Results 21 to 30 of about 1,435,766 (361)

Reconfigurable all-dielectric metalens with diffraction-limited performance [PDF]

Nature Communications, 2019
Active metasurfaces, whose optical properties can be modulated post-fabrication, have emerged as an intensively explored field in recent years. The efforts to date, however, still face major performance limitations in tuning range, optical quality, and ...
M. Shalaginov, S. An, Yifei Zhang, Fan Yang, P. Su, V. Liberman, J. Chou, Christopher M. Roberts, M. Kang, C. Ríos, Qingyang Du, Clayton Fowler, A. Agarwal, K. Richardson, C. Rivero‐Baleine, Hualiang Zhang, Juejun Hu, T. Gu   +17 more
semanticscholar   +1 more source

Chemical, isotopic and gas composition of the first-year sea ice in 2013-2015 from the data of cores taken at the BARNEO drifting stations

Лëд и снег, 2019
As a result of the work performed at the BARNEO drifting stations (2013-2015 in the polar region of the Arctic ocean), a comprehensive testing was carried out and new data were obtained on the structure of one-year sea ice, its salinity, the distribution
A. I. Kizyakov, I. D. Streletskaya, A. V. Savenko, I. A. Kraynyukova, I. V. Tokarev   +4 more
doaj   +1 more source

iMOSFLM: a new graphical interface for diffraction-image processing with MOSFLM

Acta Crystallographica Section D: Biological Crystallography, 2011
A new graphical user interface to the MOSFLM program has been developed to simplify the processing of macromolecular diffraction data. The interface, iMOSFLM, allows data processing via a series of clearly defined tasks and provides visual feedback on ...
T. Battye, Luke Kontogiannis, O. Johnson, H. Powell, A. Leslie   +4 more
semanticscholar   +1 more source

Crystal Structure of Fosfomycin Tromethamine, (C₄H₁₂NO₃)(C₃H₆O₄P), from Synchrotron Powder Diffraction Data and Density Functional Theory

Crystals, 2019
The crystal structure of fosfomycin tromethamine has been solved and refined using synchrotron X-ray powder diffraction data, and optimized using density functional techniques.
Zachary R. Butler, James A. Kaduk, Amy M. Gindhart, Thomas N. Blanton   +3 more
doaj   +1 more source

Experimental review of diffractive phenomena [PDF]

Nucl.Phys. A755 (2005) 123-132, 2005
A review is given of the measurements of the hard diffractive interactions in recent years from two high-energy colliders, the HERA $ep$ collider and the Tevatron $p\bar{p}$ collider. The structure of the diffractive exchange in terms of partons, the factorisation properties and the ratio of diffractive to non-diffractive cross sections are discussed.
arxiv   +1 more source

The Powder Diffraction File: a quality materials characterization database

Powder Diffraction, 2019
The ICDD's Powder Diffraction File™ (PDF®) is a database of inorganic and organic diffraction data used for phase identification and materials characterization by powder diffraction. The PDF has been available for over 75 years and finds application in X-
S. Gates-Rector, T. Blanton
semanticscholar   +1 more source

Origin of color variations of thin, nano-sized layers of volcanic cinder from the Sierra Negra Volcano of the Galapagos Islands

Uniciencia, 2021
Volcanic cinder, also known as scoria, is an extrusive igneous rock that forms when gas-rich magmas of basaltic or andesitic composition cool quickly.
Alexis Debut, Theofilos Toulkeridis, Andrea V. Vaca, Carlos R. Arroyo   +3 more
doaj   +1 more source

Color Dipole Systematics of the Diffraction Slope in Diffractive Photo- and Electroproduction of Vector Mesons [PDF]

Phys.Lett.B497:235-242,2001, 2000
We present the first evaluation of the color dipole diffraction slope from the data on diffractive photo- and electroproduction of vector mesons. The energy and dipole size dependence of the found dipole diffraction slope are consistent with the color dipole gBFKL dynamics.
arxiv   +1 more source

Fourier transform infrared spectrophotometry and X-ray powder diffractometry as complementary techniques in characterizing clay size fraction of kaolin

Journal of Applied Sciences and Environmental Management, 2005
This study aimed at demonstrating complementary roles offered by both Fourier transform infrared (FTIR) spectrophotometry and x-ray powder diffraction (XRPD) techniques in characterizing clay size fraction of kaolins.
Georges-Ivo E Ekosse
doaj   +1 more source

Squiral Diffraction [PDF]

, 2013
The Thue-Morse system is a paradigm of singular continuous diffraction in one dimension. Here, we consider a planar system, constructed by a bijective block substitution rule, which is locally equivalent to the squiral inflation rule. For balanced weights, its diffraction is purely singular continuous. The diffraction measure is a two-dimensional Riesz
Michael Baake, Uwe Grimm
openaire   +3 more sources