Results 81 to 90 of about 41,061 (356)

Direct Metal Laser Fabrication of Cu Slabs from Powder Precursor: Surface Depth of Melt and Furnace Temperature Issues [PDF]

, 2006
A DMLF processing unit based on a raster-scanned 80 W CO2 laser beam has been developed to process single layers of metallic powder precursor. The process chamber provides atmosphere control (high vacuum and inert gas refill) besides temperature ...
Larraín, Tomás, Ramos-Grez, Jorge, Ramírez, Andrés, Sanz-Guerrero, Jorge   +3 more
core   +1 more source

Complex Cryptographic and User‐Centric Physically Unclonable Functions Enabled by Strain‐Sensitive Nanocrystals via Selective Ligand Exchange

Advanced Functional Materials, EarlyView.
This study investigates electromechanical PUFs that improve on traditional electric PUFs. The electron transport materials are coated randomly through selective ligand exchange. It produces multiple keys and a key with motion dependent on percolation and strain, and approaches almost ideal inter‐ and intra‐hamming distances.
Seungshin Lim, Hanseok Seo, Taesung Park, Byung Ku Jung, Junhyeok Park, Young Kyun Choi, Dae Yang Oh, Soong Ju Oh   +7 more
wiley   +1 more source

Study of the impact of treatment modes on hardness, deformability and microstructure of VT6 (Ti-6Al-4V) and VV751P (Ni-15Co-10Cr) alloy samples after selective laser sintering

MATEC Web of Conferences, 2017
Selective laser sintering is an advanced method for obtaining sophisticated products and assembly permanent joints. This is particularly relevant for heat resistant alloys employed in aviation equipment.
Galkina Natalia V., Nosova Ekaterina A., Balaykin Andrey V.   +2 more
doaj   +1 more source

Exploiting Two‐Photon Lithography, Deposition, and Processing to Realize Complex 3D Magnetic Nanostructures

Advanced Functional Materials, EarlyView.
Two‐photon lithography (TPL) enables 3D magnetic nanostructures with unmatched freedom in geometry and material choice. Advances in voxel control, deposition, and functionalization open pathways to artificial spin ices, racetracks, microrobots, and a number of additional technological applications.
Joseph Askey, Arjen van den Berg, Sandra Ruiz Gomez, Claire Donnelly, Dirk Grundler, Sam Ladak   +5 more
wiley   +1 more source

Rapid precision casting for complex thin-walled aluminum alloy parts [PDF]

China Foundry, 2004
Based on Vacuum Differential Pressure Casting (VDPC) precision forming technology and the Selective Laser Sintering (SLS) Rapid Prototyping (RP) technology, a rapid manufacturing method called Rapid Precision Casting (RPC) process from computer three ...
Xuanpu DONG, Naiyu HUANG, Zitian FAN
doaj  

Preparation of near-spherical PA12 particles for selective laser sintering via Plateau-Rayleigh instability of molten fibers

Materials & Design, 2020
We report a novel method to prepare near-spherical polyamide 12 (PA12) particles with controllable size for selective laser sintering (SLS) technology based on the Plateau-Rayleigh instability of molten PA12 fibers.
Ying Zhou, Shuting Xi, Yajiang Huang, Miqiu Kong, Qi Yang, Guangxian Li   +5 more
doaj   +1 more source

Grain Boundary Space Charge Engineering of Solid Oxide Electrolytes: Model Thin Film Study

Advanced Functional Materials, EarlyView.
This study demonstrates unprecedented control of grain boundary electrical properties in solid electrolytes. Selective diffusion of cations through grain boundaries in thin films enables 12 orders of magnitude variation in ionic resistance, proving that systematic chemical modification of grain boundary electrical properties is feasible.
Thomas Defferriere, Yong Beom Kim, Colin Gilgenbach, James M. LeBeau, WooChul Jung, Harry L. Tuller   +5 more
wiley   +1 more source

Growth of Millimeter‐Sized BaTaO2N Single Crystals by an NH3‐Assisted BaCl2 Flux Method

Advanced Functional Materials, EarlyView.
Millimeter‐sized BaTaO2N single crystals are successfully grown from a BaCl2 flux under NH3 flow. Their comprehensive characterization, including dielectric properties, is demonstrated, and the possible growth mechanisms are discussed. Abstract Perovskite‐type oxynitrides have attracted considerable attention due to their excellent photocatalytic ...
Ginji Harada, Mirabbos Hojamberdiev, Hajime Wagata   +2 more
wiley   +1 more source

Optimization of Powder Layer Density in Selective Laser Sintering [PDF]

, 1999
An important parameter for the overall quality of SLS parts is the density of powder layers before sintering. Previous studies have shownthatthe control of powder particle shape and size distribution can increase the density of non-packed powder beds ...
Egger, G., Glardon, R,, Gygax, P.E., Karapatis, N.P.   +3 more
core   +1 more source

Electrochemical Formation of BiVO4/BiPO4 Photoanodes for Enhanced Selectivity toward H2O2 Generation

Advanced Functional Materials, EarlyView.
In acidic KPi, V dissolves from the BiVO4 lattice, while adsorbed phosphate reacts with the electrode under an external bias, forming a BiPO4 surface layer. This BiPO4 layer exhibits stronger bicarbonate adsorption, redirecting the water oxidation pathway toward two‐electron H2O2 production.
Kaijian Zhu, Xinyi Zhang, Lan Wen, Hongjiang Chen, Yudhistira Tirtayasri Amrillah, Vivi Fauzia, Hongzhen Dong, Shaoqiang Su, Wenjun Luo, Ferry Anggoro Ardy Nugroho, Patrick H.‐L. Sit, Yun Hau Ng, Fatwa F. Abdi   +12 more
wiley   +1 more source