringent and chiral materials, spatial light modulators, and spiral phase-plates may meet… (more)

▼ Conventional optical devices such as lenses with aberration correction, quarter-wave plate made of birefringent and chiral materials, spatial light modulators, and spiral phase-plates may meet the performance demand in both bandwidth and efficiency, but they are usually bulky, and difficult to integrate in nanophotonic systems. Nevertheless, the market constantly demands cheaper and thinner devices with better performance. In the last few years with the availability of nanoscale fabrication tools, plasmonic metasurfaces with subwavelength unit cells have attracted increasing attention in optics and photonics due to their capability to manipulate beams’ wavefront over a subwavelength distance. Metasurfaces can introduce vast flexibility in the design of optical devices by tailoring the polarization state and wavefront of the beams. The manipulation of the light beams can be realized with resonant elements, which provide phase change discontinuities as the light travels across the metasurface (i.e., structured surface). The possibility of creating abrupt phase changes at optical/infrared frequencies can eliminate the need for propagation path compensation in lensing, or reduce the physical dimensions required for a quarter-wave plate or a phase-plate, because the tailoring of the beam is achieved by resonant printed elements on a metasurface with an extremely subwavelength thickness. Probably even more importantly such abrupt phase changes recently enabled the generation of complex optical beams with orbital angular momentum a reality. Such beam characteristics are desired in many applications such as free space communications, remote sensing, multi-mode communication systems and secure communications. This dissertation focuses on flat thin metasurfaces for wavefront engineering. We demonstrate the exotic capability of the metasurface in local phase, amplitude and polarization control of the electromagnetic waves along the surface populated with resonant antennas. A new class of flat, compact, multifunctional components, so-called polarizing lens, is introduced in an attempt to merge two important optical components, a circular polarizer and a lens, into a thin plasmonic metasurface. The concept of polarizing lens is then further extended to the investigation and development of multi-focus lenses and lenses with extended depth of focus. Another exotic application of metasurfaces is transforming incident beams into complex beams such as vector beams with non-uniform local polarization distributions. In particular, we focus on realizing azimuthally polarized beams which contain a magnetic dominant region within which longitudinal magnetic field is strong and electric field is ideally null. Such beams are promising for studying weak magnetic transitions in optical frequency range. Lastly, the exotic properties of the orbital angular momentum carrying beams, such as annular-shaped intensity profile and helical wavefront, motivated us to generate such beams in radio frequencies. We demonstrate that reflectarrays are an…

Subjects/Keywords: Electromagnetics; Electrical engineering; Metasurface Lens; Metasurface Polarizers; Metasurfaces; Orbital Angular Momentum Beams; Reflectarrays

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APA (6^th Edition):

Veysi, M. (2017). Electromagnetic Wavefront Manipulation with Metasurfaces. (Thesis). University of California – Irvine. Retrieved from http://www.escholarship.org/uc/item/0cq6c0f7

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):

Veysi, Mehdi. “Electromagnetic Wavefront Manipulation with Metasurfaces.” 2017. Thesis, University of California – Irvine. Accessed October 23, 2019. http://www.escholarship.org/uc/item/0cq6c0f7.

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

MLA Handbook (7^th Edition):

Veysi, Mehdi. “Electromagnetic Wavefront Manipulation with Metasurfaces.” 2017. Web. 23 Oct 2019.

Vancouver:

Veysi M. Electromagnetic Wavefront Manipulation with Metasurfaces. [Internet] [Thesis]. University of California – Irvine; 2017. [cited 2019 Oct 23]. Available from: http://www.escholarship.org/uc/item/0cq6c0f7.

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

Council of Science Editors:

Veysi M. Electromagnetic Wavefront Manipulation with Metasurfaces. [Thesis]. University of California – Irvine; 2017. Available from: http://www.escholarship.org/uc/item/0cq6c0f7

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

University of Washington

12. Hong, Chuchuan. Meta-form near eye visor.

Degree: 2017, University of Washington

URL: http://hdl.handle.net/1773/40054

► This thesis is about meta-form near-eye visor (NEV). Near eye visor is the core component in a head mounted display (HMD), because it directly decides… (more)

Subjects/Keywords: metasurface; near eye display; Electrical engineering; Electrical engineering

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APA (6^th Edition):

Hong, C. (2017). Meta-form near eye visor. (Thesis). University of Washington. Retrieved from http://hdl.handle.net/1773/40054

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):

Hong, Chuchuan. “Meta-form near eye visor.” 2017. Thesis, University of Washington. Accessed October 23, 2019. http://hdl.handle.net/1773/40054.

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

MLA Handbook (7^th Edition):

Hong, Chuchuan. “Meta-form near eye visor.” 2017. Web. 23 Oct 2019.

Vancouver:

Hong C. Meta-form near eye visor. [Internet] [Thesis]. University of Washington; 2017. [cited 2019 Oct 23]. Available from: http://hdl.handle.net/1773/40054.

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

Council of Science Editors:

Hong C. Meta-form near eye visor. [Thesis]. University of Washington; 2017. Available from: http://hdl.handle.net/1773/40054

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

University of California – San Diego

13. Li, Aobo. Active Metasurfaces and Their Applications.

Degree: Electrical and Computer Engineering, 2018, University of California – San Diego

URL: http://www.escholarship.org/uc/item/90w0c0dk

► Metasurfaces are sub-wavelength scale (lambda<1/4), two dimensional (2D) periodic structures being widely studied due to their unique ability to manipulate electromagnetic waves in microwave and… (more)

Subjects/Keywords: Electromagnetics; Absorber; Antenna and propagation; Metamaterial; Metasurface; Nonreciprocal; Transmitter

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APA (6^th Edition):

Li, A. (2018). Active Metasurfaces and Their Applications. (Thesis). University of California – San Diego. Retrieved from http://www.escholarship.org/uc/item/90w0c0dk

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):

Li, Aobo. “Active Metasurfaces and Their Applications.” 2018. Thesis, University of California – San Diego. Accessed October 23, 2019. http://www.escholarship.org/uc/item/90w0c0dk.

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

MLA Handbook (7^th Edition):

Li, Aobo. “Active Metasurfaces and Their Applications.” 2018. Web. 23 Oct 2019.

Vancouver:

Li A. Active Metasurfaces and Their Applications. [Internet] [Thesis]. University of California – San Diego; 2018. [cited 2019 Oct 23]. Available from: http://www.escholarship.org/uc/item/90w0c0dk.

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

Council of Science Editors:

Li A. Active Metasurfaces and Their Applications. [Thesis]. University of California – San Diego; 2018. Available from: http://www.escholarship.org/uc/item/90w0c0dk

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

University of Melbourne

14. Achmari, Panji. Characterisation of sub-radiant modes of metasurfaces.

Degree: 2016, University of Melbourne

URL: http://hdl.handle.net/11343/129429

► Metallic nanostructures can be utilised as optical antennas: devices to assist the conversion between localised (near-field) and propagating (far-field) light. Optical antennas possess sub-radiant modes… (more)

Subjects/Keywords: dark mode; metasurface; optical antenna; optics; sub-radiant mode

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APA (6^th Edition):

Achmari, P. (2016). Characterisation of sub-radiant modes of metasurfaces. (Masters Thesis). University of Melbourne. Retrieved from http://hdl.handle.net/11343/129429

Chicago Manual of Style (16^th Edition):

Achmari, Panji. “Characterisation of sub-radiant modes of metasurfaces.” 2016. Masters Thesis, University of Melbourne. Accessed October 23, 2019. http://hdl.handle.net/11343/129429.

MLA Handbook (7^th Edition):

Achmari, Panji. “Characterisation of sub-radiant modes of metasurfaces.” 2016. Web. 23 Oct 2019.

Vancouver:

Achmari P. Characterisation of sub-radiant modes of metasurfaces. [Internet] [Masters thesis]. University of Melbourne; 2016. [cited 2019 Oct 23]. Available from: http://hdl.handle.net/11343/129429.

