Results 221 to 230 of about 10,063 (256)

Light-Optical Analogs of X-Ray Diffraction Patterns

American Journal of Physics, 1961
Masks containing repeating arrays of holes were prepared to simulate the molecular structure of arbitrary crystals. These masks, after photographic reduction, were used for Fraunhofer-type light diffraction and the resulting diffraction patterns compared with x-ray diagrams.
Jurgen R. Meyer-Arendt, John K. Wood
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Diffraction limited X-ray optics: technology, metrology, applications

Physics-Uspekhi, 2019
Abstract Progress in the fabrication technology of normal incidence multilayer interference mirrors permits the traditional optical methods of microscopy, astronomy, and lithography to be transferred to the vacuum ultraviolet (VUV, wavelength: 10–200 nm) and the long-wavelength part of the soft X-ray (SXR, wavelength: 2–10 nm) ranges.
Nikolai I. Chkhalo, Ilya V. Malyshev, Alexey E. Pestov, Vladimir N. Polkovnikov, Nikolai N. Salashchenko, Mikhail N. Toropov   +5 more
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X-ray and optical diffraction studies of bacterial flagella

Journal of Molecular Biology, 1971
Abstract Fibre preparations suitable for X-ray analysis have been made from flagella of different species of bacteria. The high-angle X-ray patterns obtained with preparations from different species are all closely similar and show the presence of a 52 A periodicity.
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An Optically Focusing X-Ray Diffraction Camera

Proceedings of the Physical Society. Section B, 1955
An optically focusing X-ray diffraction camera is used to obtain low angle diffraction photographs. Focusing is accomplished by total external reflection either by one elastically bent optical flat to form a line focus, or by two crossed flats to form a point focus. The beam is partially monochromatized and its intensity is high.
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Shaping X-rays by diffractive coded nano-optics

Microelectronic Engineering, 2003
In this paper we report results obtained in the fabrication and use of novel coded diffractive nano-optics that, beyond focusing, can perform new optical functions. In particular, the intensity of light in the space beyond the optical elements can be redistributed with almost complete freedom.
E. Di Fabrizio, S. Cabrini, D. Cojoc, F. Romanato, L. Businaro, M. Altissimo, B. Kaulich, T. Wilhein, J. Susini, DE VITTORIO, Massimo, E. Vitale, G. Gigli, CINGOLANI, Roberto   +12 more
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Diffractive x-ray optics using production fabrication methods

Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena, 2003
Zone plates are the key focusing element for many x-ray (7–20 keV) and soft x-ray (200–500 eV) applications, yet, production with electron-beam lithography poses obstacles to their widespread availability. In addition, fabrication processes to date have limited the studies of amplitude Bragg–Fresnel-type elements in the hard x-ray regime. We report new
A. Stein, C. Jacobsen, K. Evans-Lutterodt, D. M. Tennant, G. Bogart, F. Klemens, L. E. Ocola, B. J. Choi, S. V. Sreenivasan   +8 more
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Optical alignment device for x-ray diffraction systems

Review of Scientific Instruments, 1988
A device is described which enables x-ray diffraction systems to be aligned optically using a collimated laser beam to mimic the x-ray beam path through the system. Alignment using the device is faster and safer than the conventional procedures.
S. Prawer, S. W. Wilkins
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Novel diffractive optics for x-ray beam shaping

SPIE Proceedings, 2002
In our days, there is an increased interest for extreme ultraviolet and x-ray microscopy, which is mainly due to the availability of nearly ideal optical sources for diffractive optics. Synchrotrons of the latest generation and free electron lasers (in the near future) are sources that can produce x-ray beams with low divergence, whose wavelength can ...
Enzo M. Di Fabrizio, Dan Cojoc, Stefano Cabrini, Burkhard Kaulich, Thomas Wilhein, Jean Susini   +5 more
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Singular and Other Novel X-ray Diffractive Optics

Frontiers in Optics 2009/Laser Science XXV/Fall 2009 OSA Optics & Photonics Technical Digest, 2009
Singular and other novel X-ray diffractive optics have been developed for X-ray microscopy. These optics enhance contrast and resolution by enabling phase contrast, extended depth of field, and other imaging capabilities.
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Combined Microstructure X-Ray Optics; Multilayer Diffraction Gratings

MRS Proceedings, 1987
ABSTRACTMultilayers are man-made microstructures engineered to vary in depth that are now of sufficient quality to be used as x-ray, soft x-ray and extreme ultraviolet optics. Gratings are in-plane man-made microstructures which have been used as optic elements for most of this century.
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