Results 51 to 60 of about 73,664 (313)

Atomic Depth Image Transfer of Large-Area Optical Quartz Materials Based on Pulsed Ion Beam

Micromachines
The high-efficiency preparation of large-area microstructures of optical materials and precision graphic etching technology is one of the most important application directions in the atomic and near-atomic-scale manufacturing industry.
Shuyang Ran, Kefan Wen, Lingbo Xie, Xingyu Zhou, Ye Tian, Shuo Qiao, Feng Shi, Xing Peng   +7 more
doaj   +1 more source

Plasma Processing of Large Curved Surfaces for SRF Cavity Modification [PDF]

, 2014
Plasma based surface modification of niobium is a promising alternative to wet etching of superconducting radio frequency (SRF) cavities. The development of the technology based on Cl2/Ar plasma etching has to address several crucial parameters which ...
Im, Do, Phillips, L., Popović, S., Upadhyay, J., Valente-Feliciano, A. -M., Vušković, L.   +5 more
core   +4 more sources

Enhancing CoFe Catalysts with V2CTX MXene‐Derived Materials for Anion Exchange Membrane Electrolyzers

Advanced Functional Materials, EarlyView.
MXene dervied CoFe composites show increased initial Oxygen Evolution Reaction (OER) activity compared to the pure CoFe and MXene in an Anion Exchange Membrane device. Vanadium vacancies in the MXene plays a role in increased OER activity and hinders Fe leaching in the AEM device over using the pure V2C MXene as a support material for the CoFe ...
Can Kaplan, Karuppasamy Dharmaraj, Thorsten Schultz, Leiqiang Qin, Ningjun Chen, Danielle A. Douglas‐Henry, Bastian Schmiedecke, Merve Buldu‐Akturk, Axel Zuber, Iris Dorbandt, Maximilian Reinhardt, Yael Rodriguez‐Ayllon, Yan Lu, Valeria Nicolosi, Norbert Koch, Johanna Rosen, Michelle P. Browne   +16 more
wiley   +1 more source

Low temperature sacrificial wafer bonding for planarization after very deep etching [PDF]

, 1994
A new technique, at temperatures of 150°C or 450°C, that provides planarization after a very deep etching step in silicon is presented. Resist spinning and layer patterning as well as realization of bridges or cantilevers across deep holes becomes ...
Berenschot, J.W., Elwenspoek, M., Fluitman, J.H.J., Spiering, V.L.   +3 more
core   +2 more sources

Enhancing Direct Solar Water Splitting via ALD of Multifunctional TiO2/Pt Nanoparticle Coatings With Engineered Interfaces to GaAs/GaInP Tandem Cells

Advanced Functional Materials, EarlyView.
Multifunctional atomic layer deposited coatings and interface treatments enhance direct solar water splitting on GaAs/GaInP tandem cells. Optimized TiO2/Pt nanoparticle bilayers ensure durability and catalytic efficiency with minimal optical losses, while H2 plasma pretreatments maximize photovoltage and interfacial charge extraction.
Tim F. Rieth, Verena Streibel, Oliver Bienek, Sergej Levashov, Johannes Dittloff, Kristof Möller, Johanna Eichhorn, Matthias M. May, Ian D. Sharp   +8 more
wiley   +1 more source

Lithographic band gap tuning in photonic band gap crystals [PDF]

, 1996
We describe the lithographic control over the spectral response of three-dimensional photonic crystals. By precise microfabrication of the geometry using a reproducible and reliable procedure consisting of electron beam lithography followed by dry ...
Arbet-Engels, V., Cheng, C. C., Scherer, A., Yablonovitch, E.   +3 more
core   +1 more source

Composition and Resulting Band Alignment at the TiO2/InP Heterointerface: A Fundamental Study Combining Photoemission Spectroscopy and Theory

Advanced Functional Materials, EarlyView.
The chemical composition and band alignment are systematically investigated at the TiO2/InP heterointerface. Thin TiO2 films are deposited by ALD on atomically ordered, P‐terminated p‐InP(100). By combining UPS, XPS, and ab initio molecular dynamics, the atomistic structure and electronic alignment are revealed.
Mohammad Amin Zare Pour, Muhammad Nawaz Qaisrani, Christian Höhn, Johannes Laurenz Wolf, Negin Mogharehabed, Jennifer Velazquez Rojas, Wolfram Jaegermann, Erich Runge, Roel van de Krol, Thomas Hannappel, Christian Dreßler, Agnieszka Paszuk   +11 more
wiley   +1 more source

Nd-doped aluminum oxide integrated amplifiers at 880 nm, 1060 nm, and 1330 nm [PDF]

, 2010
Neodymium-doped Al2O3 layers were deposited on thermally oxidized Si substrates and channel waveguides were patterned using reactive-ion etching. Internal net gain on the Nd3+ transitions at 880, 1064, and 1330 nm was investigated,\ud yielding a maximum ...
Ay, F., Dalfsen, K. van, Pollnau, M., Wörhoff, K., Yang, J.   +4 more
core   +1 more source

Holistic approach to dissolution kinetics : linking direction-specific microscopic fluxes, local mass transport effects and global macroscopic rates from gypsum etch pit analysis [PDF]

, 2013
Dissolution processes at single crystal surfaces often involve the initial formation and expansion of localized, characteristic (faceted) etch-pits at defects, in an otherwise comparatively unreactive surface.
Abendan, Alonso-Azcárate, Alonso-Azcárate, Arvidson, Bard, Binnig, Blum, Blum, Bosbach, Bosbach, Bosbach, Brantley, Brown, Buchanan, Burns, Burt, Cama, Cama, Chen, Chow, Chow, Christoffersen, Colombani, Colombani, Compton, Compton, Compton, Dove, Engstrom, Fan, Fleischmann, Ford, Forster, Fujiwara, Gasperino, Hall, Hartman, Heinze, Hong, Howell, Jeschke, Jeschke, Jones, Jones, Jordan, Kowacz, Lasaga, Lasaga, Levich, Liu, Lüttge, Lüttge, Lüttge, MacInnis, Macpherson, Macpherson, Macpherson, Macpherson, Martin A. Edwards, Massimo Peruffo, Mbogoro, McGeouch, McGeouch, Michael M. Mbogoro, Morel, Morse, Nancollas, Olhoeft, Orton, Pachon-Rodriguez, Patrick R. Unwin, Peltonen, Ruiz-Agudo, Ruiz-Agudo, Ruiz-Agudo, Sangwal, Schecher, Schofield, Singh, Stumm, Svensson, Tang, Tang, Tang, Taylor, Titiz-Sargut, Unwin, Unwin, Van Driessche, Van Rosmalen, Vanysek, Vavouraki, Wang, White, Wightman, Zhang   +95 more
core   +1 more source

Bimetallic Nanoparticles as Cocatalysts for Photocatalytic Hydrogen Production

Advanced Functional Materials, EarlyView.
Recent developments have introduced bimetallic nanoparticles as effective cocatalysts for photocatalytic systems. This review explores the rapidly expanding research on bimetallic cocatalysts for photocatalytic production of hydrogen, emphasizing the creation of carrier‐selective contacts, localized surface plasmon resonance effects, methodologies for ...
Yufen Chen, Asier Agrelo‐Lestón, Ignasi Burgués‐Ceballos, Jordi Llorca, Lluís Soler   +4 more
wiley   +1 more source