Results 51 to 60 of about 170,298 (228)

Chiral Morphing of Liquid Crystal Polymer Networks

open access: yesAdvanced Science, EarlyView.
This paper reviews how macroscopic chirality spontaneously arises from liquid crystal polymer materials. It describes how alignment is utilized to create the mechanical anisotropy, geometric misorientation and asymmetry that leads to chiral shape morphing, how shape selection between helicoids and helices arises, the techniques used to prepare these ...
Laurens T. de Haan
wiley   +1 more source

Copper Welding with High‐Brightness Fiber Lasers [PDF]

open access: yesLaser Technik Journal, 2017
AbstractThe consumer electronics and automotive industry are the driving forces for an increased use of copper in industrial processes and products. With the development of new battery technologies and higher battery capacities, the demands to the joining technologies are increasing.
Michael Grupp, Nils Reinermann
openaire   +1 more source

Fiber laser welding of AA 5754 in the double lap-joint configuration: process development, mechanical characterization, and monitoring

open access: yesThe International Journal of Advanced Manufacturing Technology, 2020
Aluminum alloys are widely spread in many industrial sectors due to their desirable characteristics as low density, good formability, high specific strength, and good resistance to corrosion.
M. Garavaglia   +4 more
semanticscholar   +1 more source

Flexible Direct‐Conversion X‐Ray Detectors: From Emerging Materials to Conformal Imaging

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This comprehensive review analyzed the performance, challenges, and future directions of four emerging material systems for next‐generation flexible direct‐conversion X‐ray detectors: organic semiconductors, perovskites, metal–organic frameworks, and inorganic metal compounds.
Haipeng Di   +11 more
wiley   +1 more source

Laser welding properties of 1800 MPa press hardening steel and low-alloy high-strength steel CR340LA

open access: yes工程科学学报, 2020
A laser tailor welding experiment of 1800 MPa press hardening steel and low-alloy high-strength steel CR340LA was carried out using an optical fiber laser.
Wen LIANG   +5 more
doaj   +1 more source

Laser‐Textured Field‐Engineered Interface for Robust Dry‐Processed Cathodes in Lithium‐Ion Batteries

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Laser‐patterned dry electrodes applied to current collectors could serve as a promising alternative to the limitations of conventional dry electrodes. Laser technology provides a fast and simple method to enhance the surface roughness of current collectors, improving the adhesion at the electrode–current collector interface.
Chaerin Jung   +8 more
wiley   +1 more source

Employment of fiber laser technology to weld austenitic stainless steel 304 l with aluminum alloy 5083 using pre-placed activating flux

open access: yesMaterials & Design, 2015
The overlapping welding was carried out in keyhole mode between austenitic stainless steel 304 l and aluminum alloy 5083 using a low power fiber laser in continuous irradiation.
M.A. Ezazi   +4 more
doaj   +1 more source

Flexibilizing inorganic thermoelectrics

open access: yesFlexMat, EarlyView.
This perspective reviews advances in flexible inorganic thermoelectric materials, covering ductile bulks, thin films, and fibers/yarns. It highlights strategies like warm metalworking, van der Waals material screening, orientation and sandwich engineering, and device integration, offering pathways to combine flexibility and performance for wearable ...
Xiao‐Lei Shi   +3 more
wiley   +1 more source

A Fully‐Connected Chip‐Integrated Reconfigurable Mode‐Pairing Quantum Key Distribution Network

open access: yesLaser &Photonics Reviews, EarlyView.
This work constructs a fully connected reconfigurable chip‐integrated quantum key distribution network via the mode‐pairing protocol. Hybrid ECL and WSS chips cut wavelength and port overhead, realizing arbitrary‐user key sharing with merely two wavelengths.
Xiao‐Lei Jiang   +14 more
wiley   +1 more source

Cold Gas Sprayed Titanium Coating for Corrosion Protection of Bipolar Plates in Proton Exchange Membrane Water Electrolysis

open access: yesMaterials and Corrosion, EarlyView.
Climate‐neutral green hydrogen is produced via water electrolysis using renewable energy. This study explores using cold gas spraying to apply titanium coatings on steel bipolar plates for proton exchange membrane water electrolyzers. The coating shows effective corrosion protection, presenting a promising solution for future designs.
Kirsten Bobzin   +3 more
wiley   +1 more source

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