Council of Science Editors:

Achmari P. Characterisation of sub-radiant modes of metasurfaces. [Masters Thesis]. University of Melbourne; 2016. Available from: http://hdl.handle.net/11343/129429

University of Pennsylvania

15. Chen, Wenxiang. Designing Plasmonic Materials And Optical Metasurfaces For Light Manipulation And Optical Sensing.

Degree: 2017, University of Pennsylvania

URL: https://repository.upenn.edu/edissertations/2217

► Metamaterials are artificial materials designed to create optical properties that do not exist in nature. They are assemblies of subwavelength structures that are tailored in… (more)

▼ Metamaterials are artificial materials designed to create optical properties that do not exist in nature. They are assemblies of subwavelength structures that are tailored in size, shape, composition, and orientation to realize the desired property. Metamaterials are promising for applications in diverse areas: optical filters, lenses, holography, sensors, photodetectors, photovoltaics, photocatalysts, medical devices, and many more, because of their excellent abilities in bending, absorbing, enhancing and blocking light. However, the practical use of metamaterials is challenged by the lack of plasmonic materials with proper permittivity for different applications and the slow and expensive fabrication methods available to pattern sub-wavelength structures. We have also only touched the surface in exploring the innovative uses of metamaterials to solve world problems. In this thesis, we study the fundamental optical properties of metamaterial building blocks by designing material permittivity. We continuously tune the interparticle distance in colloidal Au nanocrystal (NC) solids via the partial ligand exchange process. Then we combine top-down nanoimprint lithography with bottom-up assembly of colloidal NCs to develop a large-area, low-cost fabrication method for subwavelength nanostructures. Via this method, we fabricate and characterize nano-antenna arrays of different sizes and demonstrate metasurface quarter wave-plates of different bandwidth, and compare their performances with simulation results. We also integrate the metasurfaces with chemically- and mechanically-responsive polymers for strong-signal sensing. In the first design, we combine ultrathin plasmonic nanorods with hydrogel to fabricate optical moisture sensors for agricultural use. In the second application, we design mechanically tunable Au grating resonances on a polydimethylsiloxane (PDMS) substrate. The dimensions of Au grating are carefully engineered to achieve a hybridized, ultrasharp, and ultrasensitive resonance peak.

Subjects/Keywords: Metasurface; Nanocrsytal; PDMS; Plasmonics; Sensor; Engineering; Nanoscience and Nanotechnology; Optics

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APA (6^th Edition):

Chen, W. (2017). Designing Plasmonic Materials And Optical Metasurfaces For Light Manipulation And Optical Sensing. (Thesis). University of Pennsylvania. Retrieved from https://repository.upenn.edu/edissertations/2217

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):

Chen, Wenxiang. “Designing Plasmonic Materials And Optical Metasurfaces For Light Manipulation And Optical Sensing.” 2017. Thesis, University of Pennsylvania. Accessed October 23, 2019. https://repository.upenn.edu/edissertations/2217.

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

MLA Handbook (7^th Edition):

Chen, Wenxiang. “Designing Plasmonic Materials And Optical Metasurfaces For Light Manipulation And Optical Sensing.” 2017. Web. 23 Oct 2019.

Vancouver:

Chen W. Designing Plasmonic Materials And Optical Metasurfaces For Light Manipulation And Optical Sensing. [Internet] [Thesis]. University of Pennsylvania; 2017. [cited 2019 Oct 23]. Available from: https://repository.upenn.edu/edissertations/2217.

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

Council of Science Editors:

Chen W. Designing Plasmonic Materials And Optical Metasurfaces For Light Manipulation And Optical Sensing. [Thesis]. University of Pennsylvania; 2017. Available from: https://repository.upenn.edu/edissertations/2217

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

Australian National University

16. Wang, Lei. Advanced Wavefront Control with Linear and Nonlinear Metasurfaces .

Degree: 2018, Australian National University

URL: http://hdl.handle.net/1885/164707

► Metasurfaces offer unique opportunities for functional flat optics and allow controlling the transmission, reflection, and polarization of light. In particular, all-dielectric resonant metasurfaces have reached… (more)

▼ Metasurfaces offer unique opportunities for functional flat optics and allow controlling the transmission, reflection, and polarization of light. In particular, all-dielectric resonant metasurfaces have reached remarkable efficiencies and performances. The meta-atoms based on generalized Huygens' principle give flexible full-range phase modulation with nearly no loss. Holographic calculations can carefully map out the spatial arrangement of the meta-atoms and exploit the potential of the metasurface platform for wavefront control. Such advanced and complex wavefront engineering is fully studied and extended to the nonlinear regime, where the nonlinear optical response of metasurfaces opens up new degrees of freedom. This offers a paradigm shift in nonlinear optics. The nonlinear metaholograms are expected to revolutionize subwavelength photonics by enhancing substantially the nonlinear response of natural materials combined with an efficient control of the phase of their nonlinear waves. It is believed that the joint effects of advanced wavefront control in linear and nonlinear optics could eventually lead to integrated photonic computing and nanophotonics quantum circuits. In this thesis, the development of the nonlinear holographic metasurfaces is presented in a progressive order. In Chapter 1, we provide a comprehensive introduction to the development of metasurfaces, followed by the motivation of creating practical nanophotonic devices. Chapter 2 explains the principles of designing holographic Metasurfaces and phase modulating meta-atoms. We demonstrate a complex wavefront control using the highly efficient polarization-insensitive holographic Huygens' metasurface based on resonant silicon meta-atoms. Moving forward, we demonstrate the transparent meta-holograms based on silicon metasurfaces that allow high-resolution grayscale images to be encoded. The holograms feature the highest diffraction and transmission efficiencies, and operate over a broad spectral range. Chapter 3 explores various types of nonlinear nano-antennas. The multipolar nature of nonlinear resonance is firstly proved by experiment using a nonlinear setup. Our method of optical diagnostics provides a fast and convenient way to acquire the information on materials' nonlinear responses, and it links the nonlinear behaviors of materials to their intrinsic properties. Both numerically and experimentally, the third-harmonic generation (THG) from silicon dimers composed of pairs of two identical silicon nanoparticles demonstrates the multipolar harmonic modes near the Mie resonances that allow shaping of directionality of nonlinear radiation. Efficient control of both electric and magnetic components of light leads to the enhancement of nonlinear effects near electric and magnetic Mie resonances with an engineered…

Subjects/Keywords: Metasurface; Metamaterial; Nonlinear Optics; Wavefront Control; Phase Control; Hologram; Silicon

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APA (6^th Edition):

Wang, L. (2018). Advanced Wavefront Control with Linear and Nonlinear Metasurfaces . (Thesis). Australian National University. Retrieved from http://hdl.handle.net/1885/164707

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):

Wang, Lei. “Advanced Wavefront Control with Linear and Nonlinear Metasurfaces .” 2018. Thesis, Australian National University. Accessed October 23, 2019. http://hdl.handle.net/1885/164707.

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

MLA Handbook (7^th Edition):

Wang, Lei. “Advanced Wavefront Control with Linear and Nonlinear Metasurfaces .” 2018. Web. 23 Oct 2019.

Vancouver:

Wang L. Advanced Wavefront Control with Linear and Nonlinear Metasurfaces . [Internet] [Thesis]. Australian National University; 2018. [cited 2019 Oct 23]. Available from: http://hdl.handle.net/1885/164707.

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

Council of Science Editors:

Wang L. Advanced Wavefront Control with Linear and Nonlinear Metasurfaces . [Thesis]. Australian National University; 2018. Available from: http://hdl.handle.net/1885/164707

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

University of Washington

17. Zhan, Alan. Design and Optimization of Dielectric Metasurface Optics.

Degree: PhD, 2019, University of Washington

URL: http://hdl.handle.net/1773/44427

► In recent years, sub-wavelength, aperiodic gratings, currently coined metasurfaces have the potential to manipulate electromagnetic elds with extreme control in a remarkably small form factor.… (more)

Subjects/Keywords: dielectric; metasurface; optics; optimization; silicon nitride; Optics; Physics

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APA (6^th Edition):

Zhan, A. (2019). Design and Optimization of Dielectric Metasurface Optics. (Doctoral Dissertation). University of Washington. Retrieved from http://hdl.handle.net/1773/44427

Chicago Manual of Style (16^th Edition):

Zhan, Alan. “Design and Optimization of Dielectric Metasurface Optics.” 2019. Doctoral Dissertation, University of Washington. Accessed October 23, 2019. http://hdl.handle.net/1773/44427.

