Results 71 to 80 of about 440,979 (305)

Numerical Simulation and Validation of Thermoeletric Generator Based Self-Cooling System with Airflow

Energies, 2019
In this paper, a general numerical methodology is developed and validated for the simulation of steady as well as transient thermal and electrical behaviors of thermoelectric generator (TEG)-based air flow self-cooling systems. The present model provides
Cheng-Xian Lin, Robel Kiflemariam
doaj   +1 more source

Etching suspended superconducting hybrid junctions from a multilayer [PDF]

, 2012
A novel method to fabricate large-area superconducting hybrid tunnel junctions with a suspended central normal metal part is presented. The samples are fabricated by combining photo-lithography and chemical etch of a superconductor - insulator - normal ...
Buisson, Olivier, Courtois, Hervé, Gilles, B., Nguyen, Hung Q., Pascal, Laetitia, Peng, Z. H., Winkelmann, Clemens   +6 more
core   +2 more sources

Reduction of Oxide Inclusions During the High‐Frequency Welding of Steel via a Nonthermal Ar/H2 Plasma Jet

Advanced Engineering Materials, EarlyView.
High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin, Lienhard Wegewitz, René Gustus, Henning Wiche, Wolfgang Maus‐Friedrichs   +4 more
wiley   +1 more source

Spectroscopy of a synthetic trapped ion qubit

, 2017
$^{133}\text{Ba}^+$ has been identified as an attractive ion for quantum information processing due to the unique combination of its spin-1/2 nucleus and visible wavelength electronic transitions. Using a microgram source of radioactive material, we trap
Campbell, Wesley C., Christensen, Justin E., Hucul, David, Hudson, Eric R.   +3 more
core   +2 more sources

3D‐Printed Giant Magnetoresistive (GMR) Sensors Based on Self Compliant Springs

Advanced Engineering Materials, EarlyView.
This work explores 3D‐printed GMR sensors utilizing self‐compliant spring structures and conductive PLA composites. By optimizing arm width, we achieved high piezoresistive (0.34%/mm) and magnetoresistive (0.77%/mT) sensitivities. Demonstrated through Bluetooth‐integrated pressure and magnetic position sensing, these full printed low‐cost, customizable
Josu Fernández Maestu, Nelson Pereira, Javier Vicente, Carmen Rial Tubio, Senentxu Lanceros‐Méndez   +4 more
wiley   +1 more source

Heat Transfer Challenges in Semiconductors Processing and the Applications of Heat Pipes for Efficient Heat Removal

Journal of King Saud University: Engineering Sciences, 2003
The rapid developments in electronics and semiconductors processing led to the use of very compact and precise units with relatively large power and excellent performance.
M. Alahmad, F. Abd El-Aleem
doaj   +1 more source

Doppler-free frequency modulation spectroscopy of atomic erbium in a hollow cathode discharge cell

, 2011
The erbium atomic system is a promising candidate for an atomic Bose-Einstein condensate of atoms with a non-vanishing orbital angular momentum ($L \neq 0$) of the electronic ground state.
A.S. Bell, B. Dubetsky, B. Smeets, C.C. Bradley, D. Jaksch, D. Sukachev, G. Ritt, G.C. Bjorklund, G.G. Lister, G.K. Brennen, H. Brammer, I. Danshita, J. Ulitzsch, J.E. Lawler, J.J. McClelland, J.S. Ross, L. Santos, M. Lu, M. Weitz, O. Mandel, P. Buonsante, R. Bourouis, R. Grimm, T. Salger   +23 more
core   +1 more source

Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley   +1 more source

Characterization of a Recyclate‐Based MgO‐Steel Composite As‐Sintered Inert Anode Candidate After Exposure to Cryolite Electrolysis

Advanced Engineering Materials, EarlyView.
Carbon‐free inert anodes are essential for decarbonizing aluminum electrolysis. This study investigates a recyclate‐based MgO‐316L steel composite anode tested under galvanostatic Hall–Héroult conditions in cryolite at 1000°C. Microstructural analysis reveals selective MgO fluorination, spinel and oxide layer formation, electrolyte infiltration, and ...
Serhii Yaroshevskyi, Alexander Adamczyk, Nora Brachhold, Gert Schmidt, Jana Hubálková, R. Gumeniuk, Alexandros Charitos, Christos G. Aneziris   +7 more
wiley   +1 more source

Rotational cooling of heteronuclear molecular ions with ^1-Sigma, ^2-Sigma, ^3-Sigma and ^2-Pi electronic ground states

, 2004
The translational motion of molecular ions can be effectively cooled sympathetically to translational temperatures below 100 mK in ion traps through Coulomb interactions with laser-cooled atomic ions.
C. W. Bauschlicher, D. Brink, E. E. Whiting, H. Lefebvre-Brion, I. I. Sobelman, I. Kovács, I. S. Vogelius, J. B. Foresman, J. B. Tatum, J. D. Weinstein, J. J. Sakurai, K. Huber, L. B. Madsen, L. E. Snyder, M. Drewsen, M. Drewsen, M. F. Kimmitt, R. Loudon, T. P. Snow, U. Fröhlich   +19 more
core   +1 more source