Results 11 to 20 of about 87,415 (264)

In situ coherent diffractive imaging [PDF]

Nature Communications, 2018
AbstractCoherent diffractive imaging (CDI) has been widely applied in the physical and biological sciences using synchrotron radiation, X-ray free-electron laser, high harmonic generation, electrons, and optical lasers. One of CDI’s important applications is to probe dynamic phenomena with high spatiotemporal resolution. Here, we report the development
Lo, Yuan Hung, Zhao, Lingrong, Gallagher-Jones, Marcus, Rana, Arjun, J. Lodico, Jared, Xiao, Weikun, Regan, BC, Miao, Jianwei   +7 more
openaire   +6 more sources

Characterization of Defocused Coherent Imaging Systems with Periodic Objects. [PDF]

Sensors (Basel)
Recent advancements in quantum and quantum-inspired imaging techniques have enabled high-resolution 3D imaging through photon correlations. These techniques exhibit reduced degradation of image resolution for out-of-focus samples compared to conventional
Massaro G, D'Angelo M.
europepmc   +2 more sources

Coherent imaging at the diffraction limit. [PDF]

J Synchrotron Radiat, 2014
X-ray ptychography, a scanning coherent diffractive imaging technique, holds promise for imaging with dose-limited resolution and sensitivity. If the foreseen increase of coherent flux by orders of magnitude can be matched by additional technological and analytical advances, ptychography may approach imaging speeds familiar from full-field methods ...
Thibault P, Guizar-Sicairos M, Menzel A.
europepmc   +7 more sources

Electron-ion coincidence measurements of molecular dynamics with intense X-ray pulses

Scientific Reports, 2021
Molecules can sequentially absorb multiple photons when irradiated by an intense X-ray pulse from a free-electron laser. If the time delay between two photoabsorption events can be determined, this enables pump-probe experiments with a single X-ray pulse,
Xiang Li, Ludger Inhester, Timur Osipov, Rebecca Boll, Ryan Coffee, James Cryan, Ave Gatton, Tais Gorkhover, Gregor Hartman, Markus Ilchen, André Knie, Ming-Fu Lin, Michael P. Minitti, Clemens Weninger, Thomas J. A. Wolf, Sang-Kil Son, Robin Santra, Daniel Rolles, Artem Rudenko, Peter Walter   +19 more
doaj   +1 more source

X-ray in-line holography and holotomography at the NanoMAX beamline

Journal of Synchrotron Radiation, 2022
Coherent X-ray imaging techniques, such as in-line holography, exploit the high brilliance provided by diffraction-limited storage rings to perform imaging sensitive to the electron density through contrast due to the phase shift, rather than ...
Sebastian Kalbfleisch, Yuhe Zhang, Maik Kahnt, Khachiwan Buakor, Max Langer, Till Dreier, Hanna Dierks, Philip Stjärneblad, Emanuel Larsson, Korneliya Gordeyeva, Lert Chayanun, Daniel Söderberg, Jesper Wallentin, Martin Bech, Pablo Villanueva-Perez   +14 more
doaj   +1 more source

Heterogeneity in M. tuberculosis β-lactamase inhibition by Sulbactam

Nature Communications, 2023
For decades, researchers have elucidated essential enzymatic functions on the atomic length scale by tracing atomic positions in real-time. Our work builds on possibilities unleashed by mix-and-inject serial crystallography (MISC) at X-ray free electron ...
Tek Narsingh Malla, Kara Zielinski, Luis Aldama, Sasa Bajt, Denisse Feliz, Brendon Hayes, Mark Hunter, Christopher Kupitz, Stella Lisova, Juraj Knoska, Jose Manuel Martin-Garcia, Valerio Mariani, Suraj Pandey, Ishwor Poudyal, Raymond G. Sierra, Alexandra Tolstikova, Oleksandr Yefanov, Chung Hong Yoon, Abbas Ourmazd, Petra Fromme, Peter Schwander, Anton Barty, Henry N. Chapman, Emina A. Stojkovic, Alexander Batyuk, Sébastien Boutet, George N. Phillips, Lois Pollack, Marius Schmidt   +28 more
doaj   +1 more source

An Experimental Ultrasound Database for Tomographic Imaging

Applied Sciences, 2022
In the framework of non-destructive testing and imaging, ultrasound tomography can have an important role in several applications, especially in the biomedical field.
Stefano Franceschini, Michele Ambrosanio, Angelo Gifuni, Giuseppe Grassini, Fabio Baselice   +4 more
doaj   +1 more source

An Experimental Ultrasound System for Qualitative Tomographic Imaging

Sensors, 2022
The advancement of new promising techniques in the field of biomedical imaging has always been paramount for the research community. Recently, ultrasound tomography has proved to be a good candidate for non-invasive and safe diagnostics.
Michele Ambrosanio, Stefano Franceschini, Maria Maddalena Autorino, Fabio Baselice, Vito Pascazio   +4 more
doaj   +1 more source

Holographic superresolution using spatial light modulator [PDF]

Journal of the European Optical Society-Rapid Publications, 2013
This paper describes a technique of superresolution using a reflective mode spatial light modulator, a coherent source of light, and a transmission mode object placed in the input plane of an imaging system, in particular we are using for the ...
Hussain A., Martínez J. L., Campos J.
doaj   +1 more source

A Light-Ray Approach to Fractional Fourier Optics

Fractal and Fractional, 2023
A light ray in space is characterized by two vectors: (i) a transverse spatial vector associated with the point where the ray intersects a given spherical cap; (ii) an angular-frequency vector which defines the ray direction of propagation. Given a light
Éric Fogret, Pierre Pellat-Finet
doaj   +1 more source