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://submit-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/Co-Advisor, Douglas Henry Werner, Committee Chair/Co-Chair, Ram Mohan Narayanan, Committee Member, Pingjuan Li Werner, Committee Member, Ramakrishnan Rajagopalan, Outside Member.

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://submit-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 April 13, 2021. https://submit-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. 13 Apr 2021.

Vancouver:

Yue T. ADVANCED COMPACT, LOW PROFILE ANTENNA DESIGNS FOR MODERN COMMUNICATION SYSTEMS. [Internet] [Thesis]. Penn State University; 2018. [cited 2021 Apr 13]. Available from: https://submit-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://submit-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 April 13, 2021. 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. 13 Apr 2021.

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 2021 Apr 13]. 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 April 13, 2021. 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. 13 Apr 2021.

Vancouver:

Colburn S. Dielectric Metasurface Optics: A New Platform for Compact Optical Sensing. [Internet] [Thesis]. University of Washington; 2017. [cited 2021 Apr 13]. 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 Exeter

4. Shi, C. Metasurface based mid-infrared devices.

Degree: PhD, 2019, University of Exeter

URL: http://hdl.handle.net/10871/39300

► The development of compact, efficient, and powerful mid-infrared devices is mainly restrained by the limited choice of materials due to the high loss of conventional… (more)

▼ The development of compact, efficient, and powerful mid-infrared devices is mainly restrained by the limited choice of materials due to the high loss of conventional optical materials in the mid-infrared range. The aim of this work was to find alternative novel materials which would enable the realization of devices with smaller size while maintaining its functionality. Metasurface and graphene have emerged as promising materials which can help us to manipulate the infrared light within nano-meter scale thickness. In this thesis, three different mid-infrared devices, thermal emitter, wave trapping sensor and phase modulator were designed based on either metasurface or both metasurface and graphene. Devices were all fabricated with modern semiconductor fabrication processes and their performances were also fully investigated, both experimentally and through simulations. A metasurface was first designed as a frequency selective layer on a graphene thermal emitter to tailor the graybody emission spectrum from a graphene filament into two discrete narrow bands for applications such as gas sensing or molecule detection. The emission and reflectance spectra of the devices were characterised using (FTIR) Fourier transform infrared spectroscopy and showed good agreement with simulations based on the Finite-difference time-domain (FDTD). method. The use of a metasurface to enhance the interaction between molecular vibrations and the evanescent waves, in a total attenuated reflectance system, was also explored. A complementary ring-resonator structure was patterned onto both silicon and SiO2/Si substrates, and the spectral properties of both devices were characterised using an FTIR-ATR system. Experiments were undertaken using 5µL mixtures containing trace amounts of butyl acetate diluted with oleic acid. Without the use of a metasurface, the minimum concentration of butyl acetate that could be clearly detected was 10%, whereas the use of the metasurface on the SiO2/Si substrate allowed the detection of 1% butyl acetate. Finally, graphene was integrated into a metasurface structure to achieve tunability of the design. The third device investigated was a phase modulator which shows the capability to change the amplitude and phase of the reflected wave by electrostatically gating the graphene from -90V to 90V. A dynamic beam steering lens model which is made up of a unit cell consisting of four phase modulator with different phase shift was also proposed to control the angle for the reflected wave from specular to 30°.

Subjects/Keywords: Metasurface; Graphene; Mid-infrared

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

APA (6^th Edition):

Shi, C. (2019). Metasurface based mid-infrared devices. (Doctoral Dissertation). University of Exeter. Retrieved from http://hdl.handle.net/10871/39300

Chicago Manual of Style (16^th Edition):

Shi, C. “Metasurface based mid-infrared devices.” 2019. Doctoral Dissertation, University of Exeter. Accessed April 13, 2021. http://hdl.handle.net/10871/39300.

MLA Handbook (7^th Edition):

Shi, C. “Metasurface based mid-infrared devices.” 2019. Web. 13 Apr 2021.

Vancouver:

Shi C. Metasurface based mid-infrared devices. [Internet] [Doctoral dissertation]. University of Exeter; 2019. [cited 2021 Apr 13]. Available from: http://hdl.handle.net/10871/39300.

Council of Science Editors:

Shi C. Metasurface based mid-infrared devices. [Doctoral Dissertation]. University of Exeter; 2019. Available from: http://hdl.handle.net/10871/39300

Vanderbilt University

5. -5810-2347. Multilayer Flat Optics.

Degree: PhD, Interdisciplinary Materials Science, 2020, Vanderbilt University

URL: http://hdl.handle.net/1803/15962

► Optical metasurfaces have emerged as an attractive platform for manipulating the wavefront of light based on thin film flat optics. Despite their design degrees of… (more)

Subjects/Keywords: Optics; Metasurface; Flat optics; Multilayer

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APA (6^th Edition):

-5810-2347. (2020). Multilayer Flat Optics. (Doctoral Dissertation). Vanderbilt University. Retrieved from http://hdl.handle.net/1803/15962

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

Chicago Manual of Style (16^th Edition):

-5810-2347. “Multilayer Flat Optics.” 2020. Doctoral Dissertation, Vanderbilt University. Accessed April 13, 2021. http://hdl.handle.net/1803/15962.

