Results 71 to 80 of about 39,722 (316)

Simulation of Fresnel Zone Plate Imaging Performance with Number of Zones

open access: yesSensors, 2020
In recent years, integral imaging, a promising three-dimensional imaging technology, has attracted more and more attention for its broad applications in robotics, computational vision, and medical diagnostics. In the visible spectrum, an integral imaging
Ying Li   +2 more
doaj   +1 more source

Cu‐Based MOF/TiO2 Composite Nanomaterials for Photocatalytic Hydrogen Generation and the Role of Copper

open access: yesAdvanced Functional Materials, EarlyView.
HKUST‐1/TiO2 composite materials show a very high photocatalytic hydrogen evolution rate which increases as a function of the irradiation time until reaching a plateau and even surpasses the performance of the 1%Pt/TiO2 material after three photocatalytic cycles.
Alisha Khan   +9 more
wiley   +1 more source

Optical classification of images at different wavelengths using spectral diffractive neural networks

open access: yesКомпьютерная оптика
A solution of several different problems of image classification at several different wavelengths using a diffractive neural network (DNN) consisting of sequentially located phase diffractive optical elements (DOEs) is considered.
G.A. Motz   +5 more
doaj   +1 more source

Double-slit and electromagnetic models to complete quantum mechanics

open access: yes, 2017
We analyze a realistic microscopic model for electronic scattering with the neutral differential delay equations of motion of point charges of the Wheeler-Feynman electrodynamics.
De Luca, Jayme
core   +1 more source

Atomic Size Misfit for Electrocatalytic Small Molecule Activation

open access: yesAdvanced Functional Materials, EarlyView.
This review explores the application and mechanisms of atomic size misfit in catalysis for small molecule activation, focusing on how structural defects and electronic properties can effectively lower the energy barriers of chemical bonds in molecules like H2O, CO2, and N2.
Ping Hong   +3 more
wiley   +1 more source

X-ray Resonant Magnetic Scattering : Polarisation Dependence in the non-spherical case

open access: yes, 2006
We develop a simple tensorial contraction method to obtain analytical formula for X-ray resonant magnetic scattering. We apply the method considering first electric dipole-dipole and electric quadrupole-quadrupole scattering in the isolated atom ...
Alessandro Mirone   +2 more
core   +1 more source

Copper‐based Materials for Photo and Electrocatalytic Process: Advancing Renewable Energy and Environmental Applications

open access: yesAdvanced Functional Materials, EarlyView.
Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida   +16 more
wiley   +1 more source

Nanometric Surface Finish Measurement by Optical Diffraction

open access: yesMeasurement + Control, 1991
The use of light scattering or diffraction for the determination of surface roughness of machined metal components has been investigated by many researchers.
Jan H Rakels
doaj   +1 more source

Generalised coupled-wave theory of scalar volume diffraction

open access: yesElectronics Letters, 1984
An extended coupled-wave theory of volume phase holography is developed using Fourier techniques. Fresnel, as well as Bragg, diffraction effects are incorporated for general high-efficiency transmission gratings illuminated by general beams. The method is illustrated by a numerical example.
J.W. Lewis, L. Solymar
openaire   +1 more source

Home - About - Disclaimer - Privacy