Results 21 to 30 of about 164,990 (313)

Finite element analysis of laser shock peening of 2050-T8 aluminum alloy [PDF]

, 2014
Laser shock processing is a recently developed surface treatment designed to improve the mechanical properties and fatigue performance of materials, by inducing a deep compressive residual stress field.
SONG, Hongbin, JI, Vincent, Popa, Iona, PEYRE, Patrice, HFAIEDH, Neila, POPA, Ioana, VIGNAL, Vincent   +6 more
core   +1 more source

Laser surface patterning to enhance adhesion of plasma sprayed coatings [PDF]

, 2015
In thermal spraying, adhesive bond strength is a feature of surface properties. An adapted surface is studied with prior-surface treatments to enhance interface energy.
BOUSTIE, Michel, COURAPIED, Damien, BERTHE, Laurent, COSTIL, S, Boustie, M., BOUSTIE, M, Cormier, J., CORMIER, Jonathan, Costil, S., KROMER, Robin, PEYRE, Patrice, Kromer, R., COSTIL, Sophie, KROMER, R, CORMIER, J, COURAPIED, D   +15 more
core   +1 more source

Controlled biopolymer roughness induced by plasma and excimer laser treatment

eXPRESS Polymer Letters, 2013
A new method for biopolymer poly-L-lactic-acid (PLLA) surface nanostructuring with surface plasmon resonance appearance is proposed. The motivation of this work is to determine optimal conditions for rough or flat biopolymer surface which may find broad ...
P. Slepicka, I. Michaljanicova, V. Svorcik   +2 more
doaj   +1 more source

Excitation of surface plasma waves and fast electron generation in relativistic laser–plasma interaction [PDF]

Scientific Reports, 2020
AbstractThe excitation of surface plasma waves (SPW) by an intense short laser pulse is a useful tool to enhance the laser absorption and the electron heating in the target. In this work, the influence of the transverse laser profile and the pulse duration used to excited SPW is investigated from Fluid and 2D Particle-in-Cell simulations.
Raynaud, Michèle, Héron, Anne, Adam, Jean-Claude   +2 more
openaire   +4 more sources

Structure-Mediated Excitation of Air Plasma and Silicon Plasma Expansion in Femtosecond Laser Pulses Ablation

Research, 2018
Femtosecond laser-induced surface structures upon multiple pulses irradiation are strongly correlated with the pulse number, which in turn significantly affects successive laser-material interactions.
Qingsong Wang, Lan Jiang, Jingya Sun, Changji Pan, Weina Han, Guoyan Wang, Feifei Wang, Kaihu Zhang, Ming Li, Yongfeng Lu   +9 more
doaj   +1 more source

Impacts of Ambient and Ablation Plasmas on Short- and Ultrashort-Pulse Laser Processing of Surfaces

Micromachines, 2014
In spite of the fact that more than five decades have passed since the invention of laser, some topics of laser-matter interaction still remain incompletely studied. One of such topics is plasma impact on the overall phenomenon of the interaction and its
Nadezhda M. Bulgakova, Alexei N. Panchenko, Vladimir P. Zhukov, Sergey I. Kudryashov, Antonio Pereira, Wladimir Marine, Tomas Mocek, Alexander V. Bulgakov   +7 more
doaj   +1 more source

Impact of the Polishing Suspension Concentration on Laser Damage of Classically Manufactured and Plasma Post-Processed Zinc Crown Glass Surfaces

Applied Sciences, 2018
The laser-induced damage threshold of optics is an issue of essential importance in high-power laser applications. However, the complex and partially interacting mechanisms as well as the underlying reasons for laser damage of glass surfaces are not yet ...
Christoph Gerhard, Marco Stappenbeck
doaj   +1 more source

A Study of the Characteristics of Plasma Generated by Infrared Pulse Laser-Induced Fused Silica

Crystals, 2021
When high energy infrared laser pulses are incident on fused silica, the surface of the fused silica is damaged and a laser-induced plasma is produced.
Lixue Wang, Xudong Sun, Congrui Geng, Zequn Zhang, Jixing Cai   +4 more
doaj   +1 more source

Surface modification of HVOF thermal sprayed WC–CoCr coatings by laser treatment [PDF]

, 2010
In this work the affects of laser characteristics on microstructure and microhardness of high velocity oxygen fuel sprayed (HVOF) WC–CoCr coatings were investigated.
A. Forn, Chikarakara, Evans, E. Chikarakara, M. Punset, Brabazon, Dermot, Picas, J.A., Aqida, S., Brabazon, D., S. Naher, Forn Alonso, Antonio, Naher, Sumsun, Punset Fuste, Miquel, D. Brabazon, S. Aqida, Punset, M., Forn, A., Chikarakara, E., Naher, S., Aqida, S.N., Picas Barrachina, Josep Anton, J. A. Picas   +20 more
core   +1 more source

Sequential Atmospheric Pressure Plasma-Assisted Laser Ablation of Photovoltaic Cover Glass for Improved Contour Accuracy

Micromachines, 2014
In this paper, we present sequential atmospheric pressure plasma-assisted laser ablation of photovoltaic cover glass. First, glass samples were plasma pre-treated using a hydrogenous plasma process gas in order to accomplish a modification of the near ...
Christoph Gerhard, Maximilian Dammann, Stephan Wieneke, Wolfgang Viöl   +3 more
doaj   +1 more source