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

MLA Handbook (7^th Edition):

-5810-2347. “Multilayer Flat Optics.” 2020. Web. 13 Apr 2021.

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

Vancouver:

-5810-2347. Multilayer Flat Optics. [Internet] [Doctoral dissertation]. Vanderbilt University; 2020. [cited 2021 Apr 13]. Available from: http://hdl.handle.net/1803/15962.

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

Council of Science Editors:

-5810-2347. Multilayer Flat Optics. [Doctoral Dissertation]. Vanderbilt University; 2020. Available from: http://hdl.handle.net/1803/15962

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

University of Texas – Austin

6. Liu, Yingnan, Ph. D. Second-order nonlinear intersubband polaritonic metasurfaces.

Degree: PhD, Electrical and Computer Engineering, 2020, University of Texas – Austin

URL: http://dx.doi.org/10.26153/tsw/8127

► Frequency mixing is an essential nonlinear process with extensive applications in photonics, chemistry, biology, and energy sciences. Traditional nonlinear crystals have weak nonlinear responses and… (more)

▼ Frequency mixing is an essential nonlinear process with extensive applications in photonics, chemistry, biology, and energy sciences. Traditional nonlinear crystals have weak nonlinear responses and light beams need long propagation distances in the crystals to accumulate a significant wave mixing in practice. However, wave mixing in such bulky crystals results in stringent phase-matching requirements and bulk nonlinear crystals are not compatible with modern “flat” optics concept that enables complete control of the phase-front of the output beam but requires optical medium with subwavelength thickness. Fortunately, the emerging of metasurfaces has provided an efficient method to generate the large nonlinear response on nanoscale. The metasurfaces have enabled the development of “flat” optical elements with the intrinsic benefit of small thickness, intricate control of the optical wavefront, and, in case of nonlinear optical elements, relaxed phase-matching constraints. In my Ph.D. dissertation, I focus on the second-order intersubband polaritonic nonlinear metasurfaces. These structures combine enormous intersubband nonlinear response in III-V semiconductor heterostructures and field enhancement of plasmonic nano-resonators. Our earlier research has demonstrated giant nonlinear responses for the second harmonic generation in metasurfaces. In this dissertation, I propose several approaches to improve the performance of second harmonic generation metasurfaces and extend their functionality to difference-frequency and sum-frequency generation in the mid-infrared range. For the first part of this study, I have demonstrated new multiquantum-well designs for second harmonic generation with materials have much narrower linewidth compared with previous materials. This leads to a conversion efficiency of 1.2%. Second, I have demonstrated the mid-infrared difference-frequency generation in polaritonic nonlinear metasurface for the first time. The optimization of the metasurface, the theoretical investigation of the saturation effect, the fabrication of the metasurface, and the experimental characterization of the metasurface have been discussed. The effective nonlinear susceptibility is 340 nm/V and the differencefrequency generation conversion efficiency of this metasurface is 0.13%. I have also demonstrated the mid-infrared sum-frequency generation in a polaritonic nonlinear metasurface. Both the theoretical analysis of the saturation effect and the experimental characterization of the metasurface have been illustrated. The upconversion efficiency of this metasurface is 0.03% and the nonlinear susceptibility is 158 nm/V. In addition, as the prospect of the SFG metasurfaces, the performance of metasurfaces under extremely high pump intensity has been discussed and the metasurface designs for high conversion efficiency have been proposed. For the last part of this study, metasurfaces in the THz range have been explored. These metasurfaces are designed to generate 4~6 THz with a difference-frequency generation process… Advisors/Committee Members: Belkin, Mikhail A. (advisor).

Subjects/Keywords: Metasurface; Frequency mixing; Nonlinear optics

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APA (6^th Edition):

Liu, Yingnan, P. D. (2020). Second-order nonlinear intersubband polaritonic metasurfaces. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://dx.doi.org/10.26153/tsw/8127

Chicago Manual of Style (16^th Edition):

Liu, Yingnan, Ph D. “Second-order nonlinear intersubband polaritonic metasurfaces.” 2020. Doctoral Dissertation, University of Texas – Austin. Accessed April 13, 2021. http://dx.doi.org/10.26153/tsw/8127.

MLA Handbook (7^th Edition):

Liu, Yingnan, Ph D. “Second-order nonlinear intersubband polaritonic metasurfaces.” 2020. Web. 13 Apr 2021.

Vancouver:

Liu, Yingnan PD. Second-order nonlinear intersubband polaritonic metasurfaces. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2020. [cited 2021 Apr 13]. Available from: http://dx.doi.org/10.26153/tsw/8127.

