Results 61 to 70 of about 7,200 (227)

A Capacitive Quenching Circuit for Use with Single Photon Avalanche Detectors [PDF]

open access: yes, 2013
In this thesis a Capacitive Quenching Circuit (CQC) is modelled using Linear Technology's Simulation Program with Integrated Circuit Emphasis (LT SPICE). Key components are optimised and the entire circuit is modelled. Once satisfied with the simulation,
Goldberg, Graham R
core  

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

open access: yesSmall, 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   +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  

Ultra-Sensitive PIN and Avalanche Photodiode Receivers

open access: yes, 2023
This book focuses on ultra-sensitive PIN and avalanche photodiode receiver (USPAR) ICs for data communication. After more than 20 years of exploitation of the pin-photodiode CMOS technology leading to efficient APD and SPAD receivers and sensors, this ...
Zimmermann, Horst
core   +1 more source

Rounded Monodisperse Fluorescent Nanodiamonds

open access: yesSmall, EarlyView.
Nanodiamond (ND) shape control using rapid molten‐nitrate etching is studied as a scale‐up method for monodispersed rounded particles. Optimal etching condition (567°C for 6 min) yields NDs with atomically stepped surfaces and reduced sp2 content. Compared to angular control, rounded NDs exhibit an increased proportion of luminescent particles (66% vs.
Helena Raabova   +7 more
wiley   +1 more source

Characteristics Measurement in a Deep UV Single Photon Detector Based on a TE-cooled 4H-SiC APD

open access: yesIEEE Photonics Journal, 2023
We report on the characteristics of a lab-assembled UV single photon detector based on a thermoelectrically cooled silicon carbide (4H-SiC) avalanche photodiode (APD).
In-Ho Bae   +3 more
doaj   +1 more source

Emergent Chaos‐Like Dynamics of Spin–Orbit‐Torque‐Driven Magnetic Transitions

open access: yesSmall, EarlyView.
By combining anisotropy‐engineered nanometer‐scale nucleation sites with time‐resolved x‐ray holography and micromagnetic modeling, magnetization dynamics are directly imaged, revealing chaos‐like fluctuations and skyrmion shedding and highlighting the intrinsic complexity of spin‐orbit torque driven systems.
L.‐M. Kern   +14 more
wiley   +1 more source

High-Speed Waveguide Integrated Avalanche Photodiode for InP-PICs

open access: yes, 2023
233234We present a waveguide integrated avalanche photodiode for high-speed operation. Its sophisticated structure comprising a fully undepleted absorber and an additional drift-layer, reducing the transit time significantly.
Boerma, Hendrik   +5 more
core   +1 more source

Correlated Transient Response of Buried Cables and Lightning Channel Radiation of Return Strokes of Five Rocket‐Triggered Lightning Strikes

open access: yesHigh Voltage, EarlyView.
ABSTRACT Data from five rocket‐triggered lightning flashes are adopted to analyse the correlated transient response of buried cables and lightning channel radiations. These five flashes have the same termination point that is right above the buried cables and involve a total of 32 return strokes.
Mi Zhou   +9 more
wiley   +1 more source

Characteristics of an avalanche photodiode with a spherical contact surface

open access: yes, 1997
The work presents an analysis of an avalanche photodiode (APD) with a spherical contact surface. We calculated the dependence of the avalanche multiplication and noise parameters on the incident light wavelength.
Smiljanić, Miloljub   +2 more
core   +1 more source

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