- School of Physics - Research Publications
School of Physics - Research Publications
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ItemNo Preview AvailableOptical trapping with plasmonic and photonic nanostructures (Conference Presentation)Crozier, KB ; Adibi, A ; Lin, S-Y ; Scherer, A (SPIE, 2017-04-28)
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ItemNo Preview AvailableRecent progress in semiconductor nanowire photodetectors for color and multispectral imaging (Conference Presentation)Crozier, KB ; Chang-Hasnain, CJ ; Koyama, F ; Zhou, W ; Faraon, A (SPIE, 2017-04-28)
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ItemElectrical tuning of reflectance of graphene metasurface for unpolarized long wavelength infrared lightShrestha, VR ; Gao, Y ; Amani, M ; Bullock, J ; Javey, A ; Crozier, KB (OSA, 2018-01-01)We demonstrate a graphene-metal metasurface for unpolarized long wavelength infrared light with electrically-tunable reflectance. By applying a gate voltage, we shift the wavelength of a resonant reflectance dip centered at ~9.4 micron by~156 nm.
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ItemExperimental Demonstration of Mid-Infrared Computational Spectroscopy with a Plasmonic Filter ArrayCraig, B ; Shrestha, VR ; Meng, J ; Crozier, KB (OSA & IEEE, 2018-01-01)We demonstrate mid-infrared plasmonic filters. We experimentally determine the spectrum of a mid-infrared light source using an algorithm whose inputs are the total power transmitted by each filter and the transmission spectrum of each filter.
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ItemMid-infrared Magnetic Mirror Based on a Hybrid Metal/Dielectric MetasurfaceYe, M ; Li, S ; Gao, Y ; Shrestha, VR ; Crozier, KB (IEEE, 2018)We propose a hybrid metal/dielectric metasurface that functions as a mid-infrared magnetic mirror. It consists amorphous silicon cuboids on gold. The physical mechanism is explained by image theory. Measured reflection spectra agree with simulations.
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ItemNanostructured Fishnet Silicon Photodetector Pixels as a Fully-Contained Microspectrometer ChipCadusch, JJ ; Meng, J ; Crozier, KB (IEEE, 2018)We experimentally demonstrate a microspectrometer comprising twenty silicon photodetector pixels, whose responsivities are engineered via nanostructured fishnet patterns. We computationally reconstruct the spectrum of light that illuminates the chip from the measured pixel photocurrents.
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ItemControlled optical trapping and transport of a single 100 nm particle across an array of silicon nanoantennasXu, Z ; Crozier, KB (OSA Publishing, 2018-08-06)We experimentally demonstrate the optical trapping and transport of a single 100 nm polystyrene nanosphere across an array of silicon nanoantennas. Our device is all silicon and produces negligible local heating.
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ItemDielectric metasurface comprising color hologram encoded into a color printing imageWen, D ; Cadusch, J ; Meng, J ; Crozier, KB (IEEE, 2019-01-01)
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ItemHigh-resolution mid-infrared spectral reconstruction using a subwavelength coaxial aperture arrayCraig, B ; Meng, J ; Shrestha, VR ; Cadusch, JJ ; Crozier, KB (OSA & IEEE, 2019-01-01)We demonstrate mid-infrared computational spectroscopy using an array of coaxial aperture filters. We experimentally determine material transmission spectra using an algorithm whose inputs are the transmission spectra and the power transmitted through each filter.
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ItemMachine learning design of plasmonic apertures for optical nanotweezersLi, N ; Shrestha, VR ; Cadusch, J ; Xu, Z ; Crozier, KB (OSA, 2019-01-01)We present a new approach to design plasmonic structures for optical trapping. Using a simulated annealing algorithm, the shape of a nanoaperture is optimized. An order of magnitude increase in trapping potential is predicted.