Council of Science Editors:

Liu, Yingnan PD. Second-order nonlinear intersubband polaritonic metasurfaces. [Doctoral Dissertation]. University of Texas – Austin; 2020. Available from: http://dx.doi.org/10.26153/tsw/8127

King Abdullah University of Science and Technology

7. Lin, Ronghui. Design and topological optimization of nanophotonic devices.

Degree: Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division, 2020, King Abdullah University of Science and Technology

URL: http://hdl.handle.net/10754/665997

► A central topic in the research of nanophotonics is the geometrical optimization of the nanostructures since the geometries are deeply related to the Mie resonances… (more)

▼ A central topic in the research of nanophotonics is the geometrical optimization of the nanostructures since the geometries are deeply related to the Mie resonances and the localized surface plasmon resonances in dielectric and metallic nanomaterials. When many nanostructures are assembled to form a metamaterial, the tuning of the geometrical parameters can bring even more profound effects, such as bound states in the continuum (BIC) with infinite quality factors (Q factors). Moreover, with the development of nanofabrication technologies, there is a trend of integrating nanostructures in the vertical direction, which provides more degrees of freedom for controlling the device performance and functionality. The main topic of this dissertation is to explore some of the abovementioned tuning possibilities to enhance the performance of nanophotonic devices. The dissertation contains two major parts: In chapters 2 and 3, the vertical integration of metalenses is studied. We discover a phenomenon similar to the Moiré effect in the bilayer Pancharatnam-Berry phase metalenses and reveal the role of geometrical imperfections on the focusing performance of reflective metalenses. Novel multifocal and reflective metalenses, with smaller footprints and enhanced performance compared to their bulky conventional counterparts, are designed based on the theoretical findings. The study of geometrical imperfections also provides guidelines for analyzing and compensating the fabrication errors, which is vital for large scale production and commercialization of metalenses. In chapters 4 and 5, we use machine learning to harness the full tuning power of the complicated geometries, which is challenging with conventional design methods. Plasmonic metasurfaces with on-demand optical responses are designed by manipulating the coupling of multiple nanodisks using neural networks. An accuracy of ± 8 nm is achieved, which is higher than previous reports and close to the fabrication limits of nanofabrication technologies. We also demonstrate, for the first time, the control of multiple BIC states using freeform geometries with predefined symmetry. It is a new method to exploit the untapped potential of freeform photonics structures. The discoveries we have made in both dielectric and plasmonic nanophotonic devices could benefit applications such as imaging, sensing, and light-emitting devices. Advisors/Committee Members: Li, Xiaohang (advisor), Li, Xiaohang (committee member), Fratalocchi, Andrea (committee member), Liberale, Carlo (committee member), Lu, Tien-Chang (committee member).

Subjects/Keywords: nanophotonics; optimization methods; metalens; metasurface

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APA (6^th Edition):

Lin, R. (2020). Design and topological optimization of nanophotonic devices. (Thesis). King Abdullah University of Science and Technology. Retrieved from http://hdl.handle.net/10754/665997

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):

Lin, Ronghui. “Design and topological optimization of nanophotonic devices.” 2020. Thesis, King Abdullah University of Science and Technology. Accessed April 13, 2021. http://hdl.handle.net/10754/665997.

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

MLA Handbook (7^th Edition):

Lin, Ronghui. “Design and topological optimization of nanophotonic devices.” 2020. Web. 13 Apr 2021.

Vancouver:

Lin R. Design and topological optimization of nanophotonic devices. [Internet] [Thesis]. King Abdullah University of Science and Technology; 2020. [cited 2021 Apr 13]. Available from: http://hdl.handle.net/10754/665997.

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

Council of Science Editors:

Lin R. Design and topological optimization of nanophotonic devices. [Thesis]. King Abdullah University of Science and Technology; 2020. Available from: http://hdl.handle.net/10754/665997

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

University of Arizona

8. 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 (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 April 13, 2021. 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. 13 Apr 2021.

Vancouver:

Ozdemir A. High Efficient Ultra-Thin Flat Optics Based on Dielectric Metasurfaces . [Internet] [Doctoral dissertation]. University of Arizona; 2018. [cited 2021 Apr 13]. 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 California – San Diego

9. 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 April 13, 2021. 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. 13 Apr 2021.

Vancouver:

Kim SW. Engineering of highly efficient metasurfaces for flat optics. [Internet] [Thesis]. University of California – San Diego; 2016. [cited 2021 Apr 13]. 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

University of Toronto

10. 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 April 13, 2021. 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. 13 Apr 2021.

Vancouver:

Wong JPS. Design of Huygens' Metasurfaces for Refraction and Focusing. [Internet] [Masters thesis]. University of Toronto; 2015. [cited 2021 Apr 13]. 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

11. 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 April 13, 2021. http://hdl.handle.net/1807/95626.

MLA Handbook (7^th Edition):

Christian, Philip. “Retroreflective Binary Huygens' Metasurface.” 2018. Web. 13 Apr 2021.

Vancouver:

Christian P. Retroreflective Binary Huygens' Metasurface. [Internet] [Masters thesis]. University of Toronto; 2018. [cited 2021 Apr 13]. 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 Exeter

12. 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 April 13, 2021. http://hdl.handle.net/10871/24304.

MLA Handbook (7^th Edition):

Tremain, Benjamin James. “The microwave response of metasurfaces.” 2016. Web. 13 Apr 2021.