MLA Handbook (7^th Edition):

Zhan, Alan. “Design and Optimization of Dielectric Metasurface Optics.” 2019. Web. 23 Oct 2019.

Vancouver:

Zhan A. Design and Optimization of Dielectric Metasurface Optics. [Internet] [Doctoral dissertation]. University of Washington; 2019. [cited 2019 Oct 23]. Available from: http://hdl.handle.net/1773/44427.

Council of Science Editors:

Zhan A. Design and Optimization of Dielectric Metasurface Optics. [Doctoral Dissertation]. University of Washington; 2019. Available from: http://hdl.handle.net/1773/44427

Colorado State University

18. Li, Wei. Progress in coherent lithography using table-top extreme ultraviolet lasers.

Degree: PhD, Electrical and Computer Engineering, 2016, Colorado State University

URL: http://hdl.handle.net/10217/173343

► Nanotechnology has drawn a wide variety of attention as interesting phenomena occurs when the dimension of the structures is in the nanometer scale. The particular… (more)

▼ Nanotechnology has drawn a wide variety of attention as interesting phenomena occurs when the dimension of the structures is in the nanometer scale. The particular characteristics of nanoscale structures had enabled new applications in different fields in science and technology. Our capability to fabricate these nanostructures routinely for sure will impact the advancement of nanoscience. Apart from the high volume manufacturing in semiconductor industry, a small-scale but reliable nanofabrication tool can dramatically help the research in the field of nanotechnology. This dissertation describes alternative extreme ultraviolet (EUV) lithography techniques which combine table-top EUV laser and various cost-effective imaging strategies. For each technique, numerical simulations, system design, experiment result and its analysis will be presented. In chapter II, a brief review of the main characteristics of table-top EUV lasers will be addressed concentrating on its high power and large coherence radius that enable the lithography application described herein. The development of a Talbot EUV lithography system which is capable of printing 50nm half pitch nanopatterns will be illustrated in chapter III. A detailed discussion of its resolution limit will be presented followed by the development of X-Y-Z positioning stage, the fabrication protocol for diffractive EUV mask, and the pattern transfer using self- developed ion beam etching, and the dose control unit. In addition, this dissertation demonstrated the capability to fabricate functional periodic nanostructures using Talbot EUV lithography. After that, resolution enhancement techniques like multiple exposure, displacement Talbot EUV lithography, fractional Talbot EUV lithography, and Talbot lithography using 18.9nm amplified spontaneous emission laser will be demonstrated. Chapter IV will describe a hybrid EUV lithography which combines the Talbot imaging and interference lithography rendering a high resolution interference pattern whose lattice is modified by a custom designed Talbot mask. In other words, this method enables filling the arbitrary Talbot cell with ultra-fine interference nanofeatures. Detailed optics modeling, system design and experiment results using He-Ne laser and table top EUV laser are included. The last part of chapter IV will analyze its exclusive advantages over traditional Talbot or interference lithography. Advisors/Committee Members: Marconi, Mario C. (advisor), Menoni, Carmen S. (advisor), Wu, Mingzhong (committee member), Krapf, Diego (committee member).

Subjects/Keywords: Interference; Nanofabrication; Talbot; metasurface; EUV; Soft X-ray laser

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APA (6^th Edition):

Li, W. (2016). Progress in coherent lithography using table-top extreme ultraviolet lasers. (Doctoral Dissertation). Colorado State University. Retrieved from http://hdl.handle.net/10217/173343

Chicago Manual of Style (16^th Edition):

Li, Wei. “Progress in coherent lithography using table-top extreme ultraviolet lasers.” 2016. Doctoral Dissertation, Colorado State University. Accessed October 23, 2019. http://hdl.handle.net/10217/173343.

MLA Handbook (7^th Edition):

Li, Wei. “Progress in coherent lithography using table-top extreme ultraviolet lasers.” 2016. Web. 23 Oct 2019.

Vancouver:

Li W. Progress in coherent lithography using table-top extreme ultraviolet lasers. [Internet] [Doctoral dissertation]. Colorado State University; 2016. [cited 2019 Oct 23]. Available from: http://hdl.handle.net/10217/173343.

Council of Science Editors:

Li W. Progress in coherent lithography using table-top extreme ultraviolet lasers. [Doctoral Dissertation]. Colorado State University; 2016. Available from: http://hdl.handle.net/10217/173343

University of Texas – Austin

19. -1491-1625. Active graphene metasurfaces for optoelectronic applications.

Degree: PhD, Physics, 2018, University of Texas – Austin

URL: http://hdl.handle.net/2152/68389

► Plasmonic metasurfaces are optical components that enhance the light-matter interaction and can control the flow of light. The scalability and universality of the metasurface design… (more)

▼ Plasmonic metasurfaces are optical components that enhance the light-matter interaction and can control the flow of light. The scalability and universality of the metasurface design enables their deployment across the entire electromagnetic spectrum. Especially attractive are the metasurfaces designed to operate in the mid-infrared part of the optical spectrum. That is due to two factors: the variety of technological applications and the limited choice of conventional optical components in the mid-IR spectral region. Graphene has emerged as a promising optoelectronic material because its optical properties can be rapidly and dramatically changed using electric gating. In particular in the mid-IR regime, graphene has plasmonic properties and can be utilized as a tunable inductor for active modulation of the light with an ultra-fast rate. However graphene’s weak optical response, especially in the infrared part of the spectrum, remains the key challenge to developing practical graphene-based optical devices such as modulators, infrared detectors, and tunable reflect-arrays. In this thesis, we take advantage of plasmonic metasurfaces to enhance the light interaction with graphene for crucial optoelectronic applications. The ability to modulate light at a high-speed is an important part of modern communication systems. We use the plasmonic properties of graphene in the mid-IR range to spectrally shift a narrow-width Fano resonance. Using this approach, we achieve strong modulation of amplitude and phase using plasmonic Fano-resonant metasurfaces integrated with graphene. We also demonstrate that the strong spectral shift of the plasmonic resonance can be used to extract one of the key optical parameters of graphene: the free carrier scattering rate. Another interesting branch of optics is wave-front engineering. The ability to dynamically manipulate the phase, inspires interesting applications such as beam steering and holograms. We use a Michelson interferometry to measure the graphene-induced phase modulation. In particular, we show that it is possible to modulate the phase of electromagnetic wave while the amplitude is constant. We demonstrate proof of concept application of active phase modulation in motion sensing and polarization conversion. An emerging area of optoelectronic is ultra-fast photodetectors based on graphene and other 2-D materials. We employ Full-wave and electrostatic simulations to study the performance of a metasurface-based photodetector. Circuit analysis is utilized to provide a mathematical relation for the responsivity of the metasurface-based graphene photodetector. It is shown that electrically-connected metasurfaces can dramatically enhance the collection efficiency of graphene photodetectors. Advisors/Committee Members: Shvets, G. (advisor), Alu, Andrea (committee member), Downer, Michael C (committee member), Keto, John W (committee member), Li, Xiaoqin (committee member).

Subjects/Keywords: Graphene; Metasurface; Optoelectronics; Motion sensing; Photodetectors; Modulators; Fano resonance

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APA (6^th Edition):

-1491-1625. (2018). Active graphene metasurfaces for optoelectronic applications. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/68389

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

Chicago Manual of Style (16^th Edition):

-1491-1625. “Active graphene metasurfaces for optoelectronic applications.” 2018. Doctoral Dissertation, University of Texas – Austin. Accessed October 23, 2019. http://hdl.handle.net/2152/68389.

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

MLA Handbook (7^th Edition):

-1491-1625. “Active graphene metasurfaces for optoelectronic applications.” 2018. Web. 23 Oct 2019.

