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Browsing by Author "Everitt, Henry O"
Now showing items 1-10 of 10
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Adaptive millimeter-wave synthetic aperture imaging for compressive sampling of sparse scenes.
(Opt Express, 2014-06-02)We apply adaptive sensing techniques to the problem of locating sparse metallic scatterers using high-resolution, frequency modulated continuous wave W-band RADAR. Using a single detector, a frequency stepped source, and ... -
Aluminum for plasmonics.
(ACS Nano, 2014-01-28)Unlike silver and gold, aluminum has material properties that enable strong plasmon resonances spanning much of the visible region of the spectrum and into the ultraviolet. This extended response, combined with its natural ... -
Compressive sensing and adaptive sampling applied to millimeter wave inverse synthetic aperture imaging
(Optics Express, 2017-02-06)© 2017 Optical Society of America.In order to improve speed and efficiency over traditional scanning methods, a Bayesian compressive sensing algorithm using adaptive spatial sampling is developed for single detector millimeter ... -
Extraordinary Light-Induced Local Angular Momentum near Metallic Nanoparticles.
(ACS Nano, 2016-04-26)The intense local field induced near metallic nanostructures provides strong enhancements for surface-enhanced spectroscopies, a major focus of plasmonics research over the past decade. Here we consider that plasmonic ... -
Gallium plasmonics: deep subwavelength spectroscopic imaging of single and interacting gallium nanoparticles.
(ACS Nano, 2015-02-24)Gallium has recently been demonstrated as a phase-change plasmonic material offering UV tunability, facile synthesis, and a remarkable stability due to its thin, self-terminating native oxide. However, the dense irregular ... -
How an oxide shell affects the ultraviolet plasmonic behavior of Ga, Mg, and Al nanostructures.
(Opt Express, 2016-09-05)The ultraviolet (UV) range presents new challenges for plasmonics, with interesting applications ranging from engineering to biology. In previous research, gallium, aluminum, and magnesium were found to be very promising ... -
Optical characterization of electron-phonon interactions at the saddle point in graphene.
(Phys Rev Lett, 2014-05-09)The role of many-body interactions is experimentally and theoretically investigated near the saddle point absorption peak of graphene. The time and energy-resolved differential optical transmission measurements reveal the ... -
Photoluminescence Mechanism and Photocatalytic Activity of Organic-Inorganic Hybrid Materials Formed by Sequential Vapor Infiltration.
(Langmuir, 2016-05-03)Organic-inorganic hybrid materials formed by sequential vapor infiltration (SVI) of trimethylaluminum into polyester fibers are demonstrated, and the photoluminescence of the fibers is evaluated using a combined UV-vis and ... -
Rhodium nanoparticles for ultraviolet plasmonics.
(Nano Lett, 2015-02-11)The nonoxidizing catalytic noble metal rhodium is introduced for ultraviolet plasmonics. Planar tripods of 8 nm Rh nanoparticles, synthesized by a modified polyol reduction method, have a calculated local surface plasmon ... -
Wide bandwidth, millimeter-resolution inverse synthetic aperture radar imaging
(Journal of the Optical Society of America A: Optics and Image Science, and Vision, 2017-07-01)© 2017 Optical Society of America The combination of wide bandwidth W-band inverse synthetic aperture radar imagery and high-fidelity numerical simulations has been used to identify distinguishing signatures from simple ...
