Results 51 to 60 of about 1,282 (172)

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

Advanced Healthcare Materials, Volume 15, Issue 20, 27 May 2026.
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

Time-Domain Fluorescence Lifetime Imaging Techniques Suitable for Solid-State Imaging Sensor Arrays

Sensors, 2012
We have successfully demonstrated video-rate CMOS single-photon avalanche diode (SPAD)-based cameras for fluorescence lifetime imaging microscopy (FLIM) by applying innovative FLIM algorithms. We also review and compare several time-domain techniques and
Robert K. Henderson, Jochen Arlt, David Tyndall, Justin Richardson, Daniel R. Matthews, Viput Visitkul, Richard Walker, David Day-Uei Li, Simon Ameer-Beg   +8 more
doaj   +1 more source

Surface Plasmon Enhanced Photoluminescence of Carbon Dots Formed In Situ on Silver Gratings

Advanced Science, Volume 13, Issue 27, 13 May 2026.
Carbon emitters formed in situ on a silver grating via plasmonic catalysis yield enhanced spontaneous emission by preferential radiative decay into surface plasmons. Enhancement manifests as emission exhibiting characteristics of coherence (polarization, directionality), and accelerated lifetimes of ∼30 ps, yielding Purcell factors of ∼70.
Maryam Sadat Amiri Naeini, Jaspreet Walia, Luis Angel Mayoral‐Astorga, Hyung Woo Choi, Arnaud Weck, Pierre Berini   +5 more
wiley   +1 more source

A Fully Digital Indirect Time-of-Flight Image Sensor With Multi-Frame Integration and Time-Gated Single-Photon Counting Method

IEEE Access
This paper presents an indirect time-of-flight (iToF) image sensor, based on a single-photon avalanche diode (SPAD) and a time-gated single-photon counting (TGSPC) method.
Byungchoul Park, Hyeon-June Kim
doaj   +1 more source

Modeling and Analysis of BER Performance in a SPAD-Based Integrated Fiber Optical Receiver

IEEE Photonics Journal, 2018
An analytical approach to model and analysis of the bit-error ratio (BER) performance in multi-single photon avalanche diode (SPAD) optical receivers is presented.
Hiwa Mahmoudi, Michael Hofbauer, Bernhard Steindl, Kerstin Schneider-Hornstein, Horst Zimmermann   +4 more
doaj   +1 more source

Numerical Model of SPAD-Based Direct Time-of-Flight Flash LIDAR CMOS Image Sensors

Sensors, 2020
We present a Montecarlo simulator developed in Matlab® for the analysis of a Single Photon Avalanche Diode (SPAD)-based Complementary Metal-Oxide Semiconductor (CMOS) flash Light Detection and Ranging (LIDAR) system.
Alessandro Tontini, Leonardo Gasparini, Matteo Perenzoni   +2 more
doaj   +1 more source

Time‐Resolved Photoluminescence Lifetime Measurements of Organic Photovoltaic Materials

physica status solidi (a), Volume 223, Issue 8, 22 April 2026.
A nondestructive measurement technique utilizing time‐correlated single photon counting (TCSPC), based on photoluminescence statistics is presented for organic photovoltaic materials. This method identifies a comparative parameter independent of absorber layer thickness and the presence of transport layers (ETL/HTL).
Levente Illés, Ferenc Steinbach, Ferenc Korsós, Tamás Brigancz, Attila Barócsi, Alexandros Zachariadis, Christos Kapnopoulos, Evangelos Mekeridis, Argiris Laskarakis, Stergios Logothetidis, Zoltán Tamás Kiss, Sándor Lenk   +11 more
wiley   +1 more source

Characterization of SPAD Array for Multifocal High-Content Screening Applications

Photonics, 2016
Current instruments used to detect specific protein-protein interactions in live cells for applications in high-content screening (HCS) are limited by the time required to measure the lifetime.
Anthony Tsikouras, Pietro Peronio, Ivan Rech, Nehad Hirmiz, M. Jamal Deen, Qiyin Fang   +5 more
doaj   +1 more source

Solution‐Processed Spin‐Polarized Light‐Emitting Diodes of Colloidal Quantum Wells and Magnetic Nanoparticles

Advanced Optical Materials, Volume 14, Issue 12, 25 March 2026.
All‐solution‐processed spin‐LEDs based on colloidal Fe3O4 nanoparticles and CdSe/CdZnS core/shell CQWs that allows for polarization modulation of electroluminescence are fabricated. With these devices, electrical injection of spin‐polarized carriers from the Fe3O4 nanoparticle layer into the CdSe/CdZnS CQWs is demonstrated, realizing circularly ...
Savas Delikanli, Arinjoy Bhattacharya, Betul Canimkurbey, Chang Huai, Amani Almutairi, Arman Najafi, Hilal Korkut, Farzan Shabani, Furkan Isik, James Pientka, Ibrahim Sarpkaya, Hao Zeng, Richard D. Schaller, Athos Petrou, Hilmi Volkan Demir   +14 more
wiley   +1 more source

Design of 16 × 16 Low-Timing-Jitter InGaAs/InP Single-Photon Avalanche Photodiode Array for LiDAR

IEEE Photonics Journal
The precise calibration of timing jitter in single-photon chips and LiDAR devices is critical for the development of high-precision LiDAR systems. This paper presents the design and fabrication of a double-diffused InGaAs/InP SAGCM single-photon ...
Yu Chang, Kai Qiao, Zefang Xu, Liyu Liu, Linmeng Xu, Ming Li, Fei Yin, Xing Wang   +7 more
doaj   +1 more source