Results 61 to 70 of about 275,187 (297)

2D longitudinal modeling of heat transfer and fluid flow during multilayered [PDF]

, 2012
version post-print de l'article : JLA Vol : 24 Iss:3. 2D longitudinal modeling of heat transfer and fluid flow during multilayered direct laser metal deposition processDerived from laser cladding, the Direct Laser Metal Deposition (DLMD) process is ...
CARRON, Denis, LE MASSON, Philippe, GHARBI, Myriam, PEYRE, Patrice, FABBRO, Rémy, CARIN, Muriel, MORVILLE, Simon   +6 more
core  

Carboxylic‐Acid Functionalized Multiwalled Carbon Nanotube‐Alkane‐Based Resistive Temperature Sensor for Cold Chain Applications

Advanced Engineering Materials, EarlyView.
This study presents a reversible temperature sensor with high switching ratio, ∼103. The device is fabricated using PET‐ITO and carbon nanotube dispersions in alkane. Considering its application in cold chain logistics, a proof‐of‐concept with LED is showcased. Thus, a temperature drop below the threshold temperature (crystallization temperature of the
Sunil Kumar Behera, Philippe Marrec, A. Jorge Parola, Madalena Dionísio, Hugo Águas, Andreia F. M. Santos, Hamed Pourkheirollah, Donald Lupo, César A. T. Laia   +8 more
wiley   +1 more source

High peak power solid state laser for micromachining of hard materials

, 2022
S.134-142Laser micromachining has become a key enabling technology in the ever-continuing trend of miniaturization in microelectronics, micro-optics, and micromechanics.
Herbst, L., Wiessner, A.O., Govorkov, S.V., Kuntze, T., Quitter, J.P., Heglin, M., Ray, G.M.   +6 more
core  

2.85-kW cryogenic Nd:YAG slab laser operating at 946 nm

Frontiers in Physics, 2023
A several-kilowatt level laser at 946 nm is demonstrated in a cryogenically cooled diode-pumped Nd:YAG slab system. The oscillator realizes the record of the output power of 2.85 kW in a compact cavity with the homemade cryogenically cooled Nd:YAG ...
Jin-Quan Chang, Jin-Quan Chang, Jin-Quan Chang, Qi Bian, Qi Bian, Yong Bo, Yong Bo, Yu Shen, Yu Shen, Qin-Jun Peng, Qin-Jun Peng   +10 more
doaj   +1 more source

Low‐Cost, Large‐Scale Nanoporous Metals by Mechanical Alloying, Oxide Reduction, and Dealloying of Powders

Advanced Engineering Materials, EarlyView.
Powder metal processing provides scalable advantages in nanoporous (np) metal development. Mechanical alloying is used to produce unique precursors for hybrid nanopore formation by oxide reduction and dealloying. As demonstrated in np Ag, this approach improves process efficiency while promoting smaller ligaments and larger pores, both of which are ...
Mark A. Atwater, Oliver A. Fowler
wiley   +1 more source

Direct keyhole laser welding of aluminum alloy AA5754 to titanium alloy Ti6Al4V [PDF]

, 2014
The tensile strength of direct AA5754/Ti6Al4V joints performed by high speed Yb:YAG laser welding is found to be determined by morphology and phase content of dissimilar interface formed between contacting Al-rich and Ti-rich melted zones. Three types of
CICALA, E, Tomashchuk, I, PEYRE, Patrice, Sallamand, P, SALLAMAND, Pierre, TOMASHCHUK, Iryna, GREVEY, D   +6 more
core   +1 more source

Mechanisms driving different QPD cells response signals revealed by a single cell irradiated with a laser

Scientific Reports
The response mechanism of a Four-Quadrant Photodetector (QPD) in an experimental setting was studied by irradiating a single QPD cell with a millisecond-pulsed laser.
Weiwei Chen, Hongxu Liu, De Song
doaj   +1 more source

Investigation on Characteristics of 3–5 μm Mid-Infrared Optical Parametric Amplification in LiInS₂

IEEE Photonics Journal
The optical parametric amplification process in the mid-infrared (MIR) 3–5 μm region of nonlinear crystal LiInS2 (LIS) has been investigated. The LIS crystal was pumped by a 1064 nm laser with a pulse width of 30 picoseconds and seeded by a
Jingjing Zhang, Feng Yang, Yuanzhai Xu, Hongwei Gao, Yong Bo   +4 more
doaj   +1 more source

Slow-Light Effect and Mode Selection of Double Fiber Ring With a Fiber Bragg Grating

IEEE Photonics Journal, 2018
A novel slow-light reflector composed of a double-ring resonator with a uniform fiber Bragg grating (FBG) incorporated is proposed in this paper, which can be used as a mirror of narrow-linewidth fiber laser, based on its enlarged group delay, and as a ...
Xiaoqiong Qin, Zujie Fang, Kang Ying, Zhidan Ding, Di Wang, Fang Wei, Fei Yang, Qing Ye, Ronghui Qu, Haiwen Cai   +9 more
doaj   +1 more source

On the Lightweight Potential of Laser Additive Manufactured NiTi Triply Periodic Minimal Sheet Lattices

Advanced Engineering Materials, EarlyView.
This study explores the lightweight potential of laser additive‐manufactured NiTi triply periodic minimal surface sheet lattices. It systematically investigates the effects of relative density and unit cell size on surface quality, deformation recovery, compression behavior, and energy absorption.
Haoming Mo, Shuo Qu, Shiming Gao, Xu Song   +3 more
wiley   +1 more source