Vancouver:

Tremain BJ. The microwave response of metasurfaces. [Internet] [Doctoral dissertation]. University of Exeter; 2016. [cited 2021 Apr 13]. 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 Toronto

13. Liang, Liang. Design of Ultra-wideband Reflectors.

Degree: PhD, 2016, University of Toronto

URL: http://hdl.handle.net/1807/73046

► It is well-known that reflectarrays typically have a narrow bandwidth which is commonly attributed to the resonant nature of the antenna elements used and the… (more)

▼ It is well-known that reflectarrays typically have a narrow bandwidth which is commonly attributed to the resonant nature of the antenna elements used and the narrow bandwidth of the phase shifting networks used. Typical approaches to increase the bandwidth include the use of true-time-delay (TTD) devices, coupling multiple resonances together, stacking multiple layer of scatterers or the use of numerical optimization techniques. While these approaches have been shown to improve the bandwidth of reflectarrays, the upper bound remains at approximately 40 in fractional bandwidth. This thesis investigates how ultra-wideband reflectors can be designed using novel approaches going beyond the conventional approaches listed above. Specifically, we investigate two new methods to design reflectarrays. In the first method, the reflector is designed as a Transformation Optics (TO) device and in the second method, the reflector is designed as a metasurface. The TO method amounts to manipulating of electromagnetic waves using an appropriate set of material parameters such that the wave propagation inside the material behaves in a desired manner. We use TO as a means to design an ultra-wideband reflector and draw insights into the practical considerations associated with designing such a reflector. In the second method, we design a reflectarray as a metasurface. Traditionally, reflectarrays are considered to be an array of individual antenna elements with no surface properties typically defined. A metasurface often has homogenized surface properties such as surface impedance and admittance which are realized by sub-wavelength elements that make up the reflector. A novel method to design ultra-wideband reflector using a metasurface is derived from first principles and it is shown that the designed reflector exhibits excellent characteristics over a very wide band of frequencies. The advantages and disadvantages of the reflectors designed using each of these two methods are discussed. A comparison of our metasurface is made to a state-of-the-art wideband reflectarray. Advisors/Committee Members: Hum, Sean V, Electrical and Computer Engineering.

Subjects/Keywords: antenna array; metasurface; reflectarray; wideband reflector; 0544

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APA (6^th Edition):

Liang, L. (2016). Design of Ultra-wideband Reflectors. (Doctoral Dissertation). University of Toronto. Retrieved from http://hdl.handle.net/1807/73046

Chicago Manual of Style (16^th Edition):

Liang, Liang. “Design of Ultra-wideband Reflectors.” 2016. Doctoral Dissertation, University of Toronto. Accessed April 13, 2021. http://hdl.handle.net/1807/73046.

MLA Handbook (7^th Edition):

Liang, Liang. “Design of Ultra-wideband Reflectors.” 2016. Web. 13 Apr 2021.

Vancouver:

Liang L. Design of Ultra-wideband Reflectors. [Internet] [Doctoral dissertation]. University of Toronto; 2016. [cited 2021 Apr 13]. Available from: http://hdl.handle.net/1807/73046.

Council of Science Editors:

Liang L. Design of Ultra-wideband Reflectors. [Doctoral Dissertation]. University of Toronto; 2016. Available from: http://hdl.handle.net/1807/73046

University of California – San Diego

14. 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 April 13, 2021. 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. 13 Apr 2021.

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 2021 Apr 13]. 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

15. 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 April 13, 2021. 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. 13 Apr 2021.

Vancouver:

Veysi M. Electromagnetic Wavefront Manipulation with Metasurfaces. [Internet] [Thesis]. University of California – Irvine; 2017. [cited 2021 Apr 13]. 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

Duke University

16. Boyarsky, Michael. Metasurface Antennas for Synthetic Aperture Radar .

Degree: 2019, Duke University

URL: http://hdl.handle.net/10161/20124

► Synthetic aperture radar offers unparalleled satellite imaging capabilities for planetary observation. Future systems will realize high resolution with near-real-time revisit rates by using coordinated… (more)

Subjects/Keywords: Electrical engineering; Antennas; Metamaterials; Metasurface antennas; Microwave imaging; Synthetic aperture radar

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APA (6^th Edition):

Boyarsky, M. (2019). Metasurface Antennas for Synthetic Aperture Radar . (Thesis). Duke University. Retrieved from http://hdl.handle.net/10161/20124

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):

Boyarsky, Michael. “Metasurface Antennas for Synthetic Aperture Radar .” 2019. Thesis, Duke University. Accessed April 13, 2021. http://hdl.handle.net/10161/20124.

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

MLA Handbook (7^th Edition):

Boyarsky, Michael. “Metasurface Antennas for Synthetic Aperture Radar .” 2019. Web. 13 Apr 2021.

Vancouver:

Boyarsky M. Metasurface Antennas for Synthetic Aperture Radar . [Internet] [Thesis]. Duke University; 2019. [cited 2021 Apr 13]. Available from: http://hdl.handle.net/10161/20124.

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

Council of Science Editors:

Boyarsky M. Metasurface Antennas for Synthetic Aperture Radar . [Thesis]. Duke University; 2019. Available from: http://hdl.handle.net/10161/20124

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

Penn State University

17. Sieber, Peter Erich. Low-loss Dispersion Engineered Wide-band, Multi-band, And Reconfigurable Anisotropic Metamaterials And Bézier Metasurfaces.

