Search Results - "Povinelli, Michelle L."

Generalized multi-channel scheme for secure image encryption by Audhkhasi, Romil, Povinelli, Michelle L.

“…The ability of metamaterials to manipulate optical waves in both the spatial and spectral domains has provided new opportunities for image encoding. Combined…”
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Electrical and Optical Characterization of Surface Passivation in GaAs Nanowires by Chang, Chia-Chi, Chi, Chun-Yung, Yao, Maoqing, Huang, Ningfeng, Chen, Chun-Chung, Theiss, Jesse, Bushmaker, Adam W, LaLumondiere, Stephen, Yeh, Ting-Wei, Povinelli, Michelle L, Zhou, Chongwu, Dapkus, P. Daniel, Cronin, Stephen B

“…We report a systematic study of carrier dynamics in Al x Ga1–x As-passivated GaAs nanowires. With passivation, the minority carrier diffusion length (L diff)…”
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Experimental demonstration of dynamic thermal regulation using vanadium dioxide thin films by Morsy, Ahmed M., Barako, Michael T., Jankovic, Vladan, Wheeler, Virginia D., Knight, Mark W., Papadakis, Georgia T., Sweatlock, Luke A., Hon, Philip W. C., Povinelli, Michelle L.

“…We present an experimental demonstration of passive, dynamic thermal regulation in a solid-state system with temperature-dependent thermal emissivity…”
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Full Spectral Image Encryption in the Infrared using an Electrically Reconfigurable Metasurface and a Matched Detector by Audhkhasi, Romil, Povinelli, Michelle L.

“…The ability of metasurfaces to manipulate optical waves in the spatial and spectral domain provides new avenues for secure data storage. In this work, an…”
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Light-Assisted, Templated Self-Assembly Using a Photonic-Crystal Slab by Jaquay, Eric, Martínez, Luis Javier, Mejia, Camilo A, Povinelli, Michelle L

“…We experimentally demonstrate the technique of light-assisted, templated self-assembly (LATS). We excite a guided-resonance mode of a photonic-crystal slab…”
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Highly selective ultraviolet aluminum plasmonic filters on silicon by Morsy, Ahmed M, Povinelli, Michelle L, Hennessy, John

“…We report the use of aluminum patterning to make highly selective UV bandpass filters. We design and fabricate a periodic array of nanoholes in Al thin film on…”
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The dynamics of giant unilamellar vesicle oxidation probed by morphological transitions by Sankhagowit, Shalene, Wu, Shao-Hua, Biswas, Roshni, Riche, Carson T., Povinelli, Michelle L., Malmstadt, Noah

“…We have studied the dynamics of Lissamine Rhodamine B dye sensitization-induced oxidation of 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC) giant unilamellar…”
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Toward Optimized Light Utilization in Nanowire Arrays Using Scalable Nanosphere Lithography and Selected Area Growth by Madaria, Anuj R, Yao, Maoqing, Chi, ChunYung, Huang, Ningfeng, Lin, Chenxi, Li, Ruijuan, Povinelli, Michelle L, Dapkus, P. Daniel, Zhou, Chongwu

“…Vertically aligned, catalyst-free semiconducting nanowires hold great potential for photovoltaic applications, in which achieving scalable synthesis and…”
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Effect of aperiodicity on the broadband reflection of silicon nanorod structures for photovoltaics by Lin, Chenxi, Huang, Ningfeng, Povinelli, Michelle L

“…We carry out a systematic numerical study of the effects of aperiodicity on silicon nanorod anti-reflection structures. We use the scattering matrix method to…”
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Enhanced and selective optical trapping in a slot-graphite photonic crystal by Krishnan, Aravind, Huang, Ningfeng, Wu, Shao-Hua, Martínez, Luis Javier, Povinelli, Michelle L

“…Applicability of optical trapping tools for nanomanipulation is limited by the available laser power and trap efficiency. We utilized the strong confinement of…”
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Light-Assisted, Templated Self-Assembly of Gold Nanoparticle Chains by Jaquay, Eric, Martínez, Luis Javier, Huang, Ningfeng, Mejia, Camilo A, Sarkar, Debarghya, Povinelli, Michelle L

“…We experimentally demonstrate the technique of light-assisted, templated self-assembly (LATS) to trap and assemble 200 nm diameter gold nanoparticles. We…”
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Light-assisted templated self assembly using photonic crystal slabs by Mejia, Camilo A, Dutt, Avik, Povinelli, Michelle L

“…We explore a technique which we term light-assisted templated self-assembly. We calculate the optical forces on colloidal particles over a photonic crystal…”
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Optical absorption enhancement in silicon nanowire arrays with a large lattice constant for photovoltaic applications by Lin, Chenxi, Povinelli, Michelle L

“…In this paper, we use the transfer matrix method to calculate the optical absorptance of vertically-aligned silicon nanowire (SiNW) arrays. For fixed filling…”
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Effects of roughness and resonant-mode engineering in all-dielectric metasurfaces by Yang, Hao, Liu, He, Song, Boxiang, Li, Yuanrui, Meng, Deming, Chen, Buyun, Hu, Pan, Wang, Yunxiang, Ou, Tse-Hsien, Povinelli, Michelle L., Wu, Wei

“…The development of all-dielectric metasurfaces vigorously prompts the applications of optical metasurfaces for the visible and near-IR light range. Compared to…”
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Enhanced Fabry-Perot resonance in GaAs nanowires through local field enhancement and surface passivation by Arab, Shermin, Anderson, P. Duke, Yao, Maoqing, Zhou, Chongwu, Dapkus, P. Daniel, Povinelli, Michelle L., Cronin, Stephen B.

“…We report substantial improvements in the photoluminescence （PL） efficiency and Fabry-Perot （FP） resonance of individual GaAs nanowires through surface…”
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Gold-black phosphorus nanostructured absorbers for efficient light trapping in the mid-infrared by Audhkhasi, Romil, Povinelli, Michelle L.

“…We propose a gold nanostructured design for absorption enhancement in thin black phosphorus films in the 3–5 µm wavelength range. By suitably tuning the design…”
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Spectral emissivity design using aluminum-based hybrid gratings by Audhkhasi, Romil, Povinelli, Michelle L

“…We propose a strategy to design infrared emitters with predefined spectral response using aluminum gratings as building blocks. We begin by identifying 3…”
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Method for tuning absorptivity of a guided-mode resonance grating through period-doubling index perturbation by Ghanekar, Alok, Kapadia, Rehan, Povinelli, Michelle L

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GaAs Mid-IR Electrically Tunable Metasurfaces by Chae, Hyun Uk, Shrewsbury, Bo, Ahsan, Ragib, Povinelli, Michelle L., Kapadia, Rehan

“…In this work, we explore III-V based metal–semiconductor–metal structures for tunable metasurfaces. We use an epitaxial transfer technique to transfer a III-V…”
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Optimal design of aperiodic, vertical silicon nanowire structures for photovoltaics by Lin, Chenxi, Povinelli, Michelle L

“…We design a partially aperiodic, vertically-aligned silicon nanowire array that maximizes photovoltaic absorption. The optimal structure is obtained using a…”
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