Results 81 to 90 of about 393,882 (297)

Scattering approach to two-colour light forces and self-ordering of polarizable particles

open access: yesNew Journal of Physics, 2014
Collective coherent scattering of laser light by an ensemble of polarizable point particles creates long-range interactions, whose properties can be tailored by the choice of injected laser powers, frequencies, and polarizations. We use a transfer matrix
S Ostermann, M Sonnleitner, H Ritsch
doaj   +1 more source

Soliton dynamics at an interface between uniform medium and nonlinear optical lattice

open access: yes, 2009
We study trapping and propagation of a matter-wave soliton through the interface between uniform medium and a nonlinear optical lattice (NOL). Different regimes for transmission of a broad and a narrow soliton are investigated.
Abdullaev, Fatkhulla Kh.   +3 more
core   +1 more source

Impact of strain on the optical fingerprint of monolayer transition metal dichalcogenides [PDF]

open access: yes, 2017
Strain presents a straightforward tool to tune electronic properties of atomically thin nanomaterials that are highly sensitive to lattice deformations.
Berghäuser, Gunnar   +3 more
core   +2 more sources

Productivity‐Driven Optimization of Laser Powder Bed Fusion Parameters for IN718 Superalloy: Process Control, Microstructure, and Mechanical Properties

open access: yesAdvanced Engineering Materials, EarlyView.
This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat   +7 more
wiley   +1 more source

Tracking ultracold many-body systems in real time

open access: yesNew Journal of Physics, 2015
The variety of available probing techniques have established ultracold atoms as popular systems to study quantum many body physics. However, conventional approaches are usually destructive to the full ensemble, such that real time observation is ...
Christian Groß
doaj   +1 more source

Soliton Eigenvalue Control in Optical Lattices [PDF]

open access: yesPhysical Review Letters, 2004
We address the dynamics of higher-order solitons in optical lattices, and predict their self-splitting into the set of their single-soliton constituents. The splitting is induced by the potential introduced by the lattice, together with the imprinting of a phase tilt onto the initial multisoliton states.
Kartashov, Yaroslav V.   +6 more
openaire   +5 more sources

Optically-induced lensing effect on a Bose-Einstein condensate expanding in a moving lattice

open access: yes, 2004
We report the experimental observation of a lensing effect on a Bose-Einstein condensate expanding in a moving 1D optical lattice. The effect of the periodic potential can be described by an effective mass dependent on the condensate quasi-momentum.
C. Fort   +8 more
core   +1 more source

Anderson Lattice Description of Photoassociation in an Optical Lattice [PDF]

open access: yes, 2005
We consider atomic mixtures of bosons and two-component fermions in an optical lattice potential. We show that if the bosons are in a Mott-insulator state with precisely one atom per lattice, the photoassociation of bosonic and fermionic atoms into ...
Meystre, Pierre, Miyakawa, Takahiko
core   +1 more source

Raman Spectroscopic Identification of Oxide Phases in a Corroded MgO–Steel Composite Anode Used in Aluminum Molten Salt Electrolysis

open access: yesAdvanced Engineering Materials, EarlyView.
Micro‐Raman spectroscopy is applied to characterize corrosion products in a recycled‐based MgO–316L steel composite anode after molten salt electrolysis. A depth‐dependent Fe–O/Fe–Al–O layer sequence of magnetite, hercynite, and an Al‐doped magnetite transition zone is identified.
Felix Drechsler   +9 more
wiley   +1 more source

Quantum gas microscopy of ytterbium: cool me twice

open access: yesNew Journal of Physics, 2016
The site-resolved detection of ultracold atoms in optical lattice potentials is a powerful technique to study lattice models of correlated quantum matter. In their recent paper, Yamamoto et al (2016 New J. Phys.
Mukund Vengalattore
doaj   +1 more source

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