Results 61 to 70 of about 395,735 (308)

Revisiting Stability Criteria in Ball‐Milled High‐Entropy Alloys: Do Hume–Rothery and Thermodynamic Rules Equally Apply?

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez, Alejandro F. Manchón‐Gordón, Antonio Vidal‐Crespo, Rafael Caballero‐Flores, Jhon J. Ipus, Clara F. Conde   +5 more
wiley   +1 more source

Few-Electron Single and Double Quantum Dots in an InAs Two-Dimensional Electron Gas

PRX Quantum, 2021
Most proof-of-principle experiments for spin qubits have been performed with GaAs-based quantum dots because of the excellent control they offer over tunneling barriers and the orbital and spin degrees of freedom. Here we present the first realization of
Christopher Mittag, Jonne V. Koski, Matija Karalic, Candice Thomas, Aymeric Tuaz, Anthony T. Hatke, Geoffrey C. Gardner, Michael J. Manfra, Jeroen Danon, Thomas Ihn, Klaus Ensslin   +10 more
doaj   +1 more source

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

Advanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi, Pasquale Guglielmi, Gianfranco Palumbo, Giuseppe Carbone   +3 more
wiley   +1 more source

A cross-sectional transmission electron microscopy study of iron recovered from a laser-heated diamond anvil cell

, 2008
This paper discusses the use of a focused ion beam for the preparation of cross-sectional transmission electron microscopy specimens from small samples, typically 150 micron in diameter, that have been recovered from a laser-heated diamond anvil cell. We
Greaves, Graeme, Jephcoat, A P, Donnelly, S. E., Bouhifd, M A   +3 more
core   +1 more source

AlGaN/GaN 2-D Electron Gas for Highly Sensitive and High-Temperature Current Sensing

, 2021
This article presents the design and characterization of a direct current (dc) sensor utilizing the Hall effect in AlGaN/GaN 2-D electron gas (2DEG) four-terminal devices and a flux concentrator. The sensor was fabricated from an AlGaN/GaN/Si wafer grown
Nguyen, Tuan Khoa, Nguyen, Nam-Trung, Dimitrijev, Sima, Nguyen, Nam Trung, Dinh, Toan, Nguyen, Thanh, Zhu, Yong, Dao, Dzung Viet, Han, Jisheng, Moghadam, Hamid Amini, Nguyen, Hong Quan, Amini Moghadam, Hamid, https://orcid.org/   +12 more
core   +1 more source

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

Improving measurements of SF₆ for the study of atmospheric transport and emissions [PDF]

, 2011
Sulfur hexafluoride (SF6) is a potent greenhouse gas and useful atmospheric tracer. Measurements of SF6 on global and regional scales are necessary to estimate emissions and to verify or examine the performance of atmospheric transport models.
M. Rigby, Butler, J. H., Elkins, J. W., D. J. Mondeel, Nance, J. D., Dutton, G. S., Hurst, D. F., J. H. Butler, G. S. Dutton, J. W. Elkins, F. L. Moore, B. D. Hall, Hall, B. D., Mondeel, D. J., Moore, F. L., D. F. Hurst, J. D. Nance, Rigby, M.   +17 more
core   +1 more source

Can electron multipacting explain the pressure rise in a cold bore superconducting undulator?

Physical Review Special Topics. Accelerators and Beams, 2010
Preliminary studies performed with the cold bore superconducting undulator installed in the ANKA (Angstrom source Karlsruhe) storage ring suggest that the beam heat load is mainly due to the electron wall bombardment.
S. Casalbuoni, S. Schleede, D. Saez de Jauregui, M. Hagelstein, P. F. Tavares   +4 more
doaj   +1 more source

Energy in a finite two-dimensional spinless electron gas

AIP Advances, 2013
We study the properties of a finite two-dimensional electron gas system in the Hartree-Fock approximation. We obtain exact analytical expressions for the energy in a finite two-dimensional fully spin-polarized (spinless) system of electrons interacting ...
Orion Ciftja, Bradley Sutton, Ashley Way
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