Results 41 to 50 of about 70,372 (266)

3D structure reconstruction of nanoengineered polymeric capsules using Coherent X-Ray diffraction imaging

MethodsX, 2021
Nanoengineered polymeric capsules (NPCs) are smart objects that can be filled in with some desired chemical substance. They are considered among the most versatile tools in biology, pharmacy, medicine etc. Most often they have been used as containers for
S. Erokhina, L. Pastorino, D. Di Lisa, A.G. Kiiamov, D.A. Tayurskii, S. Iannotta, V. Erokhin, A.R. Faizullina   +7 more
doaj   +1 more source

Performance Evaluation of Deep Neural Network Model for Coherent X-ray Imaging

AI, 2022
We present a supervised deep neural network model for phase retrieval of coherent X-ray imaging and evaluate the performance. A supervised deep-learning-based approach requires a large amount of pre-training datasets. In most proposed models, the various
Jong Woo Kim, Marc Messerschmidt, William S. Graves   +2 more
doaj   +1 more source

The influence of non-imaging detector design on heralded ghost-imaging and ghost-diffraction examined using a triggered ICCD came [PDF]

, 2013
Ghost imaging and ghost diffraction can be realized by using the spatial correlations between signal and idler photons produced by spontaneous parametric down-conversion. If an object is placed in the signal (idler) path, the spatial correlations between
Anderson, G., Aspden, R.S., Boyd, R.W., Morris, P.A., Padgett, M.J., Tasca, D.S.   +5 more
core   +1 more source

Holography and Coherent Diffraction with Low-Energy Electrons: A Route towards Structural Biology at the Single Molecule Level [PDF]

, 2015
The current state of the art in structural biology is led by NMR, X-ray crystallography and TEM investigations. These powerful tools however all rely on averaging over a large ensemble of molecules.
Escher, Conrad, Fink, Hans-Werner, Latychevskaia, Tatiana, Longchamp, Jean-Nicolas   +3 more
core   +1 more source

Wavefront Modulation Coherent Diffractive Imaging [PDF]

AIP Conference Proceedings, 2011
Lens‐based imaging is able to directly provide an image of objects. The high quality lenses required, however, are not readily available for x‐rays. Coherent diffraction imaging (CDI) bypasses this difficulty by numerically inverting the diffraction process undertaken by an object wave.
F. Zhang, J. M. Rodenburg, Ian McNulty, Catherine Eyberger, Barry Lai   +4 more
openaire   +1 more source

Fresnel Coherent Diffraction Imaging Without Wavefront Priors

Photonics
Fresnel diffraction plays a critical role in coherent diffraction imaging and holography. Experimental setups for these techniques are often designed based on plane-wave illumination.
Ling Bai, Wen Cao, Yueshu Xu, Cuifang Kuang, Xu Liu   +4 more
doaj   +1 more source

Solution of the phase problem for coherent scattering from a disordered system of identical particles

New Journal of Physics, 2013
While the implementation of single-particle coherent diffraction imaging for non-crystalline particles is complicated by current limitations on photon flux, hit rate and sample delivery, the concept of many-particle coherent diffraction imaging offers an
R P Kurta, R Dronyak, M Altarelli, E Weckert, I A Vartanyants   +4 more
doaj   +1 more source

Coherent Diffraction Imaging of Single 95nm Nanowires

, 2008
Photonic or electronic confinement effects in nanostructures become significant when one of their dimension is in the 5-300 nm range. Improving their development requires the ability to study their structure - shape, strain field, interdiffusion maps ...
Joël Eymery, Pascal Gentile, R. W. Gerchberg, Robert Koester, S. Marchesini, Vincent Favre-Nicolin   +5 more
core   +1 more source

Coherent Electron Source for Ultrafast Electron Diffraction and Imaging

EPJ Web of Conferences, 2013
We numerically investigate the suitability of photoexcited nanotips as a source of coherent femtosecond single electron pulses for ultrafast surface-sensitive electron diffraction and non-destructive imaging with low-energy electrons.
Xu C., Ernstorfer R., Paarmann A., Müller M.   +3 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