Degree: 2015, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/26631

► For more than a decade, metamaterials have generated significant interest due to their theoretical and later experimentally demonstrated properties that are not observed in nature;… (more)

Subjects/Keywords: metamaterials; antenna; dual band; broad band; RF switch; waveplate; metasurface

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APA (6^th Edition):

Sieber, P. E. (2015). Low-loss Dispersion Engineered Wide-band, Multi-band, And Reconfigurable Anisotropic Metamaterials And Bézier Metasurfaces. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/26631

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):

Sieber, Peter Erich. “Low-loss Dispersion Engineered Wide-band, Multi-band, And Reconfigurable Anisotropic Metamaterials And Bézier Metasurfaces.” 2015. Thesis, Penn State University. Accessed April 13, 2021. https://submit-etda.libraries.psu.edu/catalog/26631.

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

MLA Handbook (7^th Edition):

Sieber, Peter Erich. “Low-loss Dispersion Engineered Wide-band, Multi-band, And Reconfigurable Anisotropic Metamaterials And Bézier Metasurfaces.” 2015. Web. 13 Apr 2021.

Vancouver:

Sieber PE. Low-loss Dispersion Engineered Wide-band, Multi-band, And Reconfigurable Anisotropic Metamaterials And Bézier Metasurfaces. [Internet] [Thesis]. Penn State University; 2015. [cited 2021 Apr 13]. Available from: https://submit-etda.libraries.psu.edu/catalog/26631.

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

Council of Science Editors:

Sieber PE. Low-loss Dispersion Engineered Wide-band, Multi-band, And Reconfigurable Anisotropic Metamaterials And Bézier Metasurfaces. [Thesis]. Penn State University; 2015. Available from: https://submit-etda.libraries.psu.edu/catalog/26631

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

Rice University

18. Zhang, Ming. Titanium Dioxide Metasurface for Vacuum Ultraviolet Third-harmonic Generation.

Degree: MS, Natural Sciences, 2019, Rice University

URL: http://hdl.handle.net/1911/107749

► Vacuum ultraviolet (VUV) light, in the wavelength regime between 100nm and 200nm, is of long-lasting interest in both academia and industry for its strong photon… (more)

Subjects/Keywords: Titanium dioxide; Third-harmonic generation; Vacuum ultraviolet; Metasurface.

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APA (6^th Edition):

Zhang, M. (2019). Titanium Dioxide Metasurface for Vacuum Ultraviolet Third-harmonic Generation. (Masters Thesis). Rice University. Retrieved from http://hdl.handle.net/1911/107749

Chicago Manual of Style (16^th Edition):

Zhang, Ming. “Titanium Dioxide Metasurface for Vacuum Ultraviolet Third-harmonic Generation.” 2019. Masters Thesis, Rice University. Accessed April 13, 2021. http://hdl.handle.net/1911/107749.

MLA Handbook (7^th Edition):

Zhang, Ming. “Titanium Dioxide Metasurface for Vacuum Ultraviolet Third-harmonic Generation.” 2019. Web. 13 Apr 2021.

Vancouver:

Zhang M. Titanium Dioxide Metasurface for Vacuum Ultraviolet Third-harmonic Generation. [Internet] [Masters thesis]. Rice University; 2019. [cited 2021 Apr 13]. Available from: http://hdl.handle.net/1911/107749.

Council of Science Editors:

Zhang M. Titanium Dioxide Metasurface for Vacuum Ultraviolet Third-harmonic Generation. [Masters Thesis]. Rice University; 2019. Available from: http://hdl.handle.net/1911/107749

Duke University

19. Li, Junfei. Highly Efficient Wavefront Transformation with Acoustic Metasurfaces .

Degree: 2020, Duke University

URL: http://hdl.handle.net/10161/21044

► Metamaterials are artificially engineered materials or structures that exhibit exotic properties that are not found in nature. They have been serving as a primary… (more)

