Results 51 to 60 of about 496,345 (292)
A wide-beam NCS algorithm for multi-receiver SAS based on azimuth spectrum superposition
Frontiers in Marine Science, 2023 The existing multi-receiver synthetic aperture sonar (SAS) imaging algorithms are suitable for narrow-beam width, which will lead to a decrease in imaging quality under wide-beam condition and are not in line with the development needs of SAS. We propose
Mingqiang Ning +5 more
doaj +1 more source
, 2019 We propose a method for numerical calculation of driving and detuning transverse beam coupling impedances of an asymmetric cavity. The method relies on eigenmode simulations and can be viewed as an alternative to time domain wakefield simulations.
Arsenyev, S., Salvant, B.
core +1 more source
Proton beam therapy should remain in the public domain [PDF]
Canadian Medical Association Journal, 2019 We would like to respond to the article “Proton beam therapy for cancer” by Tsang and Patel that was published recently in CMAJ .[1][1] As the authors state, radiotherapy is a critical element of treatment for one-third to half of all patients with cancer.
Tarek, Hijal +2 more
openaire +2 more sources
Thermoreflectance Detection of Point Defects Resulting from Focused Ion Beam Milling
Advanced Engineering Materials, EarlyView.Focused ion beam (FIB) milling is a common tool for nanoscale material processing, however irradiation damage, redeposition, and contamination can occur. We use several characterization tools to show FIB‐induced effects beyond 1 mm from the milled area.
Thomas W. Pfeifer +3 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.Powder metal processing provides scalable advantages in nanoporous (np) metal development. Mechanical alloying is used to produce unique precursors for hybrid nanopore formation by oxide reduction and dealloying. As demonstrated in np Ag, this approach improves process efficiency while promoting smaller ligaments and larger pores, both of which are ...
Mark A. Atwater, Oliver A. Fowler
wiley +1 more source
Beam-Doppler Unitary ESPRIT for Multitarget DOA Estimation
International Journal of Antennas and Propagation, 2018 High-resolution direction of arrival (DOA) estimation is a critical issue for mainbeam multitarget tracking in ground-based or airborne early warning radar system. A beam-Doppler unitary ESPRIT (BD-UESPRIT) algorithm is proposed to deal with this problem.
Cai Wen +4 more
doaj +1 more source
Domain Wall Orientations in Ferroelectric Superlattices Probed with Synchrotron X-Ray Diffraction
, 2018 Ferroelectric domains in PbTiO$_3$/SrTiO$_3$ superlattices were studied using synchrotron X-ray diffraction. Macroscopic measurements revealed a change in the domain wall orientation from $\left\lbrace 100 \right\rbrace $ to $\left\lbrace 110 \right ...
Fernandez-Peña, Stéphanie +4 more
core +1 more source
Creating vortons and three-dimensional skyrmions from domain wall annihilation with stretched vortices in Bose-Einstein condensates [PDF]
, 2012 We propose a mechanism to create a vorton or three-dimensional skyrmion in phase-separated two-component BECs with the order parameters Psi_1 and Psi_2 of the two condensates.
Kasamatsu, Kenichi +3 more
core +2 more sources
Beam waist measurement for terahertz time-domain spectroscopy experiments [PDF]
Optics Letters, 2010 Classical masking aperture methods are found to be mostly inaccurate to determine the terahertz beam size in terahertz time-domain spectroscopy (TDS) experiments, owing to complex diffraction effects. Here, we present a simple and reliable method for measuring beam waists in terahertz TDS.
Podzorov, Alexander +2 more
openaire +3 more sources
Advanced Engineering Materials, EarlyView.This study explores the lightweight potential of laser additive‐manufactured NiTi triply periodic minimal surface sheet lattices. It systematically investigates the effects of relative density and unit cell size on surface quality, deformation recovery, compression behavior, and energy absorption.
Haoming Mo +3 more
wiley +1 more source