Results 61 to 70 of about 4,177,848 (171)

Atomic disorder and thermal stability in laser beam-shape-tailored 3D-Printed Zr-based bulk metallic glass under in-situ heating during high-energy X-ray diffraction

Materials Today Advances
This study demonstrates that tailoring the laser beam intensity profile in laser powder-bed fusion (LPBF) significantly influences the thermal and mechanical behavior of Zr-based bulk metallic glasses (BMGs).
Sepide Hadibeik, Hossein Ghasemi-Tabasi, Lukas Schretter, Emanuel Gingl, Miguel B. Costa, Andreas Burn, Christoph Gammer, A. Lindsay Greer, Florian Spieckermann, Jürgen Eckert   +9 more
doaj   +1 more source

Thermal Atoms Facilitate Intensity Clipping Between Vectorial Dual‐Beam Generated by a Single Metasurface Chip

Advanced Science
Manipulating vector beams is pivotal in fields such as particle manipulation, image processing, and quantum communication. Flexibly adjusting the intensity distribution of these beams is crucial for effectively realizing these applications.
Chen Qing, Jialong Cui, Lishuang Feng, Dengke Zhang   +3 more
doaj   +1 more source

Structured beam generation and optical trapping of low-index particles using a semi-nonlinear Michelson interferometer

Frontiers in Physics
In this work, we propose a semi-nonlinear Michelson interferometer (SNMI) for controllable laser beam shaping and optical manipulation. By placing a Kerr-type nonlinear medium into one arm of the interferometer, the phase difference between the two arms ...
Mai Nguyet Cong, Bui Xuan Kien
doaj   +1 more source

Astigmatism-controlled beam shaping for high-quality fibre Bragg grating inscription using femtosecond laser [PDF]

We present an astigmatism-controlled beam-shaping technique for femtosecond laser inscription of FBGs, optimizing beam profiles using a cylindrical lens to mitigate focal distortion and enhance grating quality.
Zhou, Kaiming, Ma, Yuehui, Kamarudin, Lukman, Li, Jiaxuan, Sun, Bing   +4 more
core   +1 more source

Study on the Evolutionary Characteristics of Airyprime Beams in Gaussian-Type PT Symmetric Optical Lattices

Photonics
The Airyprime beam, due to its adjustable focusing ability and controllable orbital angular momentum, has attracted significant attention in fields such as free-space optical communication and particle trapping.
Depeng Chen, Dongchu Jiang, Zhewen Xiao
doaj   +1 more source

Some energy conservative schemes for vibro-impacts of a beam on rigid obstacles [PDF]

, 2011
Caused by the problem of unilateral contact during vibrations of satellite solar arrays, the aim of this paper is to better understand such a phenomenon.
Salaün, Michel, Pozzolini, Cédric, Salaun, M., C. Pozzolini, M. Salaun, Pozzolini, C.   +5 more
core   +1 more source

Impact of Beam Shape and Frequency on Weld Seam Geometry and Penetration Depth Using a Coherent Beam Combining Laser

Applied Sciences
The geometry and quality of a weld seam are critical factors in laser beam welding, influencing mechanical performance and structural integrity. Dynamically modulated laser beams provide a precise means of tailoring energy input in high-power laser ...
Karthik Ravi Krishna Murthy, Reza Sanei, Abhay Sharma, Simon Olschok, Uwe Reisgen   +4 more
doaj   +1 more source

Next-generation aircraft structures enabled by tailored friction stir welding and laser welding

Journal of Advanced Joining Processes
Structural components of aircraft fuselages, such as frames and stringers, are predominantly manufactured from milled high-strength aluminum profiles.
Markus Wagner, Andreas Grimm, Rishabh Rajesh Rao, Axel Jahn, Dirk Dittrich, Philipp Mohlau, Andreas Wetzig, Kai Fortkamp   +7 more
doaj   +1 more source

A Multiscale and Multiphysics Framework for Laser Beam Welding with Dynamic Beam Shaping

Recent advances in dynamic beam shaping offer transformative potential for laser welding yet understanding of the process’s spatial and temporal response remains limited. This study employs a multi-kW continuous-wave laser with a coherent beam combiner and optical phased array to modulate fluence distribution at microsecond scales.
Bakhtari, Reshad, Jabbar, Sharhid, Kotadia, Hiren R., Franciosa, Pasquale   +3 more
openaire   +2 more sources

Dynamic analysis of magnetorheological elastomer configured sandwich structures

, 2009
The work presented in this thesis is concerned with the investigation of the dynamic behaviour of magnetorheological elastomers (MREs) and smart sandwich structures.
Choi, Won Jun
core   +1 more source