Results 91 to 100 of about 1,427,851 (302)

Sound speed of a Bose-Einstein condensate in an optical lattice

open access: yes, 2007
The speed of sound of a Bose-Einstein condensate in an optical lattice is studied both analytically and numerically in all three dimensions. Our investigation shows that the sound speed depends strongly on the strength of the lattice.
Biao Wu   +4 more
core   +1 more source

Application of Raman and Photoluminescence Spectroscopy to MgO‐C Refractories

open access: yesAdvanced Engineering Materials, EarlyView.
Visible to near infrared luminescence of MgO is studied on MgO‐C bricks and nominally pure MgO powder, with focus on two similar sharp high‐intensity signals, at 699 and 871 nm, each surrounded by symmetrical sidebands. The nature of these sidebands is investigated by temperature‐dependent spectroscopic measurements, confirming phonon involvement by ...
Julia Richter   +5 more
wiley   +1 more source

Thickness-driven shift of the superconducting dome in the phase diagram of epitaxial cuprate thin films [PDF]

open access: yesAPL Materials
The thickness-driven disorder effect has long been subject of interest in thin-film superconductors, given the direct relation between the superconductivity and film thickness.
Han-Byul Jang   +3 more
doaj   +1 more source

A systematic method for constructing time discretizations of integrable lattice systems: local equations of motion

open access: yes, 2010
We propose a new method for discretizing the time variable in integrable lattice systems while maintaining the locality of the equations of motion. The method is based on the zero-curvature (Lax pair) representation and the lowest-order "conservation ...
Ablowitz M J   +14 more
core   +1 more source

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

open access: yesAdvanced 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   +5 more
wiley   +1 more source

Optimal boundary control in a micromixer

open access: yesExamples and Counterexamples
This work studies mathematical foundations for optimal boundary control of mixers which mix two fluid phases. Existence of optima is proved and the influence of common objective functionals is discussed.
Manuel Wegmann   +3 more
doaj   +1 more source

Lattice matter [PDF]

open access: yesNuclear Physics B - Proceedings Supplements, 2002
I review recent developments in the study of strongly interacting field theories with non-zero chemical potential mu. In particular I focus on (a) the determination of the QCD critical endpoint in the (mu,T) plane; (b) superfluid condensates in Two Color QCD; and (c) Fermi surface effects in the NJL model.
openaire   +2 more sources

Slow Thermalization Between a Lattice and Free Bose Gas

open access: yes, 2013
Using a 3D spin-dependent optical lattice, we study thermalization and energy exchange between two ultracold Bose gases, one of which is bound to the lattice and another that is free from the lattice potential.
Chen, David   +3 more
core   +1 more source

Phenomenological and Physically Based Modeling of Flow Stress and Strengthening Mechanism of Inconel 718

open access: yesAdvanced Engineering Materials, EarlyView.
Nickel‐based alloys are widely used in high‐temperature applications due to their excellent mechanical strength and oxidation resistance. However, properties such as high‐temperature strength and pronounced work‐hardening make them difficult to machine.
Soheil Rooein   +2 more
wiley   +1 more source

Local magnetostriction measurement in a cobalt thin film using scanning probe microscopy

open access: yesAIP Advances, 2018
The local magnetostriction measurement has become an emerging issue because strain-mediated nanocomposites have received considerable attention due to their potential applications for high sensitivity sensors and high density energy harvesters.
Kwang-Eun Kim, Chan-Ho Yang
doaj   +1 more source

Home - About - Disclaimer - Privacy