Results 61 to 70 of about 16,481 (212)

4H–SiC Avalanche Photodiode Linear Array Operating in Geiger Mode

IEEE Photonics Journal, 2017
In this study, a 50-pixel linear array of 4H–SiC ultraviolet avalanche photodiodes operating in Geiger mode is reported for the first time. The 50 pixels within the linear array are all capable of detecting single photons but with a small number ...
Lianghui Li, Dong Zhou, Hai Lu, Wenkai Liu, Xiaofan Mo, Fangfang Ren, Dunjun Chen, Ruiqi Wang, Guanglei Li, Rong Zhang, Youdou Zheng   +10 more
doaj   +1 more source

Dependence of Ge/Si Avalanche Photodiode Performance on the Thickness and Doping Concentration of the Multiplication and Absorption Layers

Inorganics, 2023
In this article, the performance and design considerations of the planar structure of germanium on silicon avalanche photodiodes are presented. The dependences of the breakdown voltage, gain, bandwidth, responsivity, and quantum efficiency on the reverse
Hazem Deeb, Kristina Khomyakova, Andrey Kokhanenko, Rahaf Douhan, Kirill Lozovoy   +4 more
doaj   +1 more source

Optoelectrical Devices for Neural Interfacing: Engineering Integration, Stability, and Multimodal Sensing

Advanced Healthcare Materials, EarlyView.
Implantable optoelectrical devices are an effective resource for the modulation and monitoring of neural activity with high spatiotemporal resolution. This review discusses current challenges faced by these devices and outlines future perspectives for the development of next‐generation neural interfaces targeting chronic, multisite, and multimodal ...
Stella Aslanoglou, Barbara Spagnolo, Antonio Balena, Massimo De Vittorio, Ferruccio Pisanello   +4 more
wiley   +1 more source

Breaking the Buildup-time Limit of sensitivity in Avalanche Photodiodes by Dynamic Biasing [PDF]

, 2015
Avalanche photodiodes (APDs) are the preferred photodetectors for direct-detection, high data-rate long-haul optical telecommunications. APDs can detect low-level optical signals due to their internal amplification of the photon-generated electrical ...
Campbell, Joe C., Efroymson, Robert, El-Howayek, George, Hayat, Majeed M., Zarkesh-Ha, Payman   +4 more
core   +1 more source

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

Advanced 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, You Zhou, Qingxiu Li, Wenyu Zhao, Sunyingyue Geng, Hangfei Li, Yan‐Bing Leng, Shirui Zhu, Guanglong Ding, Yongbiao Zhai, Ziyu Lv, Ye Zhou, Su‐Ting Han   +12 more
wiley   +1 more source

Design of an Electronic Interface for Single-Photon Avalanche Diodes

Sensors
Single-photon avalanche diodes (SPADs) belong to a family of avalanche photodiodes (APDs) with single-photon detection capability that operate above the breakdown voltage (i.e., Geiger mode).
Salvatore A. Pullano, Giuseppe Oliva, Twisha Titirsha, Md Maruf Hossain Shuvo, Syed Kamrul Islam, Filippo Laganà, Antonio La Gatta, Antonino S. Fiorillo   +7 more
doaj   +1 more source

Laser‐Based In Situ Diagnostics of Temperature and Material‐Growth Dynamics in Photothermal Laser Nanoprinting of ZnO

Laser &Photonics Reviews, EarlyView.
This work elucidates the previously unknown thermal dynamics during sub‐micrometer photothermal laser printing of zinc oxide using a non‐invasive transmission‐based in situ measurement. The elevated temperatures are shown to be highly localized around the laser focal spot, reaching average temperature increases of about 113 K per mW of laser power ...
Steven Kraus, Kristian Kraft, Yolita M. Eggeler, Martin Wegener, Paul Somers   +4 more
wiley   +1 more source

Compostable and Recyclable Baroplastic Triblock Copolymers Enable Low‐Energy Polymer Processing

Small, EarlyView.
Baroplastic Poly(L‐lactide)‐block‐poly(ethylene glycol)‐block‐poly(L‐lactide) triblock copolymers enable ambient‐temperature processing under moderate pressure, reducing energy demand while preserving polymer integrity. The materials show rapid industrial compostability, effective chemical and physical recyclability, and compatibility with heat ...
Chengzhang Xu, Chengwei Yi, Emilia Fulajtar, Anja FRM Ramsperger, Julian Brehm, Christian Laforsch, Holger Schmalz, Sabine Rosenfeldt, Ulrich Mansfeld, Holger Kress, Andreas Möglich, Andreas Greiner, Seema Agarwal   +12 more
wiley   +1 more source

Infrared Avalanche Photodiode Detectors

Defence Science Journal, 2017
This study presents on the design, fabrication and characteristics of HgCdTe mid-wave infrared avalanche photodiode (MWIR APD). The gain of 800 at - 8 V bias is measured in n+-ν-p+ detector array with pitch size of 30 μm. The gain independent bandwidth of 6 MHz is achieved in the fabricated device.
Anand Singh, Ravinder Pal
openaire   +1 more source

Intercomparison of CL31 and CL51 ceilometers and impact of installation angle on cloud base height measurement agreement

Weather, EarlyView.
Lowest‐layer cloud base height (CBH) measurements obtained between July 2018 and December 2019 from four ceilometers at the Korea Standard Meteorological Observatory were compared to determine how ceilometer installation angle differentially affects CBH measurements.
Jaewon Kim, Byeongtaek Kim, Seonok Hong, Kihoon Kim   +3 more
wiley   +1 more source