Results 11 to 20 of about 10,063 (256)
Laguerre–Gauss and Hermite–Gauss soft X-ray states generated using diffractive optics [PDF]
Nature Photonics, 2019 Light’s capacity to carry angular momentum is integral to our knowledge of physics and ability to probe matter. In addition to spin, photons can occupy free-space orbital angular momentum eigenstates 1,2 .
Alexander, SJ +4 more
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Diffractive small angle X-ray scattering imaging for anisotropic structures
Nature Communications, 2019 Mesoscale investigations of material microarchitecture using small angle X-ray scattering (SAXS) methods have been limited by long measurement times. Here, the authors present an X-ray diffractive optics method which enables single shot acquisition of ...
Matias Kagias +7 more
doaj +2 more sources
Physical Review B, 2007 We present a formalism of x-ray dynamical diffraction from volume diffractive optics with large numerical aperture and high aspect ratio, in an analogy to the Takagi-Taupin equations for strained single crystals.
A. Authier +15 more
core +3 more sources
On the Properties of WC/SiC Multilayers
Applied Sciences, 2018 A study of the materials properties of WC/SiC multilayer coatings is presented. We investigated the dependence of interface and surface roughness, intrinsic stress, microstructure, chemical composition, and stoichiometry as a function of multilayer ...
Mauro Prasciolu, Saša Bajt
doaj +1 more source
Diffractive X-ray Telescopes [PDF]
, 2010 Diffractive X-ray telescopes using zone plates, phase Fresnel lenses, or related optical elements have the potential to provide astronomers with true imaging capability with resolution several orders of magnitude better than available in any other ...
Skinner, Gerald K.
core +3 more sources
Advanced X-ray diffractive optics
Journal of Physics: Conference Series, 2009 X-ray microscopy greatly benefits from the advances in x-ray optics. At the Paul Scherrer Institut, developments in x-ray diffractive optics include the manufacture and optimization of Fresnel zone plates (FZPs) and diffractive optical elements for both soft and hard x-ray regimes. In particular, we demonstrate here a novel method for the production of
Vila-Comamala, J +15 more
openaire +2 more sources
Demonstration of femtosecond X-ray pump X-ray probe diffraction on protein crystals
Structural Dynamics, 2018 The development of X-ray free-electron lasers (XFELs) has opened the possibility to investigate the ultrafast dynamics of biomacromolecules using X-ray diffraction.
Nadia L. Opara +19 more
doaj +1 more source
Beam-induced damage on diffractive hard X-ray optics [PDF]
Journal of Synchrotron Radiation, 2010 The issue of beam-induced damage on diffractive hard X-ray optics is addressed. For this purpose a systematic study on the radiation damage induced by a high-power X-ray beam is carried out in both ambient and inert atmospheres. Diffraction gratings fabricated by three different techniques are considered: electroplated Au gratings both with and without
Nygård, K. +9 more
openaire +2 more sources
Focusing Optics for High-Energy X-ray Diffraction
Journal of Synchrotron Radiation, 1998 Novel focusing optical devices have been developed for synchrotron radiation in the energy range 40–100 keV. Firstly, a narrow-band-pass focusing energy-tuneable fixed-exit monochromator was constructed by combining meridionally bent Laue and Bragg crystals.
Lienert, U. +10 more
openaire +3 more sources
Optical-approximation analysis of sidewall-spacing effects on the force between two squares with parallel sidewalls [PDF]
, 2007 Using the ray-optics approximation, we analyze the Casimir force in a two dimensional domain formed by two metallic blocks adjacent to parallel metallic sidewalls, which are separated from the blocks by a finite distance h.
Jaffe, Robert L. +3 more
core +1 more source