Results 31 to 40 of about 129 (117)

SPECTRAL CHARACTERISTICS STUDY OF PHASE-SHIFTED FIBER BRAGG GRATINGS UNDER PRESSURE APPLIED PERPENDICULAR TO FIBER AXIS [PDF]

Научно-технический вестник информационных технологий, механики и оптики, 2018
Subject of Research.The paper presents the study of effect that occurs when pressure is applied to the phase-shifted fiber Bragg gratings perpendicular to the fiber axis. Method. Fiber Bragg gratings inscription was performed using Talbot interferometer,
Novikova V.A., Varzhel S.V., Dmitriev A.A, Zalesskaya Yu.K., Idrisov R.F.   +4 more
doaj   +1 more source

Highly Versatile Real‐Time Optical Noise Filtering Through Temporal Cloaking

Laser &Photonics Reviews, Volume 20, Issue 10, 22 May 2026.
Conventional bandpass filtering strategies may be insufficient for recovering optical waveforms under extremely noisy conditions. We demonstrate a temporal‐cloaking denoising strategy enabled by the temporal Talbot effect, which concentrates the coherent signal of interest into short temporal slots while broadband noise remains temporally spread.
Majid Goodarzi, Manuel P. Fernandez, Geunweon Lim, Connor Rowe, Xinyi Zhu, José Azaña   +5 more
wiley   +1 more source

Tunable X-ray dark-field imaging for sub-resolution feature size quantification in porous media

Scientific Reports, 2021
X-ray computed micro-tomography typically involves a trade-off between sample size and resolution, complicating the study at a micrometer scale of representative volumes of materials with broad feature size distributions (e.g. natural stones). X-ray dark-
Benjamin K. Blykers, Caori Organista, Matthieu N. Boone, Matias Kagias, Federica Marone, Marco Stampanoni, Tom Bultreys, Veerle Cnudde, Jan Aelterman   +8 more
doaj   +1 more source

A Kapitza–Dirac–Talbot–Lau interferometer for highly polarizable molecules [PDF]

Nature Physics, 2007
Research on matter waves is a thriving field of quantum physics and has recently stimulated many investigations with electrons, neutrons, atoms, Bose-condensed ensembles, cold clusters and hot molecules. Coherence experiments with complex objects are of interest for exploring the transition to classical physics, for measuring molecular properties and ...
Gerlich, Stefan, Hackermüller, Lucia, Hornberger, Klaus, Stibor, Alexander, Ulbricht, Hendrik, Gring, Michael, Goldfarb, Fabienne, Savas, Tim, Müri, Marcel, Mayor, Marcel, Arndt, Markus   +10 more
openaire   +3 more sources

Beam‐hardening correction in clinical x‐ray dark‐field chest radiography using deep‐learning‐based bone segmentation

Medical Physics, Volume 53, Issue 4, April 2026.
Abstract Background Dark‐field radiography is a novel x‐ray imaging modality that provides complementary diagnostic information by visualising microstructural properties of lung tissue. Implemented via a Talbot–Lau interferometer integrated into a conventional x‐ray system, it permits simultaneous acquisition of perfectly registered attenuation and ...
Lennard Kaster, Maximilian E. Lochschmidt, Anne M. Bauer, Tina Dorosti, Sofia Demianova, Thomas Koehler, Daniela Pfeiffer, Franz Pfeiffer   +7 more
wiley   +1 more source

Spectral X-ray dark-field signal characterization from dual-energy projection phase-stepping data with a Talbot-Lau interferometer

Scientific Reports, 2023
Material-selective analysis of spectral X-ray imaging data requires prior knowledge of the energy dependence of the observed signal. Contrary to conventional X-ray imaging, where the material-specific attenuation coefficient is usually precisely known ...
Kirsten Taphorn, Lennard Kaster, Thorsten Sellerer, Alexander Hötger, Julia Herzen   +4 more
doaj   +1 more source

Transport of Peroxyacyl Nitrates (PANs) Across Northern Hemisphere Ocean Basins From Satellite Observations

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 6, 28 March 2026.
Abstract We leverage global satellite observations of Peroxyacyl Nitrates (PANs) from the Cross‐track Infrared Sounder (CrIS) on the Suomi National Polar‐orbiting Partnership satellite to evaluate seasonal and interannual variations of intercontinental transport in the Northern Hemisphere between 2016 and 2022.
Madison Shogrin, Vivienne H. Payne, Susan S. Kulawik, Kazuyuki Miyazaki, Emily V. Fischer   +4 more
wiley   +1 more source

X-ray phase-contrast tomography of renal ischemia-reperfusion damage. [PDF]

PLoS ONE, 2014
The aim of the study was to investigate microstructural changes occurring in unilateral renal ischemia-reperfusion injury in a murine animal model using synchrotron radiation.The effects of renal ischemia-reperfusion were investigated in a murine animal ...
Astrid Velroyen, Martin Bech, Irene Zanette, Jolanda Schwarz, Alexander Rack, Christiane Tympner, Tanja Herrler, Claudia Staab-Weijnitz, Margarita Braunagel, Maximilian Reiser, Fabian Bamberg, Franz Pfeiffer, Mike Notohamiprodjo   +12 more
doaj   +1 more source

High‐speed quantitative X‐ray multi‐contrast imaging with deep learning based modulated pattern analysis

Journal of Synchrotron Radiation, Volume 33, Issue 2, Page 467-480, March 2026.
This work presents a neural‐network framework that accelerates X‐ray multi‐contrast imaging—simultaneously delivering absorption, phase, and dark‐field, while maintaining high spatial resolution, and outperforms correlation‐based methods in speed, achieving a favorable balance between resolution and throughput.
Zhi Qiao, Yudong Yao, Hongyu Chen, Guohao Du, Pingping Wen, Zhihao Guan, Yajun Tong, Xianbo Shi, Huaidong Jiang   +8 more
wiley   +1 more source

Quantifying grating defects in X-ray Talbot-Lau interferometry through a comparative study of two fabrication techniques

Scientific Reports
The performance of an X-ray grating interferometry system depends on the geometry and quality of the gratings. Fabrication of micrometer-pitch high-aspect-ratio gold gratings, which are essential for measuring small refraction angles at higher energies ...
Alexandre Pereira, Simon Spindler, Zhitian Shi, Lucia Romano, Michał Rawlik, Federica Marone, Daniel Josell, Martin Stauber, Marco Stampanoni   +8 more
doaj   +1 more source