Results 121 to 130 of about 621,636 (310)

Coherence in Microchip Traps

, 2004
We report the coherent manipulation of internal states of neutral atoms in a magnetic microchip trap. Coherence lifetimes exceeding 1 s are observed with atoms at distances of $5-130 \mu$m from the microchip surface.
E. Jané, Jakob Reichel, Peter Hommelhoff, Philipp Treutlein, R. Folman, T. C. Edwards, Theodor W. Hänsch, Tilo Steinmetz   +7 more
core   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

Individual charge traps in silicon nanowires: Measurements of location, spin and occupation number by Coulomb blockade spectroscopy

, 2006
We study anomalies in the Coulomb blockade spectrum of a quantum dot formed in a silicon nanowire. These anomalies are attributed to electrostatic interaction with charge traps in the device.
Berkovits, Bhatt, Boehm, Buehler, Bylander, Castner, Elzerman, Feher, Fujisawa, G. Molas, Gorman, Grupp, Gustavsson, Hofheinz, Hollenberg, Imry, Itakura, Jehl, Jung, Kane, Kirton, Lafarge, Levitov, Loss, Lu, M. Hofheinz, M. Sanquer, M. Vinet, Molas, Molas, Molenkamp, Naaman, Rokhinson, Ruzin, S. Deleonibus, Schofield, Shafarman, Tyryshkin, Waugh, Weinmann, X. Jehl, Xiao, Xiao, Yano, Zimmerman   +44 more
core   +2 more sources

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Temperature-Dependent Electrical Characteristics and Low-Frequency Noise Analysis of AlGaN/GaN HEMTs

IEEE Journal of the Electron Devices Society
In this paper, we investigate the electrical characteristics of AlGaN/GaN HEMTs at the lowest temperature of 20 K. The measurement results indicate that the output current of the device decreases significantly with increasing temperature at temperature ...
Qiang Chen, Y. Q. Chen, Chang Liu, Zhiyuan He, Yuan Chen, K. W. Geng, Y. J. He, W. Y. Chen   +7 more
doaj   +1 more source

Effect of Laser Deoxidation on Adhesive‐Bonded Aluminum in an Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
This study investigates laser ablation of aluminum under oxygen‐free conditions. The goal is to produce oxide‐free substrates that enable improved adhesive bonding with epoxy. Optimized laser parameters (90% overlap, 300 µJ) combined with oxide‐free substrates result in the highest tensile strength of the adhesive bond.
Sandra Gerland, Finn‐Lennard Janthur, Sarah Seffer, Jörg Hermsdorf, Ludger Overmeyer, Annika Raatz   +5 more
wiley   +1 more source

Long-Lasting Bisexual Lures for Assessing Moth Biodiversity and Monitoring Alien Species in Zoos and Botanical Gardens: Case Study in Zoo of Debrecen (NE Hungary)

Journal of Zoological and Botanical Gardens
Zoos and botanical gardens have a special role in the promotion, presentation and conservation of biodiversity in urbanised environments. Additionally, they provide special habitats for alien and invasive species.
Szabolcs Szanyi, Csenge Lelle Kovács, Miklós Tóth, Ottó Lincz, Gergely Sándor Nagy, Zoltán Varga, Antal Nagy   +6 more
doaj   +1 more source

Poverty Traps [PDF]

no abstract given ...
Costas Aariadis, John Stachurski
core  

Wpływ barw pułapek Moerickego na liczebność i zróżnicowanie pozyskiwanych pszczół (Apoidea, Hymenoptera) [PDF]

, 1994
In deciduous and pine forests the effect of white, yellow and Ыие Moericke traps on numbers and sped es diversity of Apoidea was assessed. It was proven that the most useful in forest are white traps.
Banaszak, Józef, Cierzniak, Tomasz, Szymański, Remigiusz   +2 more
core  

Combined Process‐ and Phase‐Field‐Simulation to Predict the Microstructure of Single‐Crystal Ni‐Based Superalloys

Advanced Engineering Materials, EarlyView.
A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm, André B. Baldissera, Rainer Völkl, Uwe Glatzel   +3 more
wiley   +1 more source