Results 21 to 30 of about 27,037 (263)
Optical loss due to diffraction by concentrator Fresnel lenses [PDF]
AIP Conference Proceedings, 2014 Fresnel lenses are widely used in concentrating photovoltaic (CPV) systems as a primary optical element. They focus sunlight on small solar cells or on the entrance apertures of secondary optical elements. A Fresnel lens consists of several prism rings and diffraction by these prism rings is unavoidable.
Hornung, T., Nitz, P.
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Field canalization using anisotropic 2D plasmonics
npj 2D Materials and Applications, 2022 Optical devices capable of suppressing diffraction nature of light are of great technological importance to many nanophotonic applications. One important technique to achieve diffractionless optics is to exploit field canalization effect.
Po-Han Chang, Charles Lin, Amr S. Helmy
doaj +1 more source
Diffraction Losses in a Stack of Diamond X-Ray Lenses
PhotonicsCompound refractive lenses, crafted from single-crystal materials like diamond and silicon, are increasingly favored, particularly in cutting-edge facilities, such as free electron lasers and fourth-generation synchrotrons.
Nataliya Klimova, Anatoly Snigirev
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Loss of coherence in double-slit diffraction experiments [PDF]
Physical Review A, 2005 8 pages, 3 ...
Sanz, A.S., Borondo, F., Bastiaans, M.J.
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Diffraction of electromagnetic waves on the resonance graphene metasurfaces [PDF]
ITM Web of Conferences, 2019 By using three independent numerical approaches to solve the 3D diffraction boundary problems the reflection, transmittance coefficients and losses of metasurfaces of graphene strip elements, depending on the frequency and values of the chemical ...
Lerer Alexander M., Makeeva Galina S.
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Structural and biochemical analysis of a B12 superbinder
FEBS Letters, EarlyView.BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices +3 more
wiley +1 more source
The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation
FEBS Letters, EarlyView.Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge +6 more
wiley +1 more source
Barium Titanate/Gadolinium Ferrite: A New Material Composite to Store Energy
Nanomaterials, 2023 This work investigates the dielectric properties of barium titanate/gadolinium ferrite ceramic composites, with different concentrations of each material.
Clara Baivier +4 more
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FEBS Open Bio, EarlyView.In this study, a novel esterase from the thermoacidophilic archaeon Thermoplasma acidophilum was biochemically and structurally characterized. Our results demonstrate that Ta0887 is a highly thermostable esterase that preferentially hydrolyzes p‐nitrophenyl hexanoate and possesses an α‐helical cap domain that likely contributes to its substrate ...
Alejandro Delgado‐Rey +4 more
wiley +1 more source
Occurrence and speciation of copper in slags obtained during the pyrometallurgical processing of chalcopyrite concentrates at the Huelva smelter (Spain) [PDF]
Journal of Mining and Metallurgy. Section B: Metallurgy, 2012 Slags involved in smelting-converting-refining operations to produce blister copper at the Atlantic Copper smelter, in Huelva (Spain), have been investigated by quantitative electron microprobe analysis, X-ray diffraction and digital imaging ...
Fernández-Caliani J.C. +3 more
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