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

Vancouver:

-1491-1625. Active graphene metasurfaces for optoelectronic applications. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2018. [cited 2019 Oct 23]. Available from: http://hdl.handle.net/2152/68389.

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

Council of Science Editors:

-1491-1625. Active graphene metasurfaces for optoelectronic applications. [Doctoral Dissertation]. University of Texas – Austin; 2018. Available from: http://hdl.handle.net/2152/68389

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

Duke University

20. Liu, Xiaojun. modeling and application of nonlinear metasurface .

Degree: 2018, Duke University

URL: http://hdl.handle.net/10161/16787

► A patterned metasurface can strongly scatter incident light, functioning as an extremely low-profile lens, filter, reflector or other optical devices. Nonlinear metasurfaces‒combine the properties… (more)

▼ A patterned metasurface can strongly scatter incident light, functioning as an extremely low-profile lens, filter, reflector or other optical devices. Nonlinear metasurfaces‒combine the properties of natural nonlinear medium with novel features such as negative refractive index, magneto-electric coupling‒provide novel nonlinear features not available in nature. Compared to conventional optical components that often extend many wavelengths in size, nonlinear metasurfaces are flexible and extremely compact. Characterization of a nonlinear metasurface is challenging, not only due to its inherent anisotropy, but also because of the rich wave interactions available. This thesis presents an overview of the work by the author in modeling and application of nonlinear metasurfaces. Analytical methods - transfer matrix method and surface homogenization method - for characterizing nonlinear metasurfaces are presented. A generalized transfer matrix method formalism for four wave mixing is derived, and applied to analyze nonlinear interface, film, and metallo-dielectric stack. Various channels of plasmonic and Fabry-perot enhancement are investigated. A homogenized description of nonlinear metasurfaces is presented. The homogenization procedure is based on the nonlinear generalized sheet transition conditions (GSTCs), where an optically thin nonlinear metasurface is modeled as a layer of dipoles radiating at fundamental and nonlinear frequencies. By inverting the nonlinear GSTCs, a retrieval procedure is developed to retrieve the nonlinear parameters of the nonlinear metasurface. As an example, we investigate a nonlinear metasurface which presents nonlinear magnetoelectric coupling in near infrared regime. The method is expected to apply to any patterned metasurface whose thickness is much smaller than the wavelengths of operation, with inclusions of arbitrary geometry and material composition, across the electromagnetic spectrum. The second part presents the applications of nonlinear metasurfaces. First, we show that the third-harmonic generation (THG) can be drastically enhanced by the nonlinear metasurfaces – film-coupled nanostripes. The large THG enhancement is experimentally and theoretically demonstrated. With numerical simulations, we present methods to clarify the origin of the THG from the metasurface. Second, the enhanced two-photon photochormism is investigated by integrating spiropyrans with film-coupled nanocubes. This metasurface platform couples almost 100% energy at resonance, and induces isomerization of spiropyrans to merocyanines. Due to the large Purcell enhancement introduced by the film-coupled nanocubes, fluorescence lifetime measurements on the merocyanine form reveal large enhancements on spontaneous emission rate, as well as high quantum efficiency. We show that this metasurface platform is capable of storing information, supports reading and writing with ultra-low power, offering new possibilities in optical data storage. Advisors/Committee Members: Smith, David R (advisor).

Subjects/Keywords: Electrical engineering; Computational physics; electromagnetics; metamaterials; nonlinear metasurface; nonlinear optics; plasmonics

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

APA (6^th Edition):

Liu, X. (2018). modeling and application of nonlinear metasurface . (Thesis). Duke University. Retrieved from http://hdl.handle.net/10161/16787

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):

Liu, Xiaojun. “modeling and application of nonlinear metasurface .” 2018. Thesis, Duke University. Accessed October 23, 2019. http://hdl.handle.net/10161/16787.

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

MLA Handbook (7^th Edition):

Liu, Xiaojun. “modeling and application of nonlinear metasurface .” 2018. Web. 23 Oct 2019.

Vancouver:

Liu X. modeling and application of nonlinear metasurface . [Internet] [Thesis]. Duke University; 2018. [cited 2019 Oct 23]. Available from: http://hdl.handle.net/10161/16787.

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

Council of Science Editors:

Liu X. modeling and application of nonlinear metasurface . [Thesis]. Duke University; 2018. Available from: http://hdl.handle.net/10161/16787

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

Australian National University

21. Komar, Andrei. Tunable All-dielectric Metasurfaces: Fundamentals and Applications .

Degree: 2018, Australian National University

URL: http://hdl.handle.net/1885/171649

► All-dielectric metasurfaces have received significant attention in the past years, and have been established as a platform for efficient manipulation of optical beams. Advances in… (more)

▼ All-dielectric metasurfaces have received significant attention in the past years, and have been established as a platform for efficient manipulation of optical beams. Advances in the design and fabrication of such dielectric metasurfaces have led to the development of several ultra-thin optical metadevices, including flat lenses, beam converters, deflectors and holograms. Composed of periodic or aperiodic lattices of dielectric nanoparticles, metasurfaces exhibit low absorption in the infrared and visible spectral ranges. Low losses allow nanoparticles to exhibit Mie-type resonances with a higher quality-factor in comparison to their plasmonic counterparts. Furthermore, Mie-type resonances in dielectric nanoparticles offer two independent families of resonant modes - electric and magnetic. The far-field interference of these two types of resonant modes leads to fundamentally new effects, such as unidirectional scattering, unconventional reflection behaviour associated with the generalised Brewster effect and near-unity transmission in the so-called Huygens' regime. Operating in the Huygens' regime of the dielectric metasurfaces enables the combination of near-unity transmission together with a full range of phase modulation, thus being the key to enabling functional dielectric metasurfaces with nearly 100% efficiency. Most functional dielectric metasurfaces to date are based on static designs, defined through geometrical parameters, such as nanoparticle shape, size, and array layout. However, in many applications, it is crucial to enable dynamic tunability of the device functionality with time. For example, the focal distance of a camera lens needs to be changed when taking pictures of objects at different distances; the position of the ranging beam in a LIDAR (light imaging, detection, and ranging) for driverless vehicles needs to scan different directions. Therefore, implementing dynamic control} over the response of the metasurfaces is of paramount importance for their practical implementation. In this thesis, I discuss possible ways to achieve tunability from dielectric metasurfaces. At first, I consider existing methods, their pros and cons, as well as possible applications. Further, I offer several methods that I developed and investigated, both theoretically and experimentally. Namely, I describe tuning by changing the properties of resonator material, where I utilise a thermo-optic effect to control the refractive index of resonator particles and consequently the optical response of metasurfaces. Next, I consider tuning by changing the properties of surrounding material, first theoretically, and later demonstrating experimental realisation of this concept using a liquid crystal as a tuning medium. Finally, I describe two tunable metadevices: one, for switching a beam…

Subjects/Keywords: tunable metasurface; Mie-type resonance; liquid crystal; beam deflection

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APA (6^th Edition):

Komar, A. (2018). Tunable All-dielectric Metasurfaces: Fundamentals and Applications . (Thesis). Australian National University. Retrieved from http://hdl.handle.net/1885/171649

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):

Komar, Andrei. “Tunable All-dielectric Metasurfaces: Fundamentals and Applications .” 2018. Thesis, Australian National University. Accessed October 23, 2019. http://hdl.handle.net/1885/171649.

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

MLA Handbook (7^th Edition):

Komar, Andrei. “Tunable All-dielectric Metasurfaces: Fundamentals and Applications .” 2018. Web. 23 Oct 2019.

Vancouver:

Komar A. Tunable All-dielectric Metasurfaces: Fundamentals and Applications . [Internet] [Thesis]. Australian National University; 2018. [cited 2019 Oct 23]. Available from: http://hdl.handle.net/1885/171649.

