Results 101 to 110 of about 147,145 (300)

Dynamic Testing of Cold Gas Sprayed Bipolar Plates–Porous Transport Layer Coating System in Proton Exchange Membrane Water Electrolysis

Advanced Engineering Materials, EarlyView.
Through direct application of porous transport layer (PTL) on the bipolar plate (BPP) with thermal spraying, the interfacial contact resistance is improved. With the cold gas sprayed BPP–PTL coating system, a proton exchange membrane water electrolysis cell with a cell voltage of Ucell = 1.9 V can be operated up to i = 2.5 A/cm2 in a dynamic mode ...
Kirsten Bobzin, Marvin Erck, Kevin Jasutyn, Katja Radermacher, Andreas Bund, Mario Kurniawan   +5 more
wiley   +1 more source

Narrow linewidth short cavity Brillouin random laser based on Bragg grating array fiber and dynamical population inversion gratings

Results in Physics, 2018
We report on random lasing observed with 100-m-long fiber comprising an array of weak FBGs inscribed in the fiber core and uniformly distributed over the fiber length.
S.M. Popov, O.V. Butov, Y.K. Chamorovski, V.A. Isaev, P. Mégret, D.A. Korobko, I.O. Zolotovskii, A.A. Fotiadi   +7 more
doaj   +1 more source

Dielectric Barrier Discharge Plasma Deoxidation of Natively Oxide Layer of Copper Powders in a Fluidized Bed

Advanced Engineering Materials, EarlyView.
This paper presents a novel approach to reducing oxide layers on metal powders using low‐temperature hydrogen dielectric barrier discharge plasmas at atmospheric pressure. Unlike conventional hydrogen‐plasma reductions, the powders do not contact the plasma directly.
Shukang Zhang, Annett Wollmann, Thomas Gimpel, Alfred P. Weber   +3 more
wiley   +1 more source

Picosecond Yb-doped tapered fiber laser system with 1.26 MW peak power and 200 W average output power

Scientific Reports, 2020
We demonstrate a compact picosecond master-oscillator power-amplifier (MOPA) system based on an Yb-doped polarization-maintaining double-clad tapered fiber (T-DCF) delivering pulses with over 1.26 MW peak power and average output power up to 200 W ...
Andrey Petrov, Maxim Odnoblyudov, Regina Gumenyuk, Lidiya Minyonok, Andrey Chumachenko, Valery Filippov   +5 more
doaj   +1 more source

Multifunctional Crushing and Piezoresistive Self‐Sensing in Conductive Epoxy/CNT‐Coated Polyetherimide TPMS Lattices

Advanced Engineering Materials, EarlyView.
This study reports lightweight polyetherimide triply periodic minimal surfaces lattices coated with carbon nanotube‐reinforced epoxy that combine mechanical robustness with self‐sensing. The conformal coating enhances stiffness, strength and energy absorption while enabling reliable strain monitoring.
A. Triay, J. Schneider, P. Harrison, S. Kumar   +3 more
wiley   +1 more source

Surface Tension Measurement of Ti‐6Al‐4V by Falling Droplet Method in Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
In this article, the temperature‐dependent surface tension of free falling, oscillating Ti‐6Al‐4V droplets is investigated in both argon and monosilane doped, oxygen‐free atmosphere. Droplet temperature and oscillation are captured with one single high‐speed camera, and the surface tension is calculated with Rayleigh's formula.
Johannes May, Finn‐Lennard Janthur, Lena Kreie, Michael Müller, Sarah Seffer, Nick Schwarz, Jörg Hermsdorf, Thomas Hassel, Stefan Kaierle, Ludger Overmeyer   +9 more
wiley   +1 more source

Over 400 W average power, sub-two-cycle, carrier-envelope phase-stable fiber laser system

High Power Laser Science and Engineering
We report on the development of a carrier-envelope phase (CEP)-stable 1030 nm fiber-based laser system producing 6.2 fs pulses achieved via the multi-pass cell (MPC) post-compression technique with 402 W average power at 100 kHz repetition rate.
Imre Seres, Evgeny Shestaev, Maxim Tschernajew, Péter Jójárt, Christian Gaida, Nico Walther, Tamás Bartyik, Barnabás Gilicze, Zsolt Bengery, Dominik Hoff, Marco Kienel, Tino Eidam, Jens Limpert, Ádám Börzsönyi, Katalin Varjú, Zoltán Várallyay   +15 more
doaj   +1 more source

Schlussbericht [PDF]

Ziel des Projekts war die Entwicklung und Anwendung von KI-Techniken zur Verbesserung des optoelektronischen Designs und der Epitaxieprozessmodellierung und -herstellung.
Alt, N., Amin, N., Beattie, M., Bloß, Ch., Bösch, A., Dilger, A., Dörsam, T., Fehrenbacher, E., Freitas, R., Helmers, Henning, Höhn, O., Jamil, S., Koch, R., Lackner, D., Laskowski, T., Müller, R., Nacke, R., Oliva, E., Pellegrino, C., Sahajad, F., Schachtner, M., Schauerte, M., Scheer, M., Schygulla, P., Schön, J., Selis, A., Siefer, G., Simon, P., Stättner, S., Tibbits, T., Wekkeli, A., Wiesenfarth, M.   +31 more
core   +2 more sources

Additive Manufacturing of Continuous Fibre Reinforced Composites: Process, Characterisation, Modelling, and Sustainability

Advanced Engineering Materials, EarlyView.
Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley   +1 more source

Single Trench Fiber-Enabled High-Power Fiber Laser

Photonics
As a novel design of large-mode-area fiber, the single trench fiber (STF) providing high higher-order-mode suppression with a large mode area for the fundamental mode shows potential for high-power and high-brightness applications.
Yi An, Fengchang Li, Huan Yang, Xiao Chen, Liangjin Huang, Zhiping Yan, Min Jiang, Baolai Yang, Peng Wang, Zhiyong Pan, Zongfu Jiang, Pu Zhou   +11 more
doaj   +1 more source