Results 11 to 20 of about 95,748 (273)

Noise reduction in X-ray photon correlation spectroscopy with convolutional neural networks encoder–decoder models [PDF]

Scientific Reports, 2021
Like other experimental techniques, X-ray photon correlation spectroscopy is subject to various kinds of noise. Random and correlated fluctuations and heterogeneities can be present in a two-time correlation function and obscure the information about the
Tatiana Konstantinova, Lutz Wiegart, Maksim Rakitin, Anthony M. DeGennaro, Andi M. Barbour   +4 more
doaj   +2 more sources

X-ray photon correlation spectroscopy of protein dynamics at nearly diffraction-limited storage rings [PDF]

IUCrJ, 2019
This study explores the possibility of measuring the dynamics of proteins in solution using X-ray photon correlation spectroscopy (XPCS) at nearly diffraction-limited storage rings (DLSRs). We calculate the signal-to-noise ratio (SNR) of XPCS experiments
Johannes Möller, Michael Sprung, Anders Madsen, Christian Gutt   +3 more
doaj   +2 more sources

A new experimental setup for combined fast differential scanning calorimetry and X-ray photon correlation spectroscopy [PDF]

Journal of Synchrotron Radiation
Synchrotron-radiation-based techniques are a powerful tool for the investigation of materials. In particular, the availability of highly brilliant sources has opened the possibility to develop techniques sensitive to dynamics at the atomic scale such as ...
Alessandro Martinelli, Jacopo Baglioni, Peihao Sun, Francesco Dallari, Eloi Pineda, Yajuan Duan, Tobias Spitzbart-Silberer, Fabian Westermeier, Michael Sprung, Giulio Monaco   +9 more
doaj   +2 more sources

Towards ultrafast dynamics with split-pulse X-ray photon correlation spectroscopy at free electron laser sources [PDF]

Nature Communications, 2018
X-ray photon correlation spectroscopy has been mainly used to measure slow dynamics using synchrotron sources. Here the authors demonstrate the split-and- delay pulse set-up to study nanosecond dynamics of gold nanoparticles using XPCS with free electron
W. Roseker, S. O. Hruszkewycz, F. Lehmkühler, M. Walther, H. Schulte-Schrepping, S. Lee, T. Osaka, L. Strüder, R. Hartmann, M. Sikorski, S. Song, A. Robert, P. H. Fuoss, M. Sutton, G. B. Stephenson, G. Grübel   +15 more
doaj   +2 more sources

Ferroelectric domain wall dynamics characterized with X-ray photon correlation spectroscopy. [PDF]

Proc Natl Acad Sci U S A, 2018
Significance The dynamics in many complex systems is essentially heterogeneous and involves a series of discrete events—in particular, local structural changes. The nature and scale of these changes may vary greatly, ranging from rearrangements of atomic positions during phase transitions to displacements of tectonic plates during earthquakes.
Gorfman S, Bokov AA, Davtyan A, Reiser M, Xie Y, Ye ZG, Zozulya AV, Sprung M, Pietsch U, Gutt C.   +9 more
europepmc   +5 more sources

Direct observation of ultrafast cluster dynamics in supercritical carbon dioxide using X-ray Photon Correlation Spectroscopy [PDF]

Nature Communications
Supercritical fluids exhibit distinct thermodynamic and transport properties, making them of particular interest for a wide range of scientific and engineering applications.
Arijit Majumdar, Haoyuan Li, Priyanka Muhunthan, Alexander Späh, Sanghoon Song, Yanwen Sun, Matthieu Chollet, Dimosthenis Sokaras, Diling Zhu, Matthias Ihme   +9 more
doaj   +2 more sources

Structural dependency of polymer dynamics by means of small-angle X-ray photon correlation spectroscopy and wide-angle X-ray scattering on the D2AM beamline [PDF]

Journal of Synchrotron Radiation
X-ray photon correlation spectroscopy (XPCS) has become a pivotal technique for exploring nanoscale dynamic phenomena across various materials, facilitated by advancements in synchrotron radiation sources and beamline upgrades.
Grégory Stoclet, Duncan Schwaller, Romain Garlet, Frédéric Livet, Gilbert A. Chahine, Nils Blanc, Maxime Dupraz   +6 more
doaj   +2 more sources

AI-NERD: Elucidation of relaxation dynamics beyond equilibrium through AI-informed X-ray photon correlation spectroscopy [PDF]

Nature Communications
Understanding and interpreting dynamics of functional materials in situ is a grand challenge in physics and materials science due to the difficulty of experimentally probing materials at varied length and time scales.
James P. Horwath, Xiao-Min Lin, Hongrui He, Qingteng Zhang, Eric M. Dufresne, Miaoqi Chu, Subramanian K.R.S. Sankaranarayanan, Wei Chen, Suresh Narayanan, Mathew J. Cherukara   +9 more
doaj   +2 more sources

Multicomponent dynamics in amorphous ice studied using X-ray photon correlation spectroscopy at elevated pressure and cryogenic temperatures [PDF]

Communications Chemistry
Knowing the pressure dependence of glass forming liquids is important in various contexts. Here, we study the case of supercooled water, which has at least two different amorphous states with different densities.
Aigerim Karina, Hailong Li, Tobias Eklund, Marjorie Ladd-Parada, Bernhard Massani, Mariia Filianina, Neha Kondedan, Andreas Rydh, Klara Holl, Ryan Trevorah, Simo Huotari, Robert P. C. Bauer, Claudia Goy, Nele N. Striker, Francesco Dallari, Fabian Westermeier, Michael Sprung, Felix Lehmkühler, Katrin Amann-Winkel   +18 more
doaj   +2 more sources

Multi-speckle X-ray photon correlation spectroscopy in the ultra-small-angle X-ray scattering range. [PDF]

J Synchrotron Radiat, 2016
Multi-speckle X-ray photon correlation spectroscopy (XPCS) measurements in the ultra-small-angle range are performed using a long pinhole collimation instrument in combination with two-dimensional photon-counting and high-sensitivity imaging detectors.
Möller J, Chushkin Y, Prevost S, Narayanan T.   +3 more
europepmc   +5 more sources