▼ Metamaterials are artificially engineered materials or structures that exhibit exotic properties that are not found in nature. They have been serving as a primary approach to fully control the behavior of electromagnetic waves, acoustic waves and elastic waves in recent years, and is at present a highly active research area. Metasurfaces, as the 2D version of metamaterials, have opened up unprecedented possibilities for controlling waves at will, offering a solution of molding wave propagation within a thin sheet of structures. Most metasurface designs are based on the so-called generalized Snell's Law (GSL) which achieves their functionalities by engineering the local phase shift in the unit cells. However, the efficiency of phase-gradient metasurfaces is fundamentally limited by the impedance mismatch and local porer flow mismatch between incident field and reflected/transmitted field, so that part of the energy is scattered into unwanted higher-order diffracted modes, which hinders the applicability in various scenarios. In this work, we approach these issues by exploiting acoustic bianisotropy (Willis coupling for acoustics) as an additional degree of freedom to control waves. We have explored highly efficient wavefront engineering in airborne acoustics, from manipulating simple plane waves and cylindrical harmonics to more complicated fields and finally, arbitrary wavefronts. Then we extended the application of bianisotropic metasurfaces to general impedance matching problems and demonstrated wavefront engineering in underwater acoustics with two examples: an aberration-layer penetration metasurface and a 3D acoustic tweezer. This dissertation provides a summary of the work undertaken to achieve highly efficient and functional wavefront engineering devices, and briefly outlines some objectives for future work. Firstly, we designed an acoustic bianisotropic unit cell with full control over its scattering properties and demonstrated bianisotropic metasurfaces that overcome the fundamental limits of phase-gradient based metasurfaces. Second, we mapped the approach from Cartesian coordinates into cylindrical coordinates and demonstrated the generation of a pure field with high angular momentum. Third, we introduced surface waves to help power redistribution along the metasurface and achieved highly-efficient beam splitting and reflection. Forth, we further introduced the power-flow conformal metasurface to meet the power balance requirements for an arbitrary perfect wavefront transformation. Then we extended the application of bianisotropic metasurfaces and proposed a general impedance matching strategy, and demonstrated the idea with a case of aberration-layer penetration in water. Last but not least, by shaping the wavefront of underwater ultrasound, a 3D acoustic tweezer is demonstrated for manipulating a wide range of particles in a contact-less manner. Advisors/Committee Members: Cummer, Steven A (advisor).

Subjects/Keywords: Engineering; Acoustics; Electromagnetics; Bianisotropic; Highly-efficient; Metasurface; Tweezer

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APA (6^th Edition):

Li, J. (2020). Highly Efficient Wavefront Transformation with Acoustic Metasurfaces . (Thesis). Duke University. Retrieved from http://hdl.handle.net/10161/21044

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, Junfei. “Highly Efficient Wavefront Transformation with Acoustic Metasurfaces .” 2020. Thesis, Duke University. Accessed April 13, 2021. http://hdl.handle.net/10161/21044.

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, Junfei. “Highly Efficient Wavefront Transformation with Acoustic Metasurfaces .” 2020. Web. 13 Apr 2021.

Vancouver:

Li J. Highly Efficient Wavefront Transformation with Acoustic Metasurfaces . [Internet] [Thesis]. Duke University; 2020. [cited 2021 Apr 13]. Available from: http://hdl.handle.net/10161/21044.

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

Council of Science Editors:

Li J. Highly Efficient Wavefront Transformation with Acoustic Metasurfaces . [Thesis]. Duke University; 2020. Available from: http://hdl.handle.net/10161/21044

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

Australian National University

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

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 April 13, 2021. 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. 13 Apr 2021.

Vancouver:

Wang L. Advanced Wavefront Control with Linear and Nonlinear Metasurfaces . [Internet] [Thesis]. Australian National University; 2018. [cited 2021 Apr 13]. 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

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

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 April 13, 2021. 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. 13 Apr 2021.

Vancouver:

Komar A. Tunable All-dielectric Metasurfaces: Fundamentals and Applications . [Internet] [Thesis]. Australian National University; 2018. [cited 2021 Apr 13]. 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

University of Washington

22. 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 April 13, 2021. 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. 13 Apr 2021.

Vancouver:

Hong C. Meta-form near eye visor. [Internet] [Thesis]. University of Washington; 2017. [cited 2021 Apr 13]. 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 Washington

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

Degree: PhD, 2019, University of Washington

URL: http://hdl.handle.net/1773/44886

► 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/1773/44886

Chicago Manual of Style (16^th Edition):

Zhan, Alan. “Design and Optimization of Dielectric Metasurface Optics.” 2019. Doctoral Dissertation, University of Washington. Accessed April 13, 2021. http://hdl.handle.net/1773/44886.

MLA Handbook (7^th Edition):

Zhan, Alan. “Design and Optimization of Dielectric Metasurface Optics.” 2019. Web. 13 Apr 2021.

Vancouver:

Zhan A. Design and Optimization of Dielectric Metasurface Optics. [Internet] [Doctoral dissertation]. University of Washington; 2019. [cited 2021 Apr 13]. Available from: http://hdl.handle.net/1773/44886.

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/1773/44886

University of Washington

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

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 April 13, 2021. http://hdl.handle.net/1773/44427.

MLA Handbook (7^th Edition):

Zhan, Alan. “Design and Optimization of Dielectric Metasurface Optics.” 2019. Web. 13 Apr 2021.

Vancouver:

Zhan A. Design and Optimization of Dielectric Metasurface Optics. [Internet] [Doctoral dissertation]. University of Washington; 2019. [cited 2021 Apr 13]. 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

Delft University of Technology

25. Andrašec, Josip (author). A metasurface-based miniaturized spectropolarimeter design.

Degree: 2019, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:7acfb65e-97ef-4e8e-89ca-84b7749c2760

► This research is focused on the feasibility assessment of a novel technology of metasurfaces in order to design a spectropolarimeter with the thickness of a… (more)

