Results 31 to 40 of about 7,063 (263)

General approach to state-dependent optical-tweezer traps for polar molecules

Physical Review Research, 2021
State-dependent optical tweezers can be used to trap a pair of molecules with a separation much smaller than the wavelength of the trapping light, greatly enhancing the dipole-dipole interaction between them.
L. Caldwell, M. R. Tarbutt
doaj   +1 more source

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

Laser cooling and loading of Rb into a large period, quasi-electrostatic, optical lattice [PDF]

, 2005
This thesis reports on the design and construction of, and results from, an optical-dipole trapping apparatus developed to confine ultracold rubidium atoms in a conservative, large period, optical-dipole trap. An ultra-high vacuum system was designed and
Griffin, Paul F, Griffin, Paul F.
core  

Improved magneto–optical trapping of a diatomic molecule

New Journal of Physics, 2015
We present experimental results from a new scheme for magneto–optically trapping strontium monofluoride (SrF) molecules, which provides increased confinement compared to our original work.
D J McCarron, E B Norrgard, M H Steinecker, D DeMille   +3 more
doaj   +1 more source

Low‐Angle Grain Boundaries and Re‐Segregation in Single‐Crystalline Ni‐Base Superalloys

Advanced Engineering Materials, EarlyView.
This work demonstrates that Re‐segregation at low‐angle grain boundaries (LAGBs) in Ni‐base superalloys is influenced by misorientation angle. Advanced microscopy and atom probe tomography reveal that higher misorientation angles increases Re‐segregation.
Alireza B. Parsa, Aparna Saksena, Alesander Kostka, Pascal Thome, Felicitas Scholz, Alexandre Mussi, Christoph Somsen, Baptiste Gault, Jan Frenzel, Gunther Eggeler   +9 more
wiley   +1 more source

A C0(_2) laser lattice experiment for cold atoms [PDF]

, 2007
This thesis presents work on a laser cooling experiment designed for trapping Rb atoms in a CO(_2) laser optical trap. Some emphasis is placed on experimental features designed to allow the future implementation of a neutral atom quantum computation ...
Weatherill, Kevin J.
core  

External and Internal Cracking Caused by Heat Treatment in Laser Powder Bed Fusion‐Fabricated Inconel 738LC Components

Advanced Engineering Materials, EarlyView.
Manufacturing problems such as heat treatment‐induced cracking hinder the widespread application of the laser powder bed fusion (LPBF) process to superalloys. In this study, cracks in the LPBF components of Inconel 738LC superalloy are characterized after heat treatment at various temperature ranges, revealing two distinct cracking behaviors.
Kosuke Kuwabara, Masahiro Kusano, Ayako Ikeda, Toshio Osada, Makoto Watanabe   +4 more
wiley   +1 more source

An optically guided atomic fountain [PDF]

, 1999
This thesis describes the development of a laser-cooling experiment aimed at efficient transfer of cold atoms over a short distance, for loading into a conservative atom trap.
Davies, Hilary Jane, Davies, H.J.
core  

Laser cooling and trapping of radioactive atoms [PDF]

, 2003
Laser cooling and trapping techniques made possible during the last two decades important achievements in the atomic physics and quantum mechanics fields.
A. Burchianti, MAI, Bruno, S. N. Atutov, A. Dainelli, SCANSANI, Elisabetta, Stancari, G., Biancalana, V., STANCARI, Giulio, Burchianti, A., Scansani, E., Dainelli, A., Mariotti, E., Tomassetti, L., V. Biancalana, Corradi, L., TOMASSETTI, Luca, GUIDI, Vincenzo, L. Moi, E. Mariotti, E. Scansani, V. Guidi, S. Veronesi, Atutov, S., C. Marinelli, Marinelli, C., Veronesi, S., B. Mai, Mai, B., ATUTOV, S. N., Valerio Biancalana, CALABRESE, Roberto, Moi, L., G. Stancari, R. Calabrese, L. Corradi, L. Tomassetti, Calabrese, R., ATOUTOV, Serguei, Guidi, V.   +38 more
core   +1 more source

Evaporative cooling by pulse width modulation (PWM) of optical dipole traps

Physical Review Research
We introduce a method for cooling atoms in an optical dipole trap using pulse-width modulation (PWM) technique, without reducing the laser power of the dipole trap. The PWM technique involves digital modulation of the trap at a fixed frequency.
S. Sagar Maurya, Joel M. Sunil, Monu Bhartiya, Pranab Dutta, Jay Mangaonkar, Rahul Sawant, Umakant D. Rapol   +6 more
doaj   +1 more source