Results 241 to 250 of about 2,144,818 (365)

Graphene as Infrared and Electron Transparent Electrode Applied to the Design of Narrow Bandgap Nanocrystal‐Based Photodiode

open access: yesAdvanced Optical Materials, EarlyView.
The article explores the need for transparent conductive electrode in the context of nanocrystal based infrared photodetectors beyond traditional transparent conductive oxide and metallic grids. Use of such sensor for imaging where the diode is deposited on a read‐out integrated circuit raised the need for top transparent electrode.
Dario Mastrippolito   +17 more
wiley   +1 more source

Extreme Terahertz Nonlinearity of AlGaN/GaN‐Based Grating‐Gate Plasmonic Crystals

open access: yesAdvanced Optical Materials, EarlyView.
Plasmonic crystals based on grating‐gated 2D electron gas in AlGaN/GaN heterostructures provide a platform for strong light‐matter interaction. Pump‐probe experiments revealed strong terahertz nonlinearity leading to 45% increase in transmission at a fluence below 350 nJ cm−2.
Pavlo Sai   +14 more
wiley   +1 more source

BP/MoS₂ Van Der Waals Heterojunctions for Self‐Powered Photoconduction

open access: yesAdvanced Optical Materials, EarlyView.
A multilayer black phosphorus (BP)/monolayer MoS₂ vertical heterostructure is investigated using four‐probe measurements. The device exhibits rectifying behavior, dominant n‐type transport, low contact resistance, and an interface barrier of 68 meV.
Adolfo Mazzotti   +9 more
wiley   +1 more source

A field programmable gate array based modular motion control platform

open access: bronze, 2011
Osman Koç   +3 more
openalex   +2 more sources

High‐Quality‐Factor, Compact Nanoplasmonic Filter Utilizing Graphene Metasurface at Near‐Infrared Range

open access: yesAdvanced Photonics Research, EarlyView.
A plasmonic reflective filter utilizing monolayer graphene is proposed and theoretically examined. The filter demonstrates dual‐band reflection and absorption characteristics at resonance wavelengths in the near infrared. The reflection dips is adjusted by manipulating the chemical potential of graphene.
Mohammad Sadegh Zare   +3 more
wiley   +1 more source

Optical Chaos Generation and Applications

open access: yesAdvanced Photonics Research, EarlyView.
This review comprehensively examines optical chaos generation via feedback, injection, and optoelectronic methods, emphasizing bandwidth enhancement and time‐delay suppression. Applications include chaos‐synchronized secure communication, physical random number generation, chaotic lidar for cm‐level detection, distributed fiber sensing, and terahertz ...
Wenhui Chen   +8 more
wiley   +1 more source

Multispectral Polarization‐Insensitive Graphene/Silicon Guided Mode Resonance Active Metasurfaces

open access: yesAdvanced Photonics Research, EarlyView.
CMOS‐compatible graphene/silicon active metasurfaces based on guided‐mode resonance filters are investigated. Simulations reveal a high extinction ratio (>25 dB), a narrow linewidth (≈1.5 nm), and polarization‐insensitive operation. Multispectral mid‐infrared performance is achieved via geometrical scaling.
Prateeksha Sharma   +5 more
wiley   +1 more source

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