Results 131 to 140 of about 1,705,952 (334)

Vortex stabilization in Bose-Einstein condensate of alkali atom gas

, 1998
A quantized vortex in the Bose-Einstein condensation (BEC), which is known to be unstable intrinsically, is demonstrated theoretically to be stabilized by the finite temperature effect.
A. L. Fetter, B. Jackson, C. C. Bradley, C. Caroli, C. Caroli, D. A. Huse, D. A. W. Hutchinson, D. A. W. Hutchinson, D. M. Stamper-Kurn, D. S. Rokhsar, E. J. Mueller, E. P. Gross, E. P. Gross, F. Dalfovo, F. Dalfovo, F. Gygi, G. V. Chester, H. Hess, J. Bardeen, K. B. Davis, K.-P. Marzlin, K.-P. Marzlin, Kazushige Machida, L. Fetter, L. Fetter, L. Fetter, L. P. Pitaevskii, M. Edwards, M. Edwards, M. H. Anderson, N. Bogoliubov, N. Hayashi, N. Hayashi, N. Hayashi, P. A. Ruprecht, R. J. Dodd, R. J. Donnelly, S. Inouye, S. Sinha, S. V. Iordanskii, T. Isoshima, T. Isoshima, T. Ohmi, Tomoya Isoshima, V. N. Popov, V. V. Goldman   +45 more
core   +1 more source

Generation and propagation of a new kind of power-exponent-phase vortex beam.

Optics Express, 2019
A general analytical formula for the propagation of the new kind of power-exponent-phase vortex beam through a paraxial ABCD optical system is derived. With two different calculation methods, the evolution of the intensity distribution and phase contour ...
Donghui Shen, Ke Wang, Daomu Zhao
semanticscholar   +1 more source

Electron–Matter Interactions During Electron Beam Nanopatterning

Advanced Functional Materials, EarlyView.
This article reviews the electron–matter interactions important to nanopatterning with electron beam lithography (EBL). Electron–matter interactions, including secondary electron generation routes, polymer radiolysis, and electron beam induced charging, are discussed.
Camila Faccini de Lima, Prathiba Thamizhavel, Taylor J. Woehl   +2 more
wiley   +1 more source

Dissipative flow and vortex shedding in the Painlev\'e boundary layer of a Bose Einstein condensate

, 2003
Raman et al. have found experimental evidence for a critical velocity under which there is no dissipation when a detuned laser beam is moved in a Bose-Einstein condensate. We analyze the origin of this critical velocity in the low density region close to
A. Sommerfeld, Amandine Aftalion, C. Huepe, P. Morse, Qiang Du, Yves Pomeau   +5 more
core   +1 more source

Control of Polarization and Polar Helicity in BiFeO3 by Epitaxial Strain and Interfacial Chemistry

Advanced Functional Materials, EarlyView.
In BiFeO3 thin films, the interplay of interfacial chemistry, electrostatics, and epitaxial strain is engineered to stabilize homohelicity in polarization textures at the domain scale. The synergistic use of a Bi2O2‐terminated Aurivillius buffer layer and a highly anisotropic compressive epitaxial strain offers new routes to control the polar‐texture ...
Elzbieta Gradauskaite, Lilia Huynh, Natascha Gray, Quintin N. Meier, Marta D. Rossell, Morgan Trassin   +5 more
wiley   +1 more source

Proteins, Processing, and Properties of Adhesive Fluid Condensates Purified from Mussels

Advanced Functional Materials, EarlyView.
Mussels exhibit an unmatched proficiency for adhering to wet surfaces in salty environments—a remarkable ability that could inspire new biomedical and technical glues. The fluid protein condensates used to form the underwater mussel glue are extracted, reconstituted and characterized with advanced spectroscopy and nanomechanical analysis, revealing ...
Mathieu D. Rivard, Max Renner‐Rao, Nahid Hassanpour, Franziska Jehle, Chang‐Sheng Wang, Duy Anh Pham, Daniel J. Jackson, Xavier Banquy, Matthew J. Harrington   +8 more
wiley   +1 more source

Research on the Vortex States of Partially Coherent Vortex Beams

Photonics
The Mutual Optical Intensity (MOI) model is further developed to simulate the propagation of partially coherent X-ray vortex beams through free space. The intensity, phase, and amplitude distributions of the degree of coherence in the far field zone are ...
Weihong Sun, Xiangyu Meng, Junchao Ren, Huainan Yu, Yong Wang   +4 more
doaj   +1 more source

Terahertz Vortex Beam as a Spectroscopic Probe of Magnetic Excitations.

Physical Review Letters, 2019
Circularly polarized light with spin angular momentum is one of the most valuable probes of magnetism. We demonstrate that light beams with orbital angular momentum (OAM), or vortex beams, can also couple to magnetism exhibiting dichroisms in a ...
A. Sirenko, P. Marsik, C. Bernhard, T. Stanislavchuk, V. Kiryukhin, S. Cheong   +5 more
semanticscholar   +1 more source

An Ionic Gelation Powder for Ultrafast Hemostasis and Accelerated Wound Healing

Advanced Functional Materials, EarlyView.
An ultrafast ionic gelation‐activated hemostatic powder (AGCL) forms a hydrogel within ≈1 s upon contact with blood‐derived calcium ions. The AGCL powder enables rapid hemorrhage control, strong tissue adhesion, and enhanced healing. The powder's pre‐crosslinked polymer network ensures high blood uptake and stability, offering effective treatment for ...
Youngju Son, Kyusoon Pak, Taehoon Lee, Monica Celine Prayogo, Jinyoung Choi, Sukkyung Kang, Minjoo Kang, Byungkook Oh, Sang Yu Sun, Sanha Kim, Sung Gap Im, Sangyong Jon, Steve Park   +12 more
wiley   +1 more source

Controlled Generation and Manipulation of Vortex Dipoles in a Bose-Einstein Condensate

Physical Review X, 2011
We propose methods to generate and manipulate vortex dipoles in an atomic Bose-Einstein condensate using Gaussian beams of red- or blue-detuned laser. Vortex dipoles with controlled velocities are shown to be created and launched by a red-detuned beam ...
Tomohiko Aioi, Tsuyoshi Kadokura, Tetsuo Kishimoto, Hiroki Saito   +3 more
doaj   +1 more source