Browsing by Subject "Metamaterials"
Now showing items 1-14 of 14
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Advances in Complex Electromagnetic Media
(2009)Complex artificial materials (metamaterials) strongly interact with light and can be used to fabricate structures which mimic a material response that has no natural equivalent. Classical tools for the design of optical ... -
Analytical Modeling of Waveguide-fed Metasurfaces for Microwave Imaging and Beamforming
(2018)A waveguide-fed metasurface consists of an array of metamaterial elements excited by a guided mode. When the metamaterial elements are excited, they in turn leak out a portion of the energy traveling through the waveguide ... -
Coherence in Dynamic Metasurface Aperture Microwave Imaging Systems
(2020)Microwave imaging systems often utilize electrically large arrays for remote characterization of spatial and spectral content. Image reconstruction involves computational processing, the success of which depends on adequate ... -
Design and Applications of Frequency Tunable and Reconfigurable Metamaterials
(2009)The field of metamaterials has gained much attention within the scientific community over the past decade. With continuing advances and discoveries leading the way to practical applications, metamaterials have earned the ... -
Design, Analysis, And Characterization Of Metamaterial Quasi-Optical Components For Millimeter-Wave Automotive Radar
(2013)Since their introduction by Mercedes Benz in the late 1990s, W-band radars operating at 76-77 GHz have found their way into more and more passenger cars. These automotive radars are typically used in adaptive cruise control, ... -
Dynamic Metamaterials for Far-Infrared Imaging and Spectroscopy
(2019)As early as 1949, it was predicted that a technological gap would form in the far infrared. This so-called ``terahertz gap" is the result of two limitations. On one side, the atomic phenomena giving rise to laser technologies ... -
Dynamic Metasurface Apertures for Computational Imaging
(2018)Microwave imaging platforms conventionally take the form of antenna arrays or synthetic apertures. Inspired by methods in the optical regime, computational microwave imaging has recently taken hold as an alternative approach ... -
Electromagnetic Metamaterials for Antenna Applications
(2010)This dissertation examines the use of artificial structured materials -- known as metamaterials -- in two antenna applications in which conventional dielectric materials are otherwise used. In the first application, the ... -
Infrared Metamaterials for Diffractive Optics
(2013)Intense developments in optical metamaterials have led to a renaissance in several optics fields. Metamaterials, artificially structured media, provide several additional degrees of freedom that cannot be accessed ... -
Metamaterial Control of Thermal Radiation
(2017)The observation and use of thermal radiation has a long history. Significant advance was made in 1879 when Josef Stefan found that “the total radiated power per unit surface area of a black body across all wavelengths is ... -
Metamaterial Designs for Applications in Wireless Power Transfer and Computational Imaging
(2015)The advent of resonant metamaterials with strongly dispersive behavior allowed scientists to design new electromagnetic devices -- including (but not limited to) absorbers, antennas, lenses, holograms, and arguably the most ... -
Metamaterials for Computational Imaging
(2013)Metamaterials extend the design space, flexibility, and control of optical material systems and so yield fundamentally new computational imaging systems. A computational imaging system relies heavily on the design of measurement ... -
Metasurface Antennas for Synthetic Aperture Radar
(2019)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 satellites, but their ... -
Theory and design of nonlinear metamaterials
(2013)If electronics are ever to be completely replaced by optics, a significant possibility in the wake of the fiber revolution, it is likely that nonlinear materials will play a central and enabling role. Indeed, nonlinear optics ...