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

Council of Science Editors:

Komar A. Tunable All-dielectric Metasurfaces: Fundamentals and Applications . [Thesis]. Australian National University; 2018. Available from: http://hdl.handle.net/1885/171649

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

UCLA

22. Xu, Luyao. Terahertz Metasurface Quantum Cascade Laser.

Degree: Electrical Engineering, 2017, UCLA

URL: http://www.escholarship.org/uc/item/7hw5c03s

► Terahertz (THz) frequency range (0.3–10 THz, 30–1000 μm) is the least explored region in the electromagnetic spectrum, mostly due to a relative lack of convenient,… (more)

▼ Terahertz (THz) frequency range (0.3–10 THz, 30–1000 μm) is the least explored region in the electromagnetic spectrum, mostly due to a relative lack of convenient, ecient and economical THz sources. However, THz frequency range has the potential for various applications including but not limited to: astrophysics and space science, biological and medical imaging and spectroscopy, and non-destructive evaluation. This Ph.D. research builds upon the growing request for compact and ecient THz sources with both high power and high-quality beam pattern.Since its invention in 2001, the THz quantum cascade laser (QCL) has emerged as a compact semiconductor THz source capable of delivering milliwatt-level power or higher at various frequencies from 1.2 to 5.6 THz. In the best devices, the operating temperature has reached 200 K in pulsed mode and 129 K in continuous wave (cw) mode. However, the state-of-the-art THz QCLs almost exclusively use sub-wavelength metallic and/or plasmonic waveguides, which leads to highly divergent beams. Achieving high power in combination with an excellent beam pattern for THz QCLs remains a longstanding challenge.Vertical external-cavity-surface-emitting-laser (VECSEL) has been demonstrated as a very successful approach to achieve high power and good beam pattern for semiconductor lasers in the visible and near-infrared. A typical VECSEL configuration consists of a quantumwell (or dot) semiconductor active medium grown monolithically on a Bragg reflector and an output coupler to form a cavity. Output power is scalable with the active medium area and the cavity can be readily engineered to support only the fundamental Gaussian mode. However, the VECSEL concept has been impossible to implement for QCLs owing to “intersubband selection rule”: the intersubband transitions in cascaded quantum wells — the gain medium of QCLs — are only allowed to interact with and provide gain to the electric field polarized perpendicular to the wells. This is incompatible with the natural polarization for surface incident waves in a VECSEL cavity.This thesis reports the development of a new class of THz QCL to achieve high-power output with an excellent beam pattern — THz metasurface quantum-cascade VECSEL (QC-VECSEL). The enabling component of QC-VECSEL is an active metasurface reflector composed of a sub-wavelength array of metallic microcavity antennas; each antenna efficiently couples in THz radiation, amplifies it and re-radiates into the free space. Lasing is possible when an active metasurface is paired with an output coupler form a low-loss cavity. This new architecture gives the ability to scale up output power with the metasurface area while maintaining a good beam pattern shaped by the external cavity. Moreover, this approach can leverage ongoing advances in novel metasurfaces to realize versatile functionality for QC-VECSELs, such as engineerable polarization/wavefront, spectral tunability. The demonstration of THz QC-VECSEL marks the two “firsts”: the first VECSEL in the THz frequency range and the first…

Subjects/Keywords: Electrical engineering; Electromagnetics; Optics; metamaterial; metasurface; quantum cascade laser; reflectarray; terahertz; VECSEL

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APA (6^th Edition):

Xu, L. (2017). Terahertz Metasurface Quantum Cascade Laser. (Thesis). UCLA. Retrieved from http://www.escholarship.org/uc/item/7hw5c03s

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):

Xu, Luyao. “Terahertz Metasurface Quantum Cascade Laser.” 2017. Thesis, UCLA. Accessed October 23, 2019. http://www.escholarship.org/uc/item/7hw5c03s.

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

MLA Handbook (7^th Edition):

Xu, Luyao. “Terahertz Metasurface Quantum Cascade Laser.” 2017. Web. 23 Oct 2019.

Vancouver:

Xu L. Terahertz Metasurface Quantum Cascade Laser. [Internet] [Thesis]. UCLA; 2017. [cited 2019 Oct 23]. Available from: http://www.escholarship.org/uc/item/7hw5c03s.

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

Council of Science Editors:

Xu L. Terahertz Metasurface Quantum Cascade Laser. [Thesis]. UCLA; 2017. Available from: http://www.escholarship.org/uc/item/7hw5c03s

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

University of California – San Diego

23. Long, Jiang. Non-Foster Circuit Loaded Periodic Structures for Broadband Fast and Slow Wave Propagation.

Degree: Electrical Engineering (Electronic Circuits and Systems), 2015, University of California – San Diego

URL: http://www.escholarship.org/uc/item/1q90m4jj

► Periodic structure has been extensively applied in many applications, such as wireless communication, sensing, and advanced applied electromagnetics such as invisible cloaking and superlens. However,… (more)

▼ Periodic structure has been extensively applied in many applications, such as wireless communication, sensing, and advanced applied electromagnetics such as invisible cloaking and superlens. However, as broadband systems have rapidly advanced, the bandwidth of the periodic structure has become a bottleneck. In particular, the high dispersion of the periodic structure prevents it from being applied to future wide-band practical applications. Extensive research efforts have been done on the bandwidth problem of the periodic structure, and these have concluded that there is a fundamental bandwidth limitation for passive electromagnetic structures. Nevertheless, great interest still remains in finding alternative solutions to increase the bandwidth of the periodic structures. All conventional periodic structures are based on a repeatedly patterned passive metallic structure, which can be characterized as passive impedance that follows the Foster's theorem, resulting in a fundamental bandwidth limitation. In contrast, an active periodic structure is composed of unit cells that violate Foster's theorem. Thus, they are potentially capable of breaking the bandwidth limitation.This thesis studies the non-Foster impedance loaded periodic structures and their broadband electromagnetic fast and slow wave propagation applications. To be more specific, a non-Foster impedance, realized by an active feedback circuit, is applied to the unit cell of the periodic structures in order to increase the bandwidth of the unit cell and eventually broaden the bandwidth of the periodic structures.The thesis first introduces the fundamental principle of the non-Foster impedance, explains its difference to the passive impedance, and presents its possible active circuit implementation: a negative impedance converter based non-Foster circuit, which covers the derivation of the non-Foster input impedance, its stability, and a design example. Then, the thesis presents broadband fast and slow wave propagation based on the non-Foster impedance loaded periodic structures. For fast wave propagation, a periodically non-Foster impedance loaded waveguide is designed, fabricated, measured, and demonstrated for broadband dispersion-reduced fast wave propagation. The non-Foster fast wave propagation study extends to the observation of the dispersionless superluminal pulse transmission, and a fundamental limitation of a periodic non-Foster loading-based waveguide. On the other hand, this thesis also presents an extremely low-profile slow wave supported electromagnetic surface structure by loading non-Foster impedance to a conventional artificial impedance surface. All the applications presented in the thesis include the principle of loading non-Foster impedance to the conventional passive periodic electromagnetic structures, the design of the non-Foster impedance circuits, and the broadband measurement demonstration.

Subjects/Keywords: Electrical engineering; Electromagnetics; fast wave; metamaterial; metasurface; non-Foster circuit; periodic structure; slow wave

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

APA (6^th Edition):

Long, J. (2015). Non-Foster Circuit Loaded Periodic Structures for Broadband Fast and Slow Wave Propagation. (Thesis). University of California – San Diego. Retrieved from http://www.escholarship.org/uc/item/1q90m4jj

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):

Long, Jiang. “Non-Foster Circuit Loaded Periodic Structures for Broadband Fast and Slow Wave Propagation.” 2015. Thesis, University of California – San Diego. Accessed October 23, 2019. http://www.escholarship.org/uc/item/1q90m4jj.

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

MLA Handbook (7^th Edition):

Long, Jiang. “Non-Foster Circuit Loaded Periodic Structures for Broadband Fast and Slow Wave Propagation.” 2015. Web. 23 Oct 2019.

