Results 81 to 90 of about 259,483 (342)

Nucleation Control in Physical Vapor Transport Growth of AlN Single Crystals on Polycrystal Tungsten Substrates

Medžiagotyra, 2019
The improved resistively-heated furnace with two heaters established a vertical thermal gradient to control nucleation during AlN single crystals Physical Vapor Transport (PVT) growth on polycrystal tungsten substrates.
Honglei WU, Zuoyan QIN, Xueyong TIAN, Zhenhua SUN, Baikui LI, Ruisheng ZHENG, Ke WANG   +6 more
doaj   +1 more source

Polarization fields in nitride nanostructures: ten points to think about

, 1999
Macroscopic polarization, both of intrinsic and piezoelectric nature, is unusually strong in III-V nitrides, and the built in electric fields in the layers of nitride-based nanostructures, stemming from polarization changes at heterointerfaces, have a ...
Ambacher, Ambacher, Bernardini, Bernardini, Bernardini, Bernardini, Bernardini, Burns, Bykhovski, Chichibu, Della Sala, Di Carlo, Fabio Bernardini, Fiorentini, Gil, Im, King-Smith, Kodozoy, Langer, Lefebvre, Oberhuber, Peng, Resta, Shimada, Takeuchi, Vanderbilt, Vincenzo Fiorentini, Yu   +27 more
core   +1 more source

Nitridogermanate Nitrides Sr7[GeN4]N2 and Ca7[GeN4]N2 [PDF]

, 2008
The alkaline earth nitridogermanate nitrides AE7[GeN4]N2 (AE = Ca, Sr) have been synthesized using a Na flux technique in sealed Ta tubes. According to single-crystal X-ray diffraction the isotypic compounds crystallize in space group Pbcn (No.
Johrendt, Dirk, Junggeburth, Sebastian C., Oeckler, Oliver, Schnick, Wolfgang   +3 more
core   +1 more source

Electroactive Metal–Organic Frameworks for Electrocatalysis

Advanced Functional Materials, EarlyView.
Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska, Yutong Luo, Ruyan Zhao, Jianjun Zhang, Mingchao Wang, Xinliang Feng, Eike Brunner, Stefan Kaskel   +7 more
wiley   +1 more source

Anomalous relaxations and chemical trends at III-V nitride non-polar surfaces

, 1998
Relaxations at nonpolar surfaces of III-V compounds result from a competition between dehybridization and charge transfer. First principles calculations for the (110) and (10$\bar{1}$0) faces of zincblende and wurtzite AlN, GaN and InN reveal an ...
A. Garcia, A. Garcia, Alessio Filippetti, Andrea Bosin, C. B. Duke, D. M. Ceperley, D. Vanderbilt, D. Vogel, D. Vogel, F. A. Ponce, F. Bechstedt, F. Bernardini, F. Bernardini, G. Martin, G.-X. Qian, Giancarlo Cappellini, J. E. Jaffe, J. E. Jaffe, J. E. Northrup, J. Perdew, M. J. Paisley, M. Rohlfing, P. Manca, P. Santini, P. Schröer, R. Dreizler, R. G. Parr, V. Fiorentini, Vincenzo Fiorentini, Y. R. Wang   +29 more
core   +1 more source

Processes, microstructure and properties of vanadium microalloyed steels [PDF]

, 2009
Vanadium as an important alloying element in steels was initially associated with the properties achieved following tempering. Interest in the microstructure was stimulated by the advent of transmission electron microscopes with a resolution of ~1nm ...
Baker, T.N.
core   +1 more source

Auto‐Generated Valence States in Electrocatalysts for Boosting Oxygen and Hydrogen Evolution Kinetics in Alkaline Water/Alkaline Seawater/Simulated Seawater/Natural Seawater

Advanced Functional Materials, EarlyView.
This review systematically highlights the latest achievements in mixed‐valence states relevant to hydrogen and oxygen evolution reactions, providing essential insights into future directions and methods for large‐scale practical implementation. This critical review is expected to provide an overview of recent advancements in diverse valence‐state metal
Jitendra N. Tiwari, Gokul Bhaskaran, Krishan Kumar, Yun Suk Huh, Young‐Kyu Han   +4 more
wiley   +1 more source

Solid-State Color Centers for Single-Photon Generation

Photonics
Single-photon sources are important for integrated photonics and quantum technologies, and can be used in quantum key distribution, quantum computing, and sensing. Color centers in the solid state are a promising candidate for the development of the next
Greta Andrini, Francesco Amanti, Fabrizio Armani, Vittorio Bellani, Vincenzo Bonaiuto, Simone Cammarata, Matteo Campostrini, Thu Ha Dao, Fabio De Matteis, Valeria Demontis, Giovanni Di Giuseppe, Sviatoslav Ditalia Tchernij, Simone Donati, Andrea Fontana, Jacopo Forneris, Roberto Francini, Luca Frontini, Roberto Gunnella, Simone Iadanza, Ali Emre Kaplan, Cosimo Lacava, Valentino Liberali, Francesco Marzioni, Elena Nieto Hernández, Elena Pedreschi, Paolo Piergentili, Domenic Prete, Paolo Prosposito, Valentino Rigato, Carlo Roncolato, Francesco Rossella, Andrea Salamon, Matteo Salvato, Fausto Sargeni, Jafar Shojaii, Franco Spinella, Alberto Stabile, Alessandra Toncelli, Gabriella Trucco, Valerio Vitali   +39 more
doaj   +1 more source

Phosphorus Nitride P3N5 [PDF]

, 1996
Pure, stoichiometric, hydrogen-free, and crystalline phosphorus nitride P3N5 has been obtained for the first time by reaction of (PNCl2)3 and NH4Cl between 770 and 1050 K.
Krumeich, Frank, Lücke, Jan, Schnick, Wolfgang   +2 more
core   +1 more source

Ceramic Particle‐Reinforced Medium‐Entropy Alloys With Outstanding Mechanical Properties Prepared by Novel Micro‐LPBF

Advanced Functional Materials, EarlyView.
An innovative medium entropy alloy (MEA) composite material was fabricated via micro laser powder bed fusion (μ‐LPBF) with appropriate nano‐ceramic particles doping and exhibited markedly improved overall performance, including synergistically enhanced strength and ductility, increased hardness and compressive strength, improved wear resistance and ...
Zhonglin Shen, Mingwang Fu
wiley   +1 more source