Results 21 to 30 of about 1,224,469 (239)

Correlation analysis among multiple images of plasma induced during fiber laser–arc hybrid welding

AIP Advances, 2020
In this study, the multiple imaging morphological features of plasma have been observed by using the multiple-imaging technique during the fiber laser–tungsten insert gas (TIG) arc hybrid welding.
Jianglin Zou, Lida Wang, Rongshi Xiao
doaj   +1 more source

Correlation between the spatters and evaporation vapor on the front keyhole wall during fiber laser keyhole welding

Journal of Materials Research and Technology, 2020
Severe spattering is one of the common problems during fiber laser keyhole welding. In this study, the correlation between the spatter formation and laser-induced evaporation vapor on the front keyhole wall (FKW) was studied by changing the welding speed
Gaolei Zhang, Baoqi Zhu, Jianglin Zou, Qiang Wu, Rongshi Xiao   +4 more
doaj   +1 more source

Mid-infrared volume phase gratings manufactured using ultrafast laser inscription [PDF]

, 2013
We report on the ultrafast laser inscription (ULI) of volume phase gratings inside gallium lanthanum sulphide (GLS) chalcogenide glass substrates. The effect of laser pulse energy and grating thickness on the dispersive properties of the gratings is ...
Thomson, Robert R, Lee, David, MacLachlan, David Guillaume, Cunningham, Colin R   +3 more
core   +1 more source

High-power sub-picosecond filamentation at 1.03 µm with high repetition rates between 10 and 100 kHz

APL Photonics, 2023
Filamentation has extensively been explored and is well understood at repetition rates
Robin Löscher, Victor Moreno, Dionysis Adamou, Denizhan K. Kesim, Malte C. Schroeder, Matteo Clerici, Jean-Pierre Wolf, Clara J. Saraceno   +7 more
doaj   +1 more source

Molecular polarizability anisotropy of liquid water revealed by terahertz-induced transient orientation

Nature Communications, 2018
The intermolecular dynamics of liquid water impact most biological processes. Here, the authors use intense terahertz electromagnetic pulses to generate a transient, out-of-equilibrium state of the water network to show that the molecules become oriented
Peter Zalden, Liwei Song, Xiaojun Wu, Haoyu Huang, Frederike Ahr, Oliver D. Mücke, Joscha Reichert, Michael Thorwart, Pankaj Kr. Mishra, Ralph Welsch, Robin Santra, Franz X. Kärtner, Christian Bressler   +12 more
doaj   +1 more source

Recent advances in ultrafast laser micromachining of transparent materials

, 2009
Modification of transparent materials with ultrafast lasers has attracted considerable interest due to a wide range of applications including laser surgery, integrated optics, optical data storage, 3D micro- and nanostructuring [1]. Three different types
Kazansky, P.G., Hirao, K., Miura, K., Yang, W., Sakakura, M., Svirko, Y.P., Corbari, C., Shimotsuma, Y., Beresna, Martynas, Qiu, J.   +9 more
core   +2 more sources

Generation of 12 nJ Pulse Energy by a Thulium-doped Fiber Mamyshev Oscillator [PDF]

EPJ Web of Conferences, 2022
Schuhbauer B., Adolfs V., Haxsen F., Wienke A., Morgner U., Neumann J., Kracht D.   +6 more
doaj   +1 more source

Laser pressure welding of Al-Li alloy 2198: effect of welding parameters on fusion zone characteristics associated with mechanical properties

High Temperature Materials and Processes, 2020
Al-Li alloy 2198 exhibits good combination of toughness and strength but its application is strongly limited by the poor weldability due to the formation of porosities during fusion-welding.
Zhao Tianbo, Sato Yutaka S., Xiao Rongshi, Huang Ting, Zhang Jingquan   +4 more
doaj   +1 more source

FastNano Liquid: An Automated Platform for Small‐Angle X‐ray Scattering‐Based Materials Discovery

Advanced Engineering Materials, EarlyView.
We present FastNano Liquid, an automated small‐ and wide‐angle X‐ray scattering platform for the combined synthesis and characterization of (nano)materials. The platform is coupled to varied reactor workflows for both in situ studies of reaction kinetics and ex situ screening of synthesis conditions to support machine learning‐guided exploration ...
Pierre‐Baptiste Flandrin, Émeline Cournède, Jens Krarup, Michael Lesa, Foyzul Hasan, Amandine Séné, Arnaud Lahouati, David Benhaiem, Jérémie‐Luc Sanchez, Simon Delacroix, Thierry Gacoin, Fabienne Testard, Damien Faivre, David Carriere, Corinne Chevallard, Olivier Taché, Mark A. Levenstein   +16 more
wiley   +1 more source

Molecular dynamics studies of ultrafast laser-induced phase and structural change in crystalline silicon [PDF]

, 2012
In this work, thermodynamic phenomena in crystalline silicon irradiated by an ultrafast laser pulse were studied using the method of molecular dynamics simulations. The Stillinger-Weber potential was used to model the crystalline silicon. The temperature
Yang, Chengjuan, Xu, Xianfan, Wang, Yaguo   +2 more
core   +1 more source