Design of All-dielectric Metasurfaces for Vacuum Ultraviolet Applications

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dc.contributor.advisorNordlander, Peteren_US
dc.creatorZhang, Mingen_US
dc.date.accessioned2020-12-04T14:51:50Zen_US
dc.date.available2021-12-01T06:01:11Zen_US
dc.date.created2020-12en_US
dc.date.issued2020-12-04en_US
dc.date.submittedDecember 2020en_US
dc.date.updated2020-12-04T14:51:50Zen_US
dc.description.abstractThe last decade witnessed a surge in applications of all-dielectric metasurfaces. Compared to traditional plasmonic materials, low-loss, high-refractive-index dielectric materials can generate strong local electric field enhancement while maintaining low optical absorption, thus providing new possibilities in various applications, such as imaging, nonlinear generation, and biosensing. In this thesis, we explore the potential of all-dielectric metasurfaces in two aspects. In the first part of this thesis, we demonstrate two novel nonlinear all-dielectric metasurface designs in the vacuum ultraviolet (VUV) region: a titanium dioxide (TiO2) metasurface that provides enhanced third harmonic generation at 185 nm by an anapole resonance near the fundamental wavelength of 555 nm, and an ultracompact zinc oxide (ZnO) metalens that effectively converts a 394-nm wave into converging 197-nm light via second harmonic generation. In the second part of the thesis, we introduce a new automated nanodevice design (inverse design) platform based on the discrete dipole approximation method (DDA) and optimization theories. With given performance metrics, this computational platform is capable of efficiently searching for optimal nanodevice geometries without intensive human labor, thus illustrating a promising strategy for designing large-scale, multifunctional all-dielectric metasurfaces.en_US
dc.embargo.terms2021-12-01en_US
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationZhang, Ming. "Design of All-dielectric Metasurfaces for Vacuum Ultraviolet Applications." (2020) Diss., Rice University. <a href="https://hdl.handle.net/1911/109611">https://hdl.handle.net/1911/109611</a>.en_US
dc.identifier.urihttps://hdl.handle.net/1911/109611en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.subjectVacuum Ultravioleten_US
dc.subjectDielectricen_US
dc.subjectMetasurfaceen_US
dc.subjectMetalensen_US
dc.subjectInverse designen_US
dc.titleDesign of All-dielectric Metasurfaces for Vacuum Ultraviolet Applicationsen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentApplied Physicsen_US
thesis.degree.disciplineNatural Sciencesen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelDoctoralen_US
thesis.degree.nameDoctor of Philosophyen_US
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