Results 111 to 120 of about 321,934 (301)

Weld formation and porosity in TC4 joint by oscillating laser beam welding with circle trajectory model

Journal of Materials Research and Technology
The pores problem is a challenging problem in laser beam welding titanium alloy TC4. Oscillating laser beam welding, as a new welding process, can effectively control the behavior of the molten pool, and is beneficial to the escape of pores, which holds ...
Tianqing Li, Yongjie Wan, Zhiwei Bi, Siyu Yang, Daoliang Wu, Yucheng Lei   +5 more
doaj   +1 more source

Impact of Pre‐Oxidation Treatments on a Recycled MgO/Steel‐Composite as Carbon Free Anode in Aluminum‐Electrolysis Environments

Advanced Engineering Materials, EarlyView.
Cermets (60 vol.% AISI 316L stainless steel, 40 vol.% recycled MgO), intended for use in aluminum electrolysis, were pre‐oxidized in three furnaces with different heating technologies and subjected to a cryolite corrosion test. The different atmospheres influenced the formation of oxide layers, which in turn affected corrosion resistance and ...
Patricia Kaiser, Felix Drechsler, Nora Brachhold, Florian Kerber, Christos G. Aneziris   +4 more
wiley   +1 more source

Affecting the Properties of Copper–Graphene Electroconductive Composite by Severe Plastic Deformation

Advanced Engineering Materials, EarlyView.
Copper‐based composites enhanced with carbon feature convenient mechanical properties and favorable electric conductivity. Processing via deformation and thermomechanical treatments can introduce advantageous microstructures further enhancing their performance. Herein, copper–graphene powder‐based composites are directly consolidated via rotary swaging
Radim Kocich, Lenka Kunčická, Pavel Czernek, Zifan Wang   +3 more
wiley   +1 more source

High-quality stable electron beams from laser wakefield acceleration in high density plasma

Physical Review Special Topics. Accelerators and Beams, 2014
High-quality, stable electron beams are produced from self-injected laser wakefield acceleration using the interaction of moderate 3 TW, 45 fs duration Ti:sapphire laser pulses with high density (>5×10^{19}   cm^{−3}) helium gas jet plasma.
B. S. Rao, A. Moorti, R. Rathore, J. A. Chakera, P. A. Naik, P. D. Gupta   +5 more
doaj   +1 more source

Reflection High-Energy Electron Diffraction oscillations during epitaxial growth of artificially layered films of (BaCuOx)m /(CaCuO2)n

, 2000
Pulsed Laser Deposition in molecular-beam epitaxy environment (Laser-MBE) has been used to grow high quality BaCuOx/CaCuO2 superlattices. In situ Reflection High Energy Electron Diffraction (RHEED) shows that the growth mechanism is 2-dimensional ...
Balestrino, G., Lavanga, S., Martellucci, S., Medaglia, P. G., Paoletti, A., Pasquini, G., Petrocelli, G., Tebano, A., Tucciarone, A.   +8 more
core   +1 more source

Intermolecular Interactions as Driving Force of Increasing Multiphoton Absorption in a Perylene Diimide‐Based Coordination Polymer

Advanced Functional Materials, EarlyView.
This study uncovers the unexplored role of intermolecular interactions in multiphoton absorption in coordination polymers. By analyzing [Zn2tpda(DMA)2(DMF)0.3], it shows how the electronic coupling of the chromophores and confinement in the MOF enhance two‐and three‐photon absorption.
Simon Nicolas Deger, Anna Mauri, Yang Cui, Sebastian Josef Weishäupl, Ali Deniz Özdemir, Hamad Syed, Aleksandr Ovsianikov, Wolfgang Wenzel, Alexander Pöthig, Jürgen Hauer, Mariana Kozlowska, Roland Augustinus Fischer   +11 more
wiley   +1 more source

High-Power Laser Coherent Beam Combination Through Self-Imaging in Plasma Waveguides

Applied Sciences
A novel approach for laser coherent beam combination (CBC) utilizing the self-imaging effect in plasma waveguides is presented in this study, which enables the transmission of ultrashort laser pulses at intensities above the bulk damage threshold of ...
Yixuan Huang, Haitao Zhang, Zhuoyi Yang, Yanwei Wang, Yihang Huang, Xiaozheng Liu, Junyu Chen   +6 more
doaj   +1 more source

3D (Bio) Printing Combined Fiber Fabrication Methods for Tissue Engineering Applications: Possibilities and Limitations

Advanced Functional Materials, EarlyView.
Biofabrication aims at providing innovative technologies and tools for the fabrication of tissue‐like constructs for tissue engineering and regenerative medicine applications. By integrating multiple biofabrication technologies, such as 3D (bio) printing with fiber fabrication methods, it would be more realistic to reconstruct native tissue's ...
Waseem Kitana, Indra Apsite, Leonid Ionov   +2 more
wiley   +1 more source

Laser heater commissioning at an externally seeded free-electron laser

Physical Review Special Topics. Accelerators and Beams, 2014
FERMI is the first user facility based upon an externally seeded free-electron laser (FEL) and was designed to deliver high quality, transversely and longitudinally coherent radiation pulses in the extreme ultraviolet and soft x-ray spectral regimes. The
S. Spampinati, E. Allaria, L. Badano, S. Bassanese, S. Biedron, D. Castronovo, P. Craievich, M. B. Danailov, A. Demidovich, G. De Ninno, S. Di Mitri, B. Diviacco, M. Dal Forno, E. Ferrari, W. M. Fawley, L. Fröhlich, G. Gaio, L. Giannessi, G. Penco, C. Serpico, C. Spezzani, M. Trovò, M. Veronese, S. V. Milton, M. Svandrlik   +24 more
doaj   +1 more source

Beam spot of Q-switched ND: YAG laser based on raster graphic [PDF]

, 2010
The quality of beam produced by a Q-switched Nd:YAG laser was investigated. A photographic technique associated with image processing system was utilized to determine the beam quality.
Bidin, Noriah, Mat Daud, Yaacob, Tamuri, Abd. Rahman   +2 more
core