Results 51 to 60 of about 3,259 (176)
Optimization of Single Photon Avalanche Diode Design Using Surrogate-Reinforcement Learning
IEEE Photonics JournalThis paper presents the optimization of Single-Photon Avalanche Diode (SPAD) device design parameters using surrogate-assisted reinforcement learning (RL) framework.
Kazi Mohammad Mamun +2 more
doaj +1 more source
Single Photon Kilohertz Frame Rate Imaging of Neural Activity
Advanced Science, 2022 Establishing the biological basis of cognition and its disorders will require high precision spatiotemporal measurements of neural activity. Recently developed genetically encoded voltage indicators (GEVIs) report both spiking and subthreshold activity ...
Tian Tian +4 more
doaj +1 more source
European Journal of Inorganic Chemistry, EarlyView.Luminescent metal–organic framework@nanoparticle composites show dual emission of both components EuBDC and zirconyl‐containing nanoparticles, being reversible, excitation energy‐dependent and solvatochromic switches. The chromaticity changes are fast, as no chemical transformation is involved and required as source of the dual emission.
Tobias Wehner +3 more
wiley +1 more source
Laser &Photonics Reviews, EarlyView.An etchless lithium niobate (LN) metasurface with a slanted periodic TiO2 grating enables efficient and narrowband second‐harmonic generation (SHG) thanks to the light confinement in the LN film granted by quasi‐bound‐state‐in‐the‐continuum (q‐BIC) modes.
Yaping Hou +10 more
wiley +1 more source
Laser &Photonics Reviews, EarlyView.Room‐temperature lower‐polariton‐like lasing is realized in an InGaN/GaN thin‐film ridge cavity with lateral distributed Bragg reflectors. Near‐field optical microscopy distinguishes the transverse side‐DBR‐confined mode from a longitudinal photon‐like mode, while simulations reproduce their spatial profiles.
Wai Yuen Fu +2 more
wiley +1 more source
Photon-Detection-Probability Simulation Method for CMOS Single-Photon Avalanche Diodes
Sensors, 2020 Single-photon avalanche diodes (SPADs) in complementary metal-oxide-semiconductor (CMOS) technology have excellent timing resolution and are capable to detect single photons. The most important indicator for its sensitivity, photon-detection probability (
Chin-An Hsieh +4 more
doaj +1 more source
Laser &Photonics Reviews, EarlyView.A zero‐dimensional perovskite‐inspired scintillator (Cs3Cu2I5) is developed as a high‐radiation‐resilient radionuclide analyzer capable of operating under extreme γ‐ray environments. Even after 200 kGy irradiation, the device fully restores its original spectroscopic performance through simple thermal annealing, demonstrating intrinsic defect ...
Jiwon Seo +9 more
wiley +1 more source
Small, EarlyView.Single‐molecule localization microscopy is exploited to quantify the number of hemoglobin copies bound to specific receptors on S. aureus wall. This quantification supports the design of a photoactive derivative of hemoglobin able to photo‐inactivate S.
Pietro Delcanale +10 more
wiley +1 more source
Integration of Refractive Microlenses on BP/MoS2 Photodiodes for Enhanced Infrared Photodetection
Small, EarlyView.This study demonstrates the successful integration of black phosphorus/molybdenum disulfide infrared photodetectors with refractive microlenses to significantly enhance detection. The design achieves a 20‐fold photocurrent enhancement, enabling a room‐temperature detectivity of 1.83 × 109 cmHz1/2W−1, and demonstrates high‐resolution (1023 × 768) single‐
Varsha Ashwin Vedaraj +11 more
wiley +1 more source
Single-Photon Computational Imaging System Based on Multi-Pixel Photon Counter
PhotonicsExisting single-photon computational imaging systems always combine single-photon avalanche diode (SPAD)/photomultiplier tube (PMT) and time-correlated single-photon counting (TCSPC) together to collect the signals for imaging.
Rui Sun +7 more
doaj +1 more source