Results 61 to 70 of about 1,279 (175)

Narrow Linewidth Spontaneous and Lasing Emissions from Open‐Access Microcavity‐Embedded Perovskite Quantum Dots

open access: yesAdvanced Optical Materials, Volume 14, Issue 1, 9 January 2026.
Continuous‐wave lasing from a small number of perovskite quantum dots is achieved by coupling their photoluminescence to open‐access curved dielectric cavities. This geometry confines their emission into a single optical mode, sharply narrowing linewidths in both spontaneous and lasing regimes.
Sunny Tiwari   +7 more
wiley   +1 more source

Flow Cytometry: Advances, Challenges and Trends

open access: yesBioEssays, Volume 48, Issue 1, January 2026.
Recent advances in flow cytometry span hardware, data processing, and AI‐driven analytics. Emerging modalitiesincluding spectral, imaging, mass, and nano/EV cytometryenable higher‐parameter and small‐particle detection. Integrated machine learning drives a shift from manual gating toward automated multi‐omics workflows.
J. Paul Robinson   +2 more
wiley   +1 more source

s2ISM: A Comprehensive Approach for Uncompromised Super-Resolution and Optical Sectioning in Image Scanning Microscopy [PDF]

open access: yesEPJ Web of Conferences
Image Scanning Microscopy (ISM) enables good signal-to-noise ratio (SNR), super-resolution and high information content imaging by leveraging array detection in a laser-scanning architecture. However, the SNR is still limited by the size of the detector,
Zunino Alessandro   +5 more
doaj   +1 more source

High Dynamic Range Imaging at the Quantum Limit with Single Photon Avalanche Diode-Based Image Sensors

open access: yesSensors, 2018
This paper examines methods to best exploit the High Dynamic Range (HDR) of the single photon avalanche diode (SPAD) in a high fill-factor HDR photon counting pixel that is scalable to megapixel arrays.
Neale A.W. Dutton   +4 more
doaj   +1 more source

A Design and Characterization of CMOS SPAD Fabricated in a 0.18-μm Standard Process

open access: yesIEEE Access
This article presents the design and characterization of a cost-effective single-photon avalanche diode (SPAD) implemented using a standard 180-nm CMOS process without any process modification.
Woojin Jo   +2 more
doaj   +1 more source

SPAD Smart Pixel for Time-of-Flight and Time-Correlated Single-Photon Counting Measurements

open access: yesIEEE Photonics Journal, 2012
We present a smart pixel based on a single-photon avalanche diode (SPAD) for advanced time-of-flight (TOF) and time-correlated single photon counting (TCSPC) applications, fabricated in a cost-effective 0.35- m CMOS technology.
F. Villa   +10 more
doaj   +1 more source

Artifact Removal in Long-Range Single Photon LiDAR via Waveforms-Guided Depth Image Estimation

open access: yesIEEE Photonics Journal
Single-photon light detection and ranging (LiDAR) has widespread applications due to the ultra-high sensitivity of the single-photon detector. However, the reconstruction has been plagued by multiple types of noise caused by crosstalk, dark counts, and ...
Jiying Chang   +7 more
doaj   +1 more source

Single-Photon Computational Imaging System Based on Multi-Pixel Photon Counter

open access: yesPhotonics
Existing 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

Home - About - Disclaimer - Privacy