Vancouver:

Long J. Non-Foster Circuit Loaded Periodic Structures for Broadband Fast and Slow Wave Propagation. [Internet] [Thesis]. University of California – San Diego; 2015. [cited 2019 Oct 23]. Available from: http://www.escholarship.org/uc/item/1q90m4jj.

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

Council of Science Editors:

Long J. Non-Foster Circuit Loaded Periodic Structures for Broadband Fast and Slow Wave Propagation. [Thesis]. University of California – San Diego; 2015. Available from: http://www.escholarship.org/uc/item/1q90m4jj

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

Université Catholique de Louvain

24. Hubert, Simon. Numerical analysis of strongly coupled antenna arrays and metasurfaces.

Degree: 2018, Université Catholique de Louvain

URL: http://hdl.handle.net/2078.1/198381

►

Nowadays, communication technologies form an essential part of our everyday lives. Antenna systems receive thus more and more attention from both industrial and academic actors.… (more)

Subjects/Keywords: Antenna; Metasurface; Electromagnetics; Computational electromagnetics; Antenna array; Numerical method; Algorithm; Simulation; Mutual coupling; Numerical analysis

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APA (6^th Edition):

Hubert, S. (2018). Numerical analysis of strongly coupled antenna arrays and metasurfaces. (Thesis). Université Catholique de Louvain. Retrieved from http://hdl.handle.net/2078.1/198381

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):

Hubert, Simon. “Numerical analysis of strongly coupled antenna arrays and metasurfaces.” 2018. Thesis, Université Catholique de Louvain. Accessed October 23, 2019. http://hdl.handle.net/2078.1/198381.

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

MLA Handbook (7^th Edition):

Hubert, Simon. “Numerical analysis of strongly coupled antenna arrays and metasurfaces.” 2018. Web. 23 Oct 2019.

Vancouver:

Hubert S. Numerical analysis of strongly coupled antenna arrays and metasurfaces. [Internet] [Thesis]. Université Catholique de Louvain; 2018. [cited 2019 Oct 23]. Available from: http://hdl.handle.net/2078.1/198381.

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

Council of Science Editors:

Hubert S. Numerical analysis of strongly coupled antenna arrays and metasurfaces. [Thesis]. Université Catholique de Louvain; 2018. Available from: http://hdl.handle.net/2078.1/198381

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

25. MEI SHENGTAO. STUDY OF VORTEX BEAM AND ORBITAL ANGULAR MOMENTUM BY METASURFACE.

Degree: 2017, National University of Singapore

URL: http://scholarbank.nus.edu.sg/handle/10635/138481

Subjects/Keywords: metasurface; OAM; beam; vortex; hologram; tunable

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APA (6^th Edition):

SHENGTAO, M. (2017). STUDY OF VORTEX BEAM AND ORBITAL ANGULAR MOMENTUM BY METASURFACE. (Thesis). National University of Singapore. Retrieved from http://scholarbank.nus.edu.sg/handle/10635/138481

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):

SHENGTAO, MEI. “STUDY OF VORTEX BEAM AND ORBITAL ANGULAR MOMENTUM BY METASURFACE.” 2017. Thesis, National University of Singapore. Accessed October 23, 2019. http://scholarbank.nus.edu.sg/handle/10635/138481.

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

MLA Handbook (7^th Edition):

SHENGTAO, MEI. “STUDY OF VORTEX BEAM AND ORBITAL ANGULAR MOMENTUM BY METASURFACE.” 2017. Web. 23 Oct 2019.

Vancouver:

SHENGTAO M. STUDY OF VORTEX BEAM AND ORBITAL ANGULAR MOMENTUM BY METASURFACE. [Internet] [Thesis]. National University of Singapore; 2017. [cited 2019 Oct 23]. Available from: http://scholarbank.nus.edu.sg/handle/10635/138481.

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

Council of Science Editors:

SHENGTAO M. STUDY OF VORTEX BEAM AND ORBITAL ANGULAR MOMENTUM BY METASURFACE. [Thesis]. National University of Singapore; 2017. Available from: http://scholarbank.nus.edu.sg/handle/10635/138481

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

University of Ottawa

26. Saad-Bin-Alam, Md. Analysis of Plasmonic Metastructures for Engineered Nonlinear Nanophotonics .

Degree: 2019, University of Ottawa

URL: http://hdl.handle.net/10393/39120

► This Master’s dissertation focuses on engineering artificial nanostructures, namely, arrays of metamolecules on a substrate (metasurfaces), with the goal to achieve the desired linear and… (more)

Subjects/Keywords: Metasurface; Nonlinear Optics; Localized Surface Plasmon Resonances; RLC Circuit; Surface Lattice Resonances; Q-Factor

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APA (6^th Edition):

Saad-Bin-Alam, M. (2019). Analysis of Plasmonic Metastructures for Engineered Nonlinear Nanophotonics . (Thesis). University of Ottawa. Retrieved from http://hdl.handle.net/10393/39120

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):

Saad-Bin-Alam, Md. “Analysis of Plasmonic Metastructures for Engineered Nonlinear Nanophotonics .” 2019. Thesis, University of Ottawa. Accessed October 23, 2019. http://hdl.handle.net/10393/39120.

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

MLA Handbook (7^th Edition):

Saad-Bin-Alam, Md. “Analysis of Plasmonic Metastructures for Engineered Nonlinear Nanophotonics .” 2019. Web. 23 Oct 2019.

Vancouver:

Saad-Bin-Alam M. Analysis of Plasmonic Metastructures for Engineered Nonlinear Nanophotonics . [Internet] [Thesis]. University of Ottawa; 2019. [cited 2019 Oct 23]. Available from: http://hdl.handle.net/10393/39120.

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

Council of Science Editors:

Saad-Bin-Alam M. Analysis of Plasmonic Metastructures for Engineered Nonlinear Nanophotonics . [Thesis]. University of Ottawa; 2019. Available from: http://hdl.handle.net/10393/39120

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

University of Michigan

27. Zhang, Cheng. Optical Properties and Optoelectronic Applications of Nano-size Metallic Films and Metamaterials.

Degree: PhD, Electrical Engineering, 2016, University of Michigan

URL: http://hdl.handle.net/2027.42/133414

► Future optical and optoelectronic devices are desired to have compact sizes, high efficiencies, robust performance, and low manufacturing costs. All these advances demand developments both… (more)

▼ Future optical and optoelectronic devices are desired to have compact sizes, high efficiencies, robust performance, and low manufacturing costs. All these advances demand developments both in their constituent materials and design concepts. Silver (Ag) is one of the most widely used materials for optoelectronic devices and metamaterials. However, Ag is well known to have several issues, including difficulty to form high-quality thin films, poor stability in an ambient environment and under elevated temperatures, and inferior adhesion with substrates. In light of this, a new kind of silver: doped silver is developed. With the aid of a small amount of doping elements during the Ag deposition, ultra-thin, smooth, and low-loss Ag films are obtained. Compared to pure Ag films, doped Ag films have a significantly improved long-term and thermal stability, as well as good adhesion to various substrates. Doped Ag films have facilitated diverse high-performance optical and optoelectronic devices, such as organic solar cells, organic light emitting diodes, optical metamaterials, and plasmonic devices. Metamaterials are artificially designed materials with extraordinary optical properties. Nano-size metamaterials (metasurfaces) are demonstrated for controlling various properties of light. An asymmetric light transmitting metasurface consisting of coupled metallic sheets is demonstrated. It has a measured transmission efficiency of 80%, extinction ratio of 13.8 dB around 1.5 µm, and a full width half maximum bandwidth of 1.7 µm. It is as thin as 290 nm, has good performance tolerance against the angle of incidence and constituent nano-structure geometry variations. In addition, a large-area, printed metasurface is designed and fabricated. It is made of lossless dielectric (silicon) materials and offers the functionality of converting a linearly polarized incident light into a radially polarized transmitted light. These optical and optoelectronic devices also provide valuable solutions to problems in other fields, such as acoustic wave detection. It is shown that optical resonant structures provide a unique approach for acoustic wave detection. Nanoimprinted polymer microring resonators are investigated as high-performance ultrasound detectors. To further reduce the detector size, polymer filled silicon metasurfaces on fiber tips are also designed and fabricated. Advisors/Committee Members: Guo, L Jay (committee member), Liang, Xiaogan (committee member), Norris, Theodore B (committee member), Grbic, Anthony (committee member).

