Results 41 to 50 of about 5,513 (216)

Single photon avalanche detectors: prospects of new quenching and gain mechanisms

open access: yesNanophotonics, 2015
While silicon single-photon avalanche diodes (SPAD) have reached very high detection efficiency and timing resolution, their use in fibre-optic communications, optical free space communications, and infrared sensing and imaging remains ...
Hall David, Liu Yu-Hsin, Lo Yu-Hwa
doaj   +1 more source

Bioinspired Adaptive Sensors: A Review on Current Developments in Theory and Application

open access: yesAdvanced Materials, EarlyView.
This review comprehensively summarizes the recent progress in the design and fabrication of sensory‐adaptation‐inspired devices and highlights their valuable applications in electronic skin, wearable electronics, and machine vision. The existing challenges and future directions are addressed in aspects such as device performance optimization ...
Guodong Gong   +12 more
wiley   +1 more source

Design and characterisation of InGaAs high speed photodiodes, InGaAs/InAlAs avalanche photodiodes and novel AlAsSb based avalanche photodiodes [PDF]

open access: yes, 2012
Avalanche photodiodes (APDs) can provide higher sensitivity, when the noise is dominated by electronic noise, than conventional p-i-n photodiodes due to its internal gain achieved via the impact ionisation process.
Xie, Shiyu
core  

MCT APD Detection System for Atmospheric Profiling Applications Using Two-Micron Lidar [PDF]

open access: yesEPJ Web of Conferences, 2020
An advanced detection system, based on mercury cadmium telluride avalanche photodiodes array, was implemented within a 2-μm lidar. Detection system characterization was conducted for performance evaluation including settling time, noise-equivalent-power (
Refaat Tamer F.   +3 more
doaj   +1 more source

Quantum Photothermal Self‐Monitoring Fiber Probes for In Vivo Photothermal Therapy

open access: yesAdvanced Science, EarlyView.
A miniaturized quantum photothermal fiber probe based on a metal/polymer/glass composite optoelectronic fiber that simultaneously guides lightwave and microwave was developed for the first time. The probe achieves enhanced photothermal conversion (13°C/mW, 25°C–120°C range) while providing real‐time self‐monitoring with 0.2°C thermal resolution at the ...
Wanjun Li   +12 more
wiley   +1 more source

Trap-assisted tunneling in AlGaN avalanche photodiodes

open access: yesAIP Advances, 2017
We fabricated AlGaN solar-blind avalanche photodiodes (APDs) that were based on separate absorption and multiplication (SAM) structures. It was determined experimentally that the dark current in these APDs is rapidly enhanced when the applied voltage ...
Z. G. Shao   +9 more
doaj   +1 more source

InGaAs Communication Photodiodes: From Low- to High-Power-Level Designs

open access: yesIEEE Photonics Journal, 2010
While InGaAs absorption material has been used for various applications up to 1.6-μm wavelength, specific designs for low-level detection have become of main interest using high responsivity and low-dark-current detectors.
M. Achouche   +5 more
doaj   +1 more source

Neuromorphic Near‐Sensor and In‐Sensor Computing Enabled by Next‐Generation Material‐Based Sensors

open access: yesAdvanced Science, EarlyView.
This Review presents a structural framework that classifies neuromorphic sensing into near‐sensor and in‐sensor architectures, clarifying physical coupling between sensing and computation. The framework connects neural and synaptic device functions with recent advances in optical, mechanical, and chemical sensing, compares energy consumption and ...
Su Yeon Jung   +7 more
wiley   +1 more source

Electron Bombarded Silicon Avalanche Photodiodes.

open access: yes, 2020
The primary aim of the work described in this thesis was to examine theoretically the interaction of an electron beam with commercially available silicon devices , originally intended as avalanche photodiodes and investigate experimentally the possible ...
Varol, Huseyin Selcuk.
core   +1 more source

Development of High Speed Low Noise InAs Electron Avalanche Photodiodes [PDF]

open access: yes, 2012
EThOS - Electronic Theses Online ServiceGBUnited ...
Ker, Pin Jern
core  

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