A deterministic representation of plane-wave interference

1988 ◽  
Vol 101 (3) ◽  
pp. 261-266
Author(s):  
G. Noe
Keyword(s):  
Plane Wave ◽  
Wave Interference

Optical vortex generation by three plane wave interference

2001 ◽  
Vol 198 (1-3) ◽  
pp. 21-27 ◽  
Author(s):  
Jan Masajada ◽  
Bogusława Dubik
Keyword(s):  
Plane Wave ◽  
Optical Vortex ◽  
Vortex Generation ◽  
Wave Interference

Generation and evolution of Vortex array with variable-ratio lateral-shearing interferometry

2022 ◽  
Author(s):  
yong li ◽  
Junyong Zhang ◽  
jianlang li
Keyword(s):  
Theoretical Analysis ◽  
Plane Wave ◽  
Topological Charge ◽  
Variable Ratio ◽  
Wave Interference ◽  
Lateral Shearing Interferometer ◽  
Lateral Shearing ◽  
Lateral Shearing Interferometry ◽  
Spot Array ◽  
Vortex Array

Abstract Different from the method by plane-wave interference, here an efficient approach is proposed to generate optical vortex array (VA) based on lateral-shearing interferometer (LSI), in which the evolution from light spot array to VA can be observed by continuously variable shear ratio in a certain range. VAs with topological charge 2 and 1 are simulated by software GLAD and proved to be effectiveness through optical experiment. Theoretical analysis and experimental results show that when the shear ratio approaches to zero, we can stably obtain a vortex array with high density and variable topological charge.

Plane wave interference: A didactic experiment to measure the wavelength of light

1998 ◽  
Vol 66 (6) ◽  
pp. 548-549 ◽  
Author(s):  
T. Catunda ◽  
J. Sartori ◽  
L. A. O. Nunes
Keyword(s):  
Plane Wave ◽  
Wave Interference

Theory and Errors in Stereo Electron Microscopy

1968 ◽  
Vol 26 ◽  
pp. 336-337
Author(s):  
J. M. Pankratz
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Plane Wave ◽  
Focal Length ◽  
Foil Thickness ◽  
Points Of Interest ◽  
Transmission Electron ◽  
Vertical Spacing ◽  
Illuminating System

It is often desirable in transmission electron microscopy to know the vertical spacing of points of interest within a specimen. However, in order to measure a stereo effect, one must have two pictures of the same area taken from different angles, and one must have also a formula for converting measured differences between corresponding points (parallax) into a height differential.Assume (a) that the impinging beam of electrons can be considered as a plane wave and (b) that the magnification is the same at the top and bottom of the specimen. The first assumption is good when the illuminating system is overfocused. The second assumption (the so-called “perspective error”) is good when the focal length is large (3 x 107Å) in relation to foil thickness (∼103 Å).

A hybrid Gaussian and plane wave density functional scheme

1997 ◽  
Vol 92 (3) ◽  
pp. 477-487 ◽  
Author(s):  
GERALD LIPPERT ◽  
JuRG HUTTER ◽  
MICHELE PARRINELLO
Keyword(s):  
Plane Wave ◽  
Density Functional ◽  
Functional Scheme

A Primary Study on Classical Particle Modeling of Electron-Wave Interference Systems

2014 ◽  
Vol 1 ◽  
pp. 324-327 ◽  
Author(s):  
Keisuke Nagata ◽  
Wataru Nakashima ◽  
Hisato Fujisaka ◽  
Takeshi Kamio ◽  
Kazuhisa Haeiwa
Keyword(s):  
Classical Particle ◽  
Primary Study ◽  
Electron Wave ◽  
Wave Interference ◽  
Particle Modeling

Evolution of the electronic structure of metallic multilayers from two to threedimensionality. A Full Potential Linearized Augmented Plane Wave calculation.

2002 ◽  
Vol 727 ◽  
Author(s):  
A. M. Mazzone
Keyword(s):  
Plane Wave ◽  
Density Of States ◽  
Noble Metals ◽  
Full Potential ◽  
Metallic Multilayers ◽  
Augmented Plane Wave ◽  
Narrow Bandwidth ◽  
Epitaxial Multilayers ◽  
Linearized Augmented Plane Wave ◽  
Wave Calculation

AbstractFull Potential Linearized Augmented Plane Wave calculations have been performed for epitaxial multilayers formed by the noble metals Ag and Cu with a thickness n up to 10 layers. The multilayers have a fcc lattice and are pure or compositionally modulated with a structure of the type Agn Cun or (AgCu)n. For n in the range 2,3 the density of states, evaluated at paramagnetic level, exhibits a sharp reduction of the bandwidth which is consistent with the reduced coordination of these structures. For n ≤ 5 the density of states in the central layers converges to the bulk value while the outer layers retain the narrow bandwidth found at n=2. Due to the absence of charge intermixing and hybridization, these features are shared by multilayers of all composition.

Interstitial vs. Substitutional Metal Insertion in V2O5 as Post-Lithium Ion Battery Cathode: A Comparative GGA/GGA+U Study with Localized Bases

2020 ◽  
Author(s):  
Daniel Koch ◽  
Sergei Manzhos
Keyword(s):  
Electronic Structure ◽  
Plane Wave ◽  
Transition Metal Oxides ◽  
Reasonable Agreement ◽  
Correction Term ◽  
Lithium Ion ◽  
Generalized Gradient ◽  
Main Group Metals ◽  
Generalized Gradient Approximation ◽  
Metal Insertion

<p></p><p>The generalized gradient approximation (GGA) often fails to correctly describe the electronic structure and thermochemistry of transition metal oxides and is commonly improved using an inexpensive correction term with a scaling parameter <i>U</i>. We tune <i>U</i> to reproduce experimental vanadium oxide redox energetics with a localized basis and a GGA functional. We find the value for <i>U</i> to be significantly lower than what is generally reported with plane-wave bases, with the uncorrected GGA results being in reasonable agreement with experiments. We use this computational setup to calculate interstitial and substitutional <a>insertion energies of main group metals in vanadium pentoxide</a> and find <a>interstitial doping to be thermodynamically favored</a>.</p><p></p>

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