Subjects/Keywords: Ultra-thin Silver Film; Metasurface; Optical Ultrasound Detector; Metamaterial; Electrical Engineering; Engineering

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APA (6^th Edition):

Zhang, C. (2016). Optical Properties and Optoelectronic Applications of Nano-size Metallic Films and Metamaterials. (Doctoral Dissertation). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/133414

Chicago Manual of Style (16^th Edition):

Zhang, Cheng. “Optical Properties and Optoelectronic Applications of Nano-size Metallic Films and Metamaterials.” 2016. Doctoral Dissertation, University of Michigan. Accessed October 23, 2019. http://hdl.handle.net/2027.42/133414.

MLA Handbook (7^th Edition):

Zhang, Cheng. “Optical Properties and Optoelectronic Applications of Nano-size Metallic Films and Metamaterials.” 2016. Web. 23 Oct 2019.

Vancouver:

Zhang C. Optical Properties and Optoelectronic Applications of Nano-size Metallic Films and Metamaterials. [Internet] [Doctoral dissertation]. University of Michigan; 2016. [cited 2019 Oct 23]. Available from: http://hdl.handle.net/2027.42/133414.

Council of Science Editors:

Zhang C. Optical Properties and Optoelectronic Applications of Nano-size Metallic Films and Metamaterials. [Doctoral Dissertation]. University of Michigan; 2016. Available from: http://hdl.handle.net/2027.42/133414

28. Abadie, Quentin. Etude système de structures sub-lambda pour l'imagerie infrarouge : Study of sub-wavelength structures for infrared imaging.

Degree: Docteur es, Physique appliquée, 2018, Grenoble Alpes

URL: http://www.theses.fr/2018GREAY071

►

Dans le domaine de l'imagerie infrarouge, on distingue deux types de technologies : les détecteurs refroidis, coûteux et très performants, et les détecteurs thermiques, bas… (more)

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Dans le domaine de l'imagerie infrarouge, on distingue deux types de technologies : les détecteurs refroidis, coûteux et très performants, et les détecteurs thermiques, bas coût et moins encombrants. Dans les deux cas le système optique associé au détecteur représente une part importante du coût total du fait de la production unitaire de lentilles et du besoin en une résolution de plus en plus importante pour suivre la diminution du pas pixel et l'augmentation du format des détecteurs. Dès lors il est intéressant d'explorer des solutions pour diminuer le coût et l'encombrement du système optique tout en maintenant ou en améliorant les performances optiques. Dans ce contexte, ce travail de thèse s'intéresse à l'utilisation d'optiques sub-lambda ou métasurfaces optiques en matériau diélectrique au sein de systèmes d'imagerie infrarouge. De telles optiques sont peu encombrantes et fabriquées par des moyens issus de l'industrie de la microélectronique ce qui permet d'envisager une fabrication collective donc une diminution des coûts. Ces objets sont obtenus en structurant un substrat plan avec des motifs de taille inférieure à la longueur d'onde. La géométrie de ces motifs, dans des matériaux à forts indices de réfraction et transparents dans l'infrarouge comme le silicium, permettent de modifier les propriétés d'une onde optique : sa polarisation, sa phase, sa dispersion et la transmission. Cependant il est complexe de contrôler tout ces paramètres tout en prenant compte des limites technologiques des outils de fabrication. Ce travail s'est donc orienté vers la conception de systèmes optiques mêlant lentilles réfractives et lames sub-lambda de correction de front d'onde. Pour ce faire nous avons (i) développé un outil de simulation mêlant calculs électromagnétiques par la méthode RCWA, pour rendre compte du comportement d'une optique sub-lambda, et conception optique pour la partie réfractive. Nos optiques sub-lambda ont dès lors des dimensions millimétriques à centimétriques pour être couplées à des lentilles réfractives au sein de systèmes d'imagerie, et notre méthode permet de simuler efficacement de tels systèmes optiques. Dans un second temps nous avons (ii) développé des procédés de fabrication de prototypes d'optiques sub-lambda, notamment pour la correction d'aberration sphérique dans le LWIR (bande 8-14µm de longueur d'onde). (iii) Enfin la caractérisation de nos systèmes optiques a permis de valider notre modèle et de démontrer une forte amélioration de la FTM d'un système optique aberrant associé à une lame sub-lambda de correction de front d'onde (FTM multipliée par 3 à 25 cycles par millimètre). Nos derniers résultats montrent une amélioration sur une bande 8-12µm de nos systèmes optiques et ouvrent la voie vers la conception d'optiques sub-lambda large bande au sein de systèmes d'imagerie infrarouge.

In the field of infrared imaging, there are two main types of detectors : cooled detectors, with great sensitivity but expensive, and uncooled detectors, exhibiting precise temperature measurement at…

Advisors/Committee Members: Rothman, Johan (thesis director).

Subjects/Keywords: Sublambda; Métasurface; Imagerie; Infrarouge; Optique; Diélectrique; Subwavelength; Metasurface; Imaging; Infrared; Optics; Dielectric; 530

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

APA (6^th Edition):

Abadie, Q. (2018). Etude système de structures sub-lambda pour l'imagerie infrarouge : Study of sub-wavelength structures for infrared imaging. (Doctoral Dissertation). Grenoble Alpes. Retrieved from http://www.theses.fr/2018GREAY071

Chicago Manual of Style (16^th Edition):

Abadie, Quentin. “Etude système de structures sub-lambda pour l'imagerie infrarouge : Study of sub-wavelength structures for infrared imaging.” 2018. Doctoral Dissertation, Grenoble Alpes. Accessed October 23, 2019. http://www.theses.fr/2018GREAY071.

MLA Handbook (7^th Edition):

Abadie, Quentin. “Etude système de structures sub-lambda pour l'imagerie infrarouge : Study of sub-wavelength structures for infrared imaging.” 2018. Web. 23 Oct 2019.

Vancouver:

Abadie Q. Etude système de structures sub-lambda pour l'imagerie infrarouge : Study of sub-wavelength structures for infrared imaging. [Internet] [Doctoral dissertation]. Grenoble Alpes; 2018. [cited 2019 Oct 23]. Available from: http://www.theses.fr/2018GREAY071.

Council of Science Editors:

Abadie Q. Etude système de structures sub-lambda pour l'imagerie infrarouge : Study of sub-wavelength structures for infrared imaging. [Doctoral Dissertation]. Grenoble Alpes; 2018. Available from: http://www.theses.fr/2018GREAY071

Northeastern University

29. Farmahini Farahani, Mohsen. Plasmonics and metasurfaces for infrared wave engineering.

Degree: PhD, Department of Electrical and Computer Engineering, 2014, Northeastern University

URL: http://hdl.handle.net/2047/d20004967

► In this dissertation, we investigate several novel passive components composed of plasmonic materials at infrared regime. As an example for a passive plasmonic component, we… (more)

