Results 101 to 110 of about 29,213 (196)

Defect Analysis of the β– to γ–Ga2O3 Phase Transition

Advanced Functional Materials, Volume 36, Issue 20, 9 March 2026.
The role of defects at all the relevant stages of the β$\beta$‐ to γ$\gamma$‐Ga2O3 polymorph transition is investigated using a multi method approach. The positron annihilation spectroscopy based results show that the defect density decreases after the transition, and that changes in defect configuration within the γ phase occur with increasing ...
Umutcan Bektas, Maciej O. Liedke, Huan Liu, Fabian Ganss, Maik Butterling, Nico Klingner, René Hübner, Ilja Makkonen, Andreas Wagner, Gregor Hlawacek   +9 more
wiley   +1 more source

Fluorescent Polymeric Nanofibers as Ratiometric Multiplexed Skin Sensors of pH and Oxygen

Advanced Healthcare Materials, Volume 15, Issue 10, 13 March 2026.
Fluorescent polymeric nanofibers and nanorods are produced as ratiometric sensors of two important physiological parameters: pH and oxygen. They operate by dual Forster resonance energy transfer from large number of energy donor dyes to limited number of two distinct energy acceptors, enabling simultaneous sensing of pH and oxygen.
Rémi Pelletier, Anila Hoskere Ashoka, Andrey S. Klymchenko   +2 more
wiley   +1 more source

Approaches for single channel large area silicon photomultiplier array readout

AIP Advances, 2019
We present the results of experiments applying a large area tiled array of silicon photomultipliers (SiPM) to gamma ray spectroscopy with 50.8 mm diameter NaI(Tl) and CsI(Tl) scintillators and 25.4 mm diameter CeBr3.
C. M. Lavelle, W. Shanks, C. Chiang, M. Nichols, J. Osborne Jr., A. Herschelman, B. Brown, M. Cho   +7 more
doaj   +1 more source

Highly Fluorescent and Stable Lead Halide Perovskite Nanocrystals Protected by an In Situ Formed Lead Halide–Amino Acid Matrix

Advanced Photonics Research, Volume 7, Issue 3, March 2026.
This work presents highly fluorescent and stable MAPbBr3 and FAPbBr3 perovskite nanocrystals prepared via a facile single‐step precipitation method. An in situ formed PbBr2­amino acid matrix encapsulates the nanocrystals, enabling near‐unity photoluminescence quantum yields and exceptional long‐term stability under ambient conditions.
Felix Mayr, Elisabeth Leeb, Katharina Matura, Munise Cobet, Thomas Rath, Marco Sigl, Yolanda Salinas, Dorian Ziss, Tena Markulin, Jakob Hofinger, Katarina Gugujonović, Bekele Hailegnaw, Oliver Brüggemann, Thomas A. Klar, Niyazi S. Sariciftci, Markus C. Scharber   +15 more
wiley   +1 more source

Light Concentrators for Silicon Photomultipliers

Physics Procedia, 2012
AbstractPhotosensitive devices represent a key solution for several current and future categories of experiments in which photon detection is the crucial point for the observation of physical phenomena. Astro particle experiments for instance, one of the most promising observation channels for High Energy Physics, typically study energetic phenomena in
Barbarino G., De Asmundis R., De Rosa G., Russo S., Vivolo D., Mollo C. M.   +5 more
openaire   +3 more sources

Photomultiplier circuit including means for rapidly reducing the sensitivity thereof [PDF]

, 1974
A simple, reliable and inexpensive control circuit is described for rapidly reducing the bias voltage across one or more of the dynode stages of a photomultiplier, to substantially decrease its sensitivity to incoming light at those times where excess ...
Mcclenahan, J. O.
core   +1 more source

Wafer‐Scale Room‐Temperature Processing of Lead‐Free Perovskites for Optoelectronic Applications

Advanced Science, Volume 13, Issue 16, 18 March 2026.
We present the first wafer‐scale, room‐temperature synthesis of lead‐free Cs3Sb2X9 (X = Br, I) perovskite films via solvent‐free magnetron sputtering. The resulting high‐performance photodetectors achieve benchmark responsivity, bandwidth, and detectivity, enabling scalable manufacturing for next‐generation optoelectronics.
Rosanna Mastria, Hoi Tung Lam, Ioannis Leontis, Sara Bonomi, Mohammed Ali Saleh Alshehri, Aurora Rizzo, Pietro Galinetto, Maddalena Patrini, Ned Taylor, Steven P. Hepplestone, Monica F. Craciun, Lorenzo Malavasi, Saverio Russo   +12 more
wiley   +1 more source

Circularly Polarized Long‐Persistent and Photostimulated Luminescence Enabled through Förster Resonance Energy Transfer and Upconversion Strategies

Advanced Science, Volume 13, Issue 14, 9 March 2026.
Using chiral emitters with circularly polarized luminescence (CPL) characteristics integrated into organic long‐persistent luminescence (OLPL) system demonstrates circularly polarized long‐persistent luminescence (CP‐LPL). Importantly, the Förster resonance energy transfer (FRET)‐based design reveals circularly polarized photostimulated luminescence ...
Ruttapol Malatong, Rengo Yoshioka, Dmitry Kovalevskiy, Kentaro Takaji, Hajime Shigemitsu, Kaede Kawaguchi, Yemineni S. L. V. Narayana, Toshiyuki Kida, Ryota Kabe   +8 more
wiley   +1 more source

Characterisation of radiation damage in silicon photomultipliers with a Monte Carlo model

, 2008
Measured response functions and low photon yield spectra of silicon photomultipliers (SiPM) were compared to multi-photoelectron pulse-height distributions generated by a Monte Carlo model. Characteristic parameters for SiPM were derived.
Buzhan, Dolgoshein, Dolgoshein, Eraerds, J. Pochodzalla, Leroy, Musienko, P. Achenbach, Renker, S. Sánchez Majos, Wright   +10 more
core   +1 more source

Comparison of the Coating Structure of Silicon‐Based PECVD Coatings With Varying Organic Content

Plasma Processes and Polymers, Volume 23, Issue 3, March 2026.
Silicon‐based PECVD coatings transition abruptly from organic SiOCH to oxidic SiOx at ~32 at% silicon, exhibiting threshold behavior in barrier performance. Chemical composition seems to dominate over porosity: SiOx coatings unexpectedly show higher porosity yet superior barrier properties, possibly due to rigid cage‐like molecular structures ...
Jonas Franke, Maciej Oskar Liedke, Andreas Schäfer, Maik Butterling, Ahmed Gamal Attallah, Eric Hirschmann, Andreas Wagner, Rainer Dahlmann   +7 more
wiley   +1 more source