▼ This research is focused on the feasibility assessment of a novel technology of metasurfaces in order to design a spectropolarimeter with the thickness of a few micrometers integrated on the detector array. The motivation behind the research is miniaturization of state-of-the-art spectropolarimeters. The requirements for the instrument are derived from SPEXone instrument, as a reference instrument. Beside the miniaturization, two additional requirements are set as a goal: possibility to measure full-Stokes vector of polarization (including circular polarization), and to improve the spectropolarimetric resolution. The reduction in the volume of the instrument is not the main advantage, but also reduction in the number of optical components with respect to the state-of-the-art. A spectropolarimeter with fewer components allows better stability of performances over different external conditions like temperature change, and easier alignment of the whole system. In recent years the dielectric metasurfaces attract a lot of attention. Firstly, due to its compatibility to CMOS detector technology, which allows integration of thin layers of metasurfaces directly on the detector array, and secondly due to high transmission of the dielectric materials. The metasurface is an array of scatterers with period and size of scatterers smaller than the wavelength. With proper design, the complete control of electromagnetic waves is possible, including amplitude, phase, and polarization at subwavelength resolution. This is convenient because diffraction is not present at that scale. That enables to design optical devices like lenses, waveplates, polarizing beam splitters with similar performances as current technology, but with extreme reduction in thickness. In this thesis, a systematic electromagnetic performance analysis of metasurfaces is presented. Two types of metasurfaces are designed, first acting as a waveplate, and second as a linear polarizer at different spectral wavelengths. Also, a trade-off of the most suitable spectropolarimetric techniques is done, which led to the Division of Focal Plane (DoFP) type of polarimeter. The combination of these two layers of metasurfaces can modulate the polarization state of light in form of the intensity of light, which is measured on detector pixels. It is shown that with this technique, four unique pixels, each with different polarization modulation, are required to reconstruct four unknowns, the Stokes vector, which fully describes the state of polarization of incident light. Furthermore, the spectral information is measured by designing different sets of four pixels to filter out different parts of the spectrum. The result is two-dimensional detector array which measures spectrum in the vertical axis, and spatial information in the horizontal axis. The spatial information in the vertical axis is achieved by implementing the push broom concept of a satellite. Moreover, the important spectropolarimetric parameters like spectropolarimetric accuracy, spectropolarimetric resolution,… Advisors/Committee Members: Kuiper, Hans (mentor), Gerini, Giampiero (mentor), Delft University of Technology (degree granting institution).

Subjects/Keywords: metasurface; spectropolarimeter; spectropolarimetry; waveplate; Fabry–Pérot filter; remote sensing

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

APA (6^th Edition):

Andrašec, J. (. (2019). A metasurface-based miniaturized spectropolarimeter design. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:7acfb65e-97ef-4e8e-89ca-84b7749c2760

Chicago Manual of Style (16^th Edition):

Andrašec, Josip (author). “A metasurface-based miniaturized spectropolarimeter design.” 2019. Masters Thesis, Delft University of Technology. Accessed April 13, 2021. http://resolver.tudelft.nl/uuid:7acfb65e-97ef-4e8e-89ca-84b7749c2760.

MLA Handbook (7^th Edition):

Andrašec, Josip (author). “A metasurface-based miniaturized spectropolarimeter design.” 2019. Web. 13 Apr 2021.

Vancouver:

Andrašec J(. A metasurface-based miniaturized spectropolarimeter design. [Internet] [Masters thesis]. Delft University of Technology; 2019. [cited 2021 Apr 13]. Available from: http://resolver.tudelft.nl/uuid:7acfb65e-97ef-4e8e-89ca-84b7749c2760.

Council of Science Editors:

Andrašec J(. A metasurface-based miniaturized spectropolarimeter design. [Masters Thesis]. Delft University of Technology; 2019. Available from: http://resolver.tudelft.nl/uuid:7acfb65e-97ef-4e8e-89ca-84b7749c2760

26. Garner, Corey Isaac. Experimental Validation Of Metasurface Cloak For Dielectric Cylinder At Mircowave Frequencies.

Degree: M.S. in Engineering Science, Electrical Engineering, 2015, University of Mississippi

URL: https://egrove.olemiss.edu/etd/519

Subjects/Keywords: Cloaking; Metasurface; Electromagnetics and Photonics

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APA (6^th Edition):

Garner, C. I. (2015). Experimental Validation Of Metasurface Cloak For Dielectric Cylinder At Mircowave Frequencies. (Thesis). University of Mississippi. Retrieved from https://egrove.olemiss.edu/etd/519

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):

Garner, Corey Isaac. “Experimental Validation Of Metasurface Cloak For Dielectric Cylinder At Mircowave Frequencies.” 2015. Thesis, University of Mississippi. Accessed April 13, 2021. https://egrove.olemiss.edu/etd/519.

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

MLA Handbook (7^th Edition):

Garner, Corey Isaac. “Experimental Validation Of Metasurface Cloak For Dielectric Cylinder At Mircowave Frequencies.” 2015. Web. 13 Apr 2021.

Vancouver:

Garner CI. Experimental Validation Of Metasurface Cloak For Dielectric Cylinder At Mircowave Frequencies. [Internet] [Thesis]. University of Mississippi; 2015. [cited 2021 Apr 13]. Available from: https://egrove.olemiss.edu/etd/519.