▼ In this dissertation, we investigate several novel passive components composed of plasmonic materials at infrared regime. As an example for a passive plasmonic component, we present a bandpass filter integrated into a metal-insulator-metal (MIM) waveguide at mid-infrared range. Design techniques already developed in microwave and circuit theory used to realize the filter. The insulator is air and metal parts are silver where their loss considered in our simulations. The filter passband is from 27 THz to 33 THz (9.1 μm to 11.1 μm) and the simulated insertion loss is 1.7 dB. The filter length is 16.9 μm, almost 1.7 times center wavelength (10 μm).; Then, two bandpass filters operating at 27-33 THz and 36-41 THz bands are integrated with a power splitter to form a frequency diplexer. The performance of the designed diplexer is outstanding in terms of channel isolation (better that 30 dB) and loss. The proposed design method is scalable in the infrared and visible range and can also be used to realize frequency multiplexers.; In chapter 2, a reflectarray metasurfaces composed of rectangular metallic patches on top of a grounded dielectric layer is presented. The novelty of the reflectarray lies in its polarization dependent reflection angle. The reflection angle can be designed independently for either of the two incoming polarizations.; We demonstrate a 16λ×16λ birefringent reflectarray operating at 8.06 μm wavelength. The array reflects the two orthogonal polarizations into +30° and -30° directions. This birefringent metasurface can be used in polarimetry applications and waveplate working in reflection mode.; In chapter 3, the concept of plasmonic graded index material is introduced and investigated. A 15λ×15λ graded index metasurface is designed to collimate and steer the power emerging from an aperture into a narrow beam. The graded index pattern is obtained using holography technique. The presented metasurface works at 5.2 μm with fractional bandwidth of 8%. The metasurface steers the beam to 0_30° direction and the Half Power Beam Widths (HPBW) of the beam are 6° and 16° in elevation and azimuth planes, respectively. The graded index metasurface can be used to pattern the aperture of Quantum Cascade Laser (QCL) to enhance its beam collimation.; In chapter 4, we present a novel subwavelength double-layer unit cell constructed of L-shaped and concentric loop nanoantennas which can independently manipulate the amplitude and phase of an incident wave. The unit cell is made of two layers of scatterers, where the first can tune the amplitude and the second the desired phase. We show that metasurfaces composed of this unit cell can be used to achieve arbitrary transmission amplitude and phase profiles. Furthermore, we illustrate that these metasurfaces along with Fourier Transform (FT) blocks can be used to realize unique Linear Space Invariant (LSI) transfer functions. This approach opens opportunity for light processing on flat platforms.

Subjects/Keywords: Infrared; Metamaterial; Metasurface; Plasmonics; Reflectarray; Electrical and Computer Engineering; Electromagnetics and photonics

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

APA (6^th Edition):

Farmahini Farahani, M. (2014). Plasmonics and metasurfaces for infrared wave engineering. (Doctoral Dissertation). Northeastern University. Retrieved from http://hdl.handle.net/2047/d20004967

Chicago Manual of Style (16^th Edition):

Farmahini Farahani, Mohsen. “Plasmonics and metasurfaces for infrared wave engineering.” 2014. Doctoral Dissertation, Northeastern University. Accessed October 23, 2019. http://hdl.handle.net/2047/d20004967.

MLA Handbook (7^th Edition):

Farmahini Farahani, Mohsen. “Plasmonics and metasurfaces for infrared wave engineering.” 2014. Web. 23 Oct 2019.

Vancouver:

Farmahini Farahani M. Plasmonics and metasurfaces for infrared wave engineering. [Internet] [Doctoral dissertation]. Northeastern University; 2014. [cited 2019 Oct 23]. Available from: http://hdl.handle.net/2047/d20004967.

Council of Science Editors:

Farmahini Farahani M. Plasmonics and metasurfaces for infrared wave engineering. [Doctoral Dissertation]. Northeastern University; 2014. Available from: http://hdl.handle.net/2047/d20004967

30. Faure, Cédric. Contrôle de la diffusion par des façades : cas des métasurfaces et des guides d'ondes ouverts inhomogènes : Control of diffusion by the facades : metasurfaces and open inhomogeneous waveguides.

Degree: Docteur es, Acoustique, 2017, Le Mans

URL: http://www.theses.fr/2017LEMA1033

L’objectif de ce travail est le développement de dispositifs de contrôle de la diffusion des ondes acoustiques à l’aide de surfaces hétérogènes, pour des applications à l’acoustique urbaine. Pour remplir cet objectif, deux méthodes sont employées. La première à l’aide d’une métasurface, la direction d’une onde réfléchie est contrôlée. La seconde étude concerne l’influence d’un traitement inhomogène aux parois d’un guide ouvert sur les effets conjoints ou compétitifs d’absorption, de confinement et de rayonnement de l’onde. Nous montrons expérimentalement la possibilité de dissimuler un objet disposé sur un mur pour une onde acoustique audible. Pour y parvenir, une métasurface composée de différents résonateurs de Helmholtz est conçue et est réalisée de façon à être la plus fine possible. Ces travaux sont réalisés dans le domaine fréquentiel mais également dans le domaine temporel, ce qui permet de mettre en avant le caractère large bande de la métasurface. Il est démontré numériquement et expérimentalement que la direction des ondes réfléchies peut être contrôlée. Enfin la dernière partie est consacrée à l’influence d’une paroi hétérogène sur la propagation d’une onde acoustique à l’intérieur d’une rue. Une rue pouvant être assimilée à un guide d’onde ouvert engendre donc des modes de propagation complexes, dus aux pertes par rayonnement. La présence d’un matériau poreux sur les parois d’un guide vient perturber fortement la localisation spatiale des modes, ce qui les rend plus ou moins fuyants.

The aim of this thesis is to develop a scheme for controling the propagation of acoustic waves using heteregenous surfaces. Its results can be applied in the field of urban acoustic. The thesis is composed of two sections, each of them employing a different method. The first section focuses on controling the direction of a reflected wave, using a metasurface. The second concentrates on the influence of an inconsistent treatment to the side of an open waveguide on the wave joint and competitive effects of absorption, confinement and radiation. Part one provides experimental evidence that it is possible to conceal an object placed on a wall from an audible acoustic wave. To prove it, the thinest possible metasurface was constructed with Helmholtz resonators. The experimental results were compared to a numerical study realized with finite elements. This work was made in both temporal and frequency domains, allowing to point out the wide frequency characteristics of the metasurface. The numerical and experimental results show that the direction of a reflected wave can, indeed, be controled. Part two analyse the impact of a heterogeneous wall on the spreadinf of an acoustic wave in a street. Due to radiation losses, the street produces complex ways of propagation. The presence of a porous material on a waveguide‘ side deeply disrupt the spatial location of these waves, making them more or less fleeting. In particular, depending on the position of the material in the…

Advisors/Committee Members: Richoux, Olivier (thesis director), Félix, Simon (thesis director), Pagneux, Vincent (thesis director).

Subjects/Keywords: Métasurface acoustique; Résonateur de Helmholtz; Cloaking; FE-Modal; Guide d’onde; Acoustic metasurface; Helmholtz resonator; Waveguide; 620.2

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

APA (6^th Edition):

Faure, C. (2017). Contrôle de la diffusion par des façades : cas des métasurfaces et des guides d'ondes ouverts inhomogènes : Control of diffusion by the facades : metasurfaces and open inhomogeneous waveguides. (Doctoral Dissertation). Le Mans. Retrieved from http://www.theses.fr/2017LEMA1033

Chicago Manual of Style (16^th Edition):

Faure, Cédric. “Contrôle de la diffusion par des façades : cas des métasurfaces et des guides d'ondes ouverts inhomogènes : Control of diffusion by the facades : metasurfaces and open inhomogeneous waveguides.” 2017. Doctoral Dissertation, Le Mans. Accessed October 23, 2019. http://www.theses.fr/2017LEMA1033.

MLA Handbook (7^th Edition):

Faure, Cédric. “Contrôle de la diffusion par des façades : cas des métasurfaces et des guides d'ondes ouverts inhomogènes : Control of diffusion by the facades : metasurfaces and open inhomogeneous waveguides.” 2017. Web. 23 Oct 2019.

Vancouver:

Faure C. Contrôle de la diffusion par des façades : cas des métasurfaces et des guides d'ondes ouverts inhomogènes : Control of diffusion by the facades : metasurfaces and open inhomogeneous waveguides. [Internet] [Doctoral dissertation]. Le Mans; 2017. [cited 2019 Oct 23]. Available from: http://www.theses.fr/2017LEMA1033.

Council of Science Editors:

Faure C. Contrôle de la diffusion par des façades : cas des métasurfaces et des guides d'ondes ouverts inhomogènes : Control of diffusion by the facades : metasurfaces and open inhomogeneous waveguides. [Doctoral Dissertation]. Le Mans; 2017. Available from: http://www.theses.fr/2017LEMA1033

Open Access Theses and Dissertations