Results 121 to 130 of about 95,748 (273)

Optimizing the signal-to-noise ratio for X-ray photon correlation spectroscopy

Journal of Synchrotron Radiation, 2006
An analysis is presented of how to optimize the experimental beamline configuration for achieving the best possible signal-to-noise ratio (SNR) in X-ray photon correlation spectroscopy experiments using area detectors. It is shown that there exists an optimum detector distance; namely, the highest SNR is achieved by matching the angular pixel size with
P, Falus, L B, Lurio, S G J, Mochrie
openaire   +2 more sources

Electro‐Chemo‐Mechanical Coupling in Hf0.5Zr0.5O2 Ferroionic Heterostructures

Advanced Functional Materials, EarlyView.
Schematic of a ferroionic HZO heterostructure where epitaxial interfaces enable dynamic oxygen‐vacancy exchange, coupling ionic and ferroelectric degrees of freedom. Vacancy‐mediated polarization modulation biases HZO polymorphism, suppresses leakage, and enhances piezoelectric response, yielding distinct butterfly‐loop evolution and diode‐like ...
Achilles Bergne, Denis Alikin, Milica Vasiljevic, Victor B. Tinti, Javier Zamudio‐García, Leonardo Soares de Oliveira, Megan Landberg, Dimitrios Koukoulis, Huaiyu Chen, Jesper Wallentin, David Marrero‐López, Astri Bjørnetun Haugen, Sizhao Huang, Dennis Christensen, Nini Pryds, Alexander Tselev, Andrei Kholkin, Vincenzo Esposito   +17 more
wiley   +1 more source

Hard X-rays as pump and probe of atomic motion in oxide glasses

Scientific Reports, 2017
Nowadays powerful X-ray sources like synchrotrons and free-electron lasers are considered as ultimate tools for probing microscopic properties in materials.
B. Ruta, F. Zontone, Y. Chushkin, G. Baldi, G. Pintori, G. Monaco, B. Rufflé, W. Kob   +7 more
doaj   +1 more source

Beyond the Edge: Charge‐Transfer Excitons in Organic Donor‐Acceptor Cocrystals

Advanced Functional Materials, EarlyView.
Complex excitonic landscapes in acene–perfluoroacene cocrystals are unveiled by polarization‐resolved optical spectroscopy and many‐body theory. This systematic study of a prototypical model system for weakly interacting donor–acceptor compounds challenges common views of charge‐transfer excitons, providing a refined conceptual framework for ...
Sebastian Anhäuser, Ana M. Valencia, Sergei I. Ivlev, Marc Zeplichal, Andreas Terfort, Caterina Cocchi, Gregor Witte   +6 more
wiley   +1 more source

Real-time tracking of curing process of an epoxy adhesive by X-ray photon correlation spectroscopy

Frontiers in Soft Matter
Introduction: Cross-linkable polymers are in widespread use in a variety of industries because of their thermomechanical toughness, chemical resistance, and adhesive strength.
Leonidas Tsapatsaris, Lutz Wiegart, Stanislas Petrash, Tobias Baumeister, Thomas Engels, Maya Endoh, Tadanori Koga, Tadanori Koga   +7 more
doaj   +1 more source

CATALYSTS FOR ANODE OXIDATION OF FORMIC ACID ON CARBON NANOTUBES "TAUNIT"

Тонкие химические технологии, 2016
Platinum-palladium/carbon nanjtubes (CNT) carbon nanocomposites were synthesized by chemical reduction of ions in water-organic solutions of reverse microemulsions.
N. A. Yashtulov, M. V. Lebedeva, S. M. Pestov   +2 more
doaj   +1 more source

Pushing x-ray photon correlation spectroscopy beyond the continuous frame rate limit

Optics Express, 2016
We demonstrate delayed-frame X-ray Photon Correlation Spectroscopy with 120 microsecond time resolution, limited only by sample scattering rates, with a prototype Pixel-array detector capable of taking two image frames separated by 153 ns or less. Although the overall frame rate is currently limited to about 4 frame pairs per second, we easily measured
Eric M, Dufresne, Suresh, Narayanan, Alec R, Sandy, David M, Kline, Qingteng, Zhang, Eric C, Landahl, Steve, Ross   +6 more
openaire   +2 more sources

Synergistic All‐in‐One Electroceutical Platform Utilizing a Plasma–Photodynamic Hybrid Approach for Enhanced Wound Healing

Advanced Functional Materials, EarlyView.
A flexible hybrid patch integrating a robust cold atmospheric plasma (CAP) system with a high‐power, ultrathin bio‐OLED was developed to enable synergistic wound healing. This multimodal therapy, combining plasma and photodynamic treatment, enhanced angiogenesis, cell proliferation, and collagen deposition, demonstrating superior in vivo efficacy and ...
Jun‐Yeop Song, Hyun Cheol Bang, Young Hyun Son, Dae‐In Ha, Eun‐Ju Hong, Sun‐Woo Lee, Jeongsook Kim, Doyeong Kim, Sang‐Min Park, Kyu Pil Lee, Hyo‐Jung Kwon, Jeong Hyun Kwon   +11 more
wiley   +1 more source

Dynamics of soft nanoparticle suspensions at hard X-ray FEL sources below the radiation-damage threshold

IUCrJ, 2018
The application of X-ray photon correlation spectroscopy (XPCS) at free-electron laser (FEL) facilities enables, for the first time, the study of dynamics on a (sub-)nanometre scale in an unreached time range between femtoseconds and seconds.
Felix Lehmkühler, Joana Valerio, Dina Sheyfer, Wojciech Roseker, Martin A. Schroer, Birgit Fischer, Kensuke Tono, Makina Yabashi, Tetsuya Ishikawa, Gerhard Grübel   +9 more
doaj   +1 more source

Meniscus Pixel Printing for Contact‐Lens Vision Sensing and Robotic Control

Advanced Functional Materials, EarlyView.
A visual‐sensing contact lens is enabled by meniscus pixel printing (MPP), which rapidly patterns a 200 µm perovskite photodetector pixel in 1 s without masks, vacuum processing, or bulky equipment. A deep‐learning‐based super‐resolution reconstructs sparse on‐lens signals into 80 × 80 high‐resolution visual information, while AI‐driven eye‐tracking ...
Byung‐Hoon Gong, Dohyean Kim, Jiyun Jeong, Taekyeong Kim, Soon‐sung Kwon, Junyoung Seo, Il Jeon, Im Doo Jung   +7 more
wiley   +1 more source