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

Council of Science Editors:

Garner CI. Experimental Validation Of Metasurface Cloak For Dielectric Cylinder At Mircowave Frequencies. [Thesis]. University of Mississippi; 2015. Available from: https://egrove.olemiss.edu/etd/519

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

University of Melbourne

27. 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 April 13, 2021. http://hdl.handle.net/11343/129429.

MLA Handbook (7^th Edition):

Achmari, Panji. “Characterisation of sub-radiant modes of metasurfaces.” 2016. Web. 13 Apr 2021.

Vancouver:

Achmari P. Characterisation of sub-radiant modes of metasurfaces. [Internet] [Masters thesis]. University of Melbourne; 2016. [cited 2021 Apr 13]. 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

Duke University

28. 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 (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 April 13, 2021. 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. 13 Apr 2021.

Vancouver:

Liu X. modeling and application of nonlinear metasurface . [Internet] [Thesis]. Duke University; 2018. [cited 2021 Apr 13]. 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

Boston University

29. Ghaffarivardavagh, Reza. Tailoring acoustic waves with metamaterials and metasurfaces.

Degree: PhD, Mechanical Engineering, 2019, Boston University

URL: http://hdl.handle.net/2144/37109

► Nowadays, metamaterials have found their places in different branches of wave physics ranging from electromagnetics to acoustic waves. Acoustic metamaterials are sub-wavelength structures in which… (more)

▼ Nowadays, metamaterials have found their places in different branches of wave physics ranging from electromagnetics to acoustic waves. Acoustic metamaterials are sub-wavelength structures in which their effective acoustic properties are dominated by their structural shape rather than their constitutive materials. In recent years, acoustic metamaterials have gained increasing interest due to numerous promising applications such as sub-wavelength imaging, perfect absorption, acoustic cloaking, etc. The focus of the work herein is to leverage acoustic metamaterial/metasurface structures to manipulate the acoustic wavefront to pave the road for future applications of the metamaterials. In the first part of the work, the metamaterial structure is introduced, which can be leveraged for better manipulation of the transmitted wave by modulating both phase and amplitude. Initially, a general bound on the transmission phase/amplitude space for the case of arbitrary metasurface has been presented and subsequently, the necessary condition for the complete modulation of the transmitted wave is investigated. Next, a horn-like space coiling metamaterial is introduced, which satisfied the aforementioned condition and enabled us to simultaneously modulate both the phase and amplitude of the transmitted wave. Furthermore, our initial efforts toward designing a metamaterial capable of real-time phase modulation with relatively constant amplitude will be discussed. In the second part of this work, a novel metamaterial-based methodology is presented for the design of the air-permeable acoustic silencer. In this work, the concept of the bilayer-transverse metamaterial is introduced, and its functionality for silencing the acoustic wave is demonstrated. Furthermore, it is shown that the methodology presented herein essentially does not limit the ratio of the open area, and ultra-open metamaterial silencers may be designed. Eventually, based on the presented methodology, the ultra-open metamaterial featuring nearly 60% open area is designed, and silencing capacity of about 94% at the targeted frequency is experimentally realized. In the last part of this work, the behavior of a locally resonant class of acoustic metamaterial in the non-Rayleigh regime has been explored. Elaborately, it is demonstrated that in the case of spherical inclusion in a matrix material, large variation in the effective acoustic impedance emerges near the inclusion’s Eigenmode. Eventually, the potential application of this novel phenomenon in the non-destructive evaluation (NDE) and ultrasound imaging is discussed. Advisors/Committee Members: Zhang, Xin (advisor).

Subjects/Keywords: Acoustics; Metamaterials; Metasurface; NDE; Silencer; Ultra-open; Wavefront

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APA (6^th Edition):

Ghaffarivardavagh, R. (2019). Tailoring acoustic waves with metamaterials and metasurfaces. (Doctoral Dissertation). Boston University. Retrieved from http://hdl.handle.net/2144/37109

Chicago Manual of Style (16^th Edition):

Ghaffarivardavagh, Reza. “Tailoring acoustic waves with metamaterials and metasurfaces.” 2019. Doctoral Dissertation, Boston University. Accessed April 13, 2021. http://hdl.handle.net/2144/37109.

MLA Handbook (7^th Edition):

Ghaffarivardavagh, Reza. “Tailoring acoustic waves with metamaterials and metasurfaces.” 2019. Web. 13 Apr 2021.

Vancouver:

Ghaffarivardavagh R. Tailoring acoustic waves with metamaterials and metasurfaces. [Internet] [Doctoral dissertation]. Boston University; 2019. [cited 2021 Apr 13]. Available from: http://hdl.handle.net/2144/37109.

Council of Science Editors:

Ghaffarivardavagh R. Tailoring acoustic waves with metamaterials and metasurfaces. [Doctoral Dissertation]. Boston University; 2019. Available from: http://hdl.handle.net/2144/37109

University of Pennsylvania

30. 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 April 13, 2021. 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. 13 Apr 2021.

Vancouver:

Chen W. Designing Plasmonic Materials And Optical Metasurfaces For Light Manipulation And Optical Sensing. [Internet] [Thesis]. University of Pennsylvania; 2017. [cited 2021 Apr 13]. 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

Open Access Theses and Dissertations