Results 151 to 160 of about 14,611,742 (406)

Vectorial structure of nonparaxial electromagnetic beams

Journal of the Optical Society of America A, 2001
A representation of the general solution of the Maxwell equations is proposed in terms of the plane-wave spectrum of the electromagnetic field. In this representation the electric field solution is written as a sum of two terms that are orthogonal to each other at the far field: One is transverse to the propagation axis, and the magnetic field ...
Arturo Carnicer, Rosario Martínez-Herrero, Pedro M. Mejías, Salvador Bosch   +3 more
openaire   +4 more sources

Robust Collimation Control of Laser-Generated Ion Beam [PDF]

arXiv, 2015
The robustness of a structured collimation device is discussed for an intense-laser-produced ion beam. In this paper the ion beam collimation is realized by the solid structured collimation device, which produces the transverse electric field; the electric field contributes to reduce the ion beam transverse velocity and collimate the ion beam.
arxiv  

Evaluation of OPTOS wide‐field fundus image projections for radiotherapy planning of uveal melanoma

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose To investigate the relationship between the stereographic and azimuthal equidistant projection (AEP) of the human retina for radiotherapy planning with OPTOS optomap wide‐field fundus images (Optos, UK). Further, the geometric accuracy of an OPTOS fundus image is quantified.
Jörg Wulff, Benjamin Koska, Michael Giese, Christian Bäumer, Ronald Richter, Andreas Foerster, Nikolaos E. Bechrakis, Beate Timmermann   +7 more
wiley   +1 more source

Design of the Miniaturized and Thin Sliced-Type Beam Switching-Controlled Horn Antenna for D-Band

IEEE Access
This paper proposes a design of a multilayer controlled beam horn antenna for the D-band. The multilayer design can achieve easy to control, low cost, and compact structure.
Ming-An Chung, Chia-Wei Lin, Ing-Peng Meiy   +2 more
doaj   +1 more source

Bending and Vibration Analysis of Flexoelectric Beam Structure on Linear Elastic Substrates. [PDF]

Micromachines (Basel), 2022
Zhang M, Zhou Z.
europepmc   +1 more source

Crack detection in beam-like structures

Engineering Structures, 2009
Fil: Rosales, Marta Beatriz. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Bahia Blanca; Argentina. Universidad Nacional del Sur.
Carlos P. Filipich, Carlos P. Filipich, Marta Beatriz Rosales, Marta Beatriz Rosales, Fernando Salvador Buezas, Fernando Salvador Buezas   +5 more
openaire   +3 more sources

Dispersion and localization in structured Rayleigh beams [PDF]

arXiv, 2014
This paper brings a comparative analysis between dynamic models of couple-stress elastic materials and structured Rayleigh beams on a Winkler foundation. Although physical phenomena have different physical origins, the underlying equations appear to be similar, and hence mathematical models have a lot in common.
arxiv  

Assessing proton plans with three different beam delivery systems versus photon plans for head and neck tumors

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose To compare plan quality among photon volumetric modulated arc therapy (VMAT) and intensity‐modulated proton therapy (IMPT) with robustness using three different proton beam delivery systems with various spot size (σ) ranges: cyclotron‐generated proton beams (CPBs) (σ: 2.7–7.0 mm), linear accelerator proton beams (LPBs) (σ: 2.9–5.5 mm),
Tara Gray, Chieh‐Wen Liu, Saeed Ahmed, Anna Maria Kolano, Jeremy Donaghue, Shlomo Koyfman, Neil Woody, Shauna R. Campbell, Jonathan B. Farr, Ping Xia   +9 more
wiley   +1 more source

Microstructure evolution，thermal cycling lifetime， and failure behavior analysis of YSZ thermal barrier coatings prepared by EB-PVD with different electron beam currents

Cailiao gongcheng
The electron beam-physical vapor deposition （EB-PVD） technology was employed to fabricate yttria-stabilized zirconia （YSZ） thermal barrier coatings at different electron beam currents （1.2，1.8，2.4 A）. The phase structure and microstructural morphology of
MU Rende, DING Ning, LIU Guanxi, LUO Yuqing, DAI Jianwei   +4 more
doaj   +1 more source

Rising complexity of the OAM beam structure as a way to a higher data capacity. [PDF]

Light Sci Appl, 2022
Pryamikov A.
europepmc   +1 more source