Results 91 to 100 of about 126,256 (297)

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

Pulsed Frequency Shifted Feedback Laser for Accurate Long Distance Measurements: Beat Order Determination

, 2012
Long-distance measurements (10 m - 1000 m) with an accuracy of 10-7 is a challenge for many applications. We show that it is achievable with Frequency Shifted Feedback (FSF) laser interferometry technique, provided that the determination of the radio ...
Amann, Azouiqui, Balle, Golubovic, Guillet de Chatellus, Ito, Jean-Paul Pique, Kasahara, Kowalski, Le Floch, Nakamura, Nakamura, Nakamura, Nakamura, Nakamura, Ogurtsov, Ogurtsov, Pique, Pique, Polhemus, Stellpflug, Yatsenko, Zhang   +22 more
core   +5 more sources

Low‐Angle Grain Boundaries and Re‐Segregation in Single‐Crystalline Ni‐Base Superalloys

Advanced Engineering Materials, EarlyView.
This work demonstrates that Re‐segregation at low‐angle grain boundaries (LAGBs) in Ni‐base superalloys is influenced by misorientation angle. Advanced microscopy and atom probe tomography reveal that higher misorientation angles increases Re‐segregation.
Alireza B. Parsa, Aparna Saksena, Alesander Kostka, Pascal Thome, Felicitas Scholz, Alexandre Mussi, Christoph Somsen, Baptiste Gault, Jan Frenzel, Gunther Eggeler   +9 more
wiley   +1 more source

Single-Element Dual-Interferometer for Precision Inertial Sensing: Sub-Picometer Structural Stability and Performance as a Reference for Laser Frequency Stabilization. [PDF]

Sensors (Basel), 2023
Huarcaya V, Dovale Álvarez M, Yamamoto K, Yang Y, Gozzo S, Martínez Cano P, Mehmet M, Esteban Delgado JJ, Jia J, Heinzel G.   +9 more
europepmc   +1 more source

Corrosion and Process Analysis of a Preoxidized MgO Recyclate‐Based Cermet Anode in Laboratory‐Scale Na‐Cryolite Molten Salt Electrolysis of Aluminum at 1000°C

Advanced Engineering Materials, EarlyView.
EDX elemental map of the pre‐oxidized MgO–steel cermet anode cross section after electrolysis. The development of inert anodes for aluminum electrolysis remains challenging due to the high corrosivity of cryolite‐based melts at 950°C–1000°C. This study investigates the corrosion and process behavior of a carbon‐free MgO–steel cermet anode derived from ...
Alexander Adamczyk, Farhan Hossain, Felipe A. Garcia Paz, Serhii Yaroshevskyi, Felix Drechsler, Daniel Vogt, Christos G. Aneziris, Alexandros Charitos   +7 more
wiley   +1 more source

Investigation of laser dynamics, modulation and control by means of intra-cavity time varying perturbation Semiannual status report [PDF]

Laser dynamics, control, and stabilization of optical frequency ...
Harris, S. E.
core   +3 more sources

Raman Spectroscopic Identification of Oxide Phases in a Corroded MgO–Steel Composite Anode Used in Aluminum Molten Salt Electrolysis

Advanced Engineering Materials, EarlyView.
Micro‐Raman spectroscopy is applied to characterize corrosion products in a recycled‐based MgO–316L steel composite anode after molten salt electrolysis. A depth‐dependent Fe–O/Fe–Al–O layer sequence of magnetite, hercynite, and an Al‐doped magnetite transition zone is identified.
Felix Drechsler, Serhii Yaroshevskyi, Alexander Adamczyk, Mahnaz Mehdizadehlima, Julia Richter, Cameliu Himcinschi, David Rafaja, Alexandros Charitos, Christos G. Aneziris, Jens Kortus   +9 more
wiley   +1 more source

Self-heterodyne mixing method of two inter-mode beat frequencies for frequency stabilization of a three-mode He-Ne laser

AIP Advances, 2012
We present a robust self-heterodyne mixing method of two inter-mode beat frequencies suitable for frequency stabilization of a three longitudinal-mode (3-mode) He-Ne laser at 633 nm.
Jeongmin Lee, Tai Hyun Yoon
doaj   +1 more source

Calibrating an interferometric laser frequency stabilization to MHz precision

, 2012
We report on a calibration procedure that enhances the precision of an interferometer based frequency stabilization by several orders of magnitude.
Barwood, Birch, Born, Heydemann, Kobtsev, Mack, Scholl   +6 more
core   +1 more source

Microresonator-stabilized extended-cavity diode laser for supercavity frequency stabilization

Optics Letters, 2017
We demonstrate a simple, compact, and cost-effective laser noise reduction method for stabilizing an extended cavity diode laser to a 3x105 finesse mirror Fabry-P rot (F-P) cavity corresponding to resonance linewidth of 10 kHz using a crystalline MgF2 whispering gallery mode microresonator (WGMR).
Lim, Jinkang, Savchenkov, Anatoliy A., Matsko, Andrey B., Huang, Shu-Wei, Maleki, Lute, Wong, Chee Wei   +5 more
openaire   +3 more sources