Electrical and Electronic Engineering - Research Publications
Permanent URI for this collection
Search Results
1 - 4 of 4
-
ItemElectrical tuning of reflectance of graphene metasurface for unpolarized long wavelength infrared light(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.
-
ItemMid-infrared computational spectroscopy with an electrically-tunable graphene metasurface(OSA - Optical Society of America, 2019-01-01)We demonstrate graphene-plasmonic metasurfaces whose mid-infrared reflection spectra are electrically-tunable. Using measurements of the power reflected by the metasurfaces at different drive voltages, the source spectrum is computationally reconstructed by the recursive least squares method.
-
ItemLong -Wave In a ed Photodetectors Based on Platinum Diselenide(IEEE, 2020)We demonstrate long wave infrared photodetectors based on the transition metal dichalcogenide platinum diselenide (PtSe2) in its bulk form for the first time to our knowledge. Fabricated devices show sub-millisecond response times.
-
ItemVisible to Long-Wave Infrared Photodetectors based on Copper Tetracyanoquinodimethane (CuTCNQ) Crystals(OSA - Optical Society of America, 2020-08-01)We demonstrate room-temperature photodetectors at wavelengths from visible (450 nm, 532 nm) to near- (850 nm), short-wave (1550 nm), mid-wave (4.5 \mu m) and long-wave (8.35 \mu m) infrared. These are based on drop-cast Cu TCNQ crystals.