Results 91 to 100 of about 775,307 (358)

Finite Element Modeling of Residual Stress Formation during Nanosecond Laser Ablation of Stainless Steel

Advanced Engineering Materials, EarlyView.
This article investigates residual stress formation during single‐spot nanosecond laser ablation of stainless steel. Experimental validation and a parametric study using finite element simulations are employed to analyze thermal effects, ablation dynamics, and stress evolution.
Yutaka Tsumura, Anna Paradowska, Andrei V. Rode, Steve Madden, Ludovic Rapp, Meera Mohan, Alison Wain, Gwénaëlle Proust   +7 more
wiley   +1 more source

A 3D printed low‐profile wideband circularly polarised elliptical integrated lens antenna

IET Microwaves, Antennas & Propagation
The authors presents a low‐profile wideband circularly polarised (CP) millimetre‐wave (mmWave) elliptical integrated lens antenna (ILA) fabricated by dielectric 3D printing technology.
Bin Xu, Bing Zhang, Xiao An
doaj   +1 more source

Quartz isolatings in the shales and amphibolites of the East-Ufalei zone as a source for the production of high-purity quartz raw materials (Southern Urals)

Литосфера, 2019
Research subject. In this research, we studied lenses, nodules and interlayers of granulated quartz, which are located in amphibolites and shales in the eastern part of the Ufalei gneso-amphibolite complex.Materials and methods.
M. A. Igumentseva, L. Y. Kabanova, V. N. Anfilogov, M. V. Shtenberg, I. A. Blinov, V. M. Ryzhkov   +5 more
doaj   +1 more source

Terahertz-based system for dehydration analysis of hydrogel contact lenses [PDF]

, 2019
The use of terahertz-based techniques has grown very fast since they are capable of performingevaluations at molecular level, being very suitable for the analysis of biological samples and bioma-terials such as those for contact lenses.
Burgos Fernández, Francisco Javier, Guaus Guerrero, Ester, Martínez, Cristina, Vilaseca Ricart, Meritxell   +3 more
core   +2 more sources

Optimized Strategy for Fabricating High‐Aspect‐Ratio Periodic Structures Over Large Areas Using ps‐Direct Laser Interference Patterning

Advanced Engineering Materials, EarlyView.
Picosecond direct laser interference patterning (DLIP) enables precise microstructure fabrication on stainless steel. Using a multiscan approach, high‐aspect‐ratio patterns are achieved. Fluence influences structure growth and homogeneity, with smaller periods yielding better uniformity.
Fabian Ränke, Marcelo Sallese, Marcos Soldera, Ignacio Tabares, Flavio Soldera, Andrés Fabián Lasagni   +5 more
wiley   +1 more source

Multi-wavelength focusing based on nanoholes

New Journal of Physics, 2020
A kind of controllable multi-wavelength focusing metalenses is proposed. The proposed metalenses consist of identical nanometer holes etched in silver film and the beam focusing at three primary wavelengths is controlled without additional phase ...
Yuansheng Han, Xiaoqing Lu, Haoran Lv, Zhen Mou, Changda Zhou, Shuyun Wang, Shuyun Teng   +6 more
doaj   +1 more source

Survey of Gravitationally-lensed Objects in HSC Imaging (SuGOHI). I. Automatic search for galaxy-scale strong lenses

, 2017
The Hyper Suprime-Cam Subaru Strategic Program (HSC SSP) is an excellent survey for the search for strong lenses, thanks to its area, image quality and depth.
Bolton, Adam S., Chan, James H. H., Coupon, Jean, Jaelani, Anton T., Komiyama, Yutaka, Lee, Chien-Hsiu, Miyazaki, Satoshi, More, Anupreeta, Oguri, Masamune, Shu, Yiping, Sonnenfeld, Alessandro, Suyu, Sherry H., Tanaka, Masayuki, Wong, Kenneth C., Yonehara, Atsunori   +14 more
core   +1 more source

Multiple imaging by gravitational waves [PDF]

, 1997
Gravitational waves act like lenses for the light propagating through them. This phenomenon is described using the vector formalism employed for ordinary gravitational lenses, which was proved to be applicable also to a non-stationary spacetime, with the
Braginsky V. B., Carr B. J., Fakir R., Faraoni V., Frieman J. A., Labeyrie A., Linder E. V., Udalski A., VALERIO FARAONI, Winterberg F.   +9 more
core   +3 more sources

Toughness of Confined Auxetic Foams

Advanced Engineering Materials, EarlyView.
Auxetic (negative Poisson's ratio) materials offer benefits such as impact mitigation, thermal insulation, vibration damping, and reduced shear strain, although their fracture mechanics are largely unexplored. This study investigates damage initiation and propagation in confined re‐entrant auxetic foams from polyurethane via experimental ...
Adrianos E. F. Athanasiadis, Oliver Duncan, Michal K. Budzik, Marcelo A. Dias   +3 more
wiley   +1 more source

A millimeter-wave antireflection coating for cryogenic silicon lenses [PDF]

, 2007
We have developed and tested an antireflection (AR) coating method for silicon lenses at cryogenic temperatures and millimeter wavelengths. Our particular application is a measurement of the cosmic microwave background.
Fowler, J. W., Halpern, M., Henry, R., Lau, J. M., Leong, J., Marriage, T. A., Marsden, D., Marsden, G., Page, L., Wishnow, E., Wollck, E.   +10 more
core   +2 more sources