Results 41 to 50 of about 118,557 (293)

Optical Random Riemann Waves in Integrable Turbulence [PDF]

, 2017
We examine integrable turbulence (IT) in the framework of the defocusing cubic one-dimensional nonlinear Schr\"{o}dinger equation. This is done theoretically and experimentally, by realizing an optical fiber experiment in which the defocusing Kerr ...
El, Gennady, Gustave, Francois, Randoux, Stephane, Suret, Pierre   +3 more
core   +2 more sources

Effect of atmospheric turbulence on propagation properties of optical vortices formed by using coherent laser beam arrays

, 2008
In this paper, we consider the effect of the atmospheric turbulence on the propagation of optical vertex formed from the radial coherent laser beam array, with the initially well-defined phase distribution.
Andrews L C, Desyatnikov A S, Li-Gang Wang, Nye J F, Soskin M S, Wei-Wei Zheng   +5 more
core   +1 more source

Reduction of Oxide Inclusions During the High‐Frequency Welding of Steel via a Nonthermal Ar/H2 Plasma Jet

Advanced Engineering Materials, EarlyView.
High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin, Lienhard Wegewitz, René Gustus, Henning Wiche, Wolfgang Maus‐Friedrichs   +4 more
wiley   +1 more source

Investigation of turbulence effect on the free space optical link for ground-to-train communications [PDF]

, 2011
There is a growing demand for high mobility and ultrafast internet/data services which drives the motivation for free space optical (FSO) communications for high speed trains.
Ghassemlooy, Zabih, Le Minh, Hoa, Livingstone, Bryan, Paudel, Rupak, Rajbhandari, Sujan   +4 more
core  

Handbook of Establishing and Maintaining Oxygen‐Free Atmospheres

Advanced Engineering Materials, EarlyView.
This study presents a practical framework for creating oxygen‐free atmospheres at ambient pressure using silane‐doped inert gases. The results show that ultra‐low oxygen levels and strongly reduced water content can be achieved through controlled silane dosing, drying systems, and sensor monitoring.
Sascha Jan Zimmermann, René Gustus, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +3 more
wiley   +1 more source

Study of the atmospheric turbulence in free space optical communications [PDF]

, 2009
-In this paper the effect of atmospheric turbulence on free space optical (FSO) communications is investigated experimentally by designing a turbulence simulation chamber.
Fan, Z., Ghassemlooy, Zabih, Ijaz, Muhammad, Popoola, Wasiu Oyewole, Wu, Shan   +4 more
core   +1 more source

Meso-Nh simulations of the atmospheric flow above the Internal Antarctic Plateau

, 2010
Mesoscale model such as Meso-Nh have proven to be highly reliable in reproducing 3D maps of optical turbulence (see Refs. 1, 2, 3, 4) above mid-latitude astronomical sites.
Hagelin, Susanna, Lascaux, Franck, Masciadri, Elena, Stoesz, Jeffrey A.   +3 more
core   +1 more source

Adaptive Subcarrier PSK Intensity Modulation in Free Space Optical Systems [PDF]

, 2010
We propose an adaptive transmission technique for free space optical (FSO) systems, operating in atmospheric turbulence and employing subcarrier phase shift keying (S-PSK) intensity modulation.
Athanasios S. Lioumpas, George K. Karagiannidis, Nestor D. Chatzidiamantis, Senior Member, Senior Member, Shlomi Arnon, Student Member   +6 more
core   +1 more source

Bioprinting Organs—Science or Fiction?—A Review From Students to Students

Advanced Healthcare Materials, EarlyView.
Bioprinting artificial organs has the potential to revolutionize the medical field. This is a comprehensive review of the bioprinting workflow delving into the latest advancements in bioinks, materials and bioprinting techniques, exploring the critical stages of tissue maturation and functionality.
Nicoletta Murenu, Camilla Mussoni, Mateo S. Andrade Mier, Paula Buettner, Nathaly Chicaiza‐Cabezas, Yi‐Yu Robin Dai, Jessica Faber, Maren Fiedler, Zan Lamberger, Xuen Jen Ng, Vanessa Moessler, Anna Rederer, Jonas Roeder, Sabrina Stecher, Katinka Theis, Jeanette Weigelt, Silvia Budday, Gregor Lang, Natascha Schaefer   +18 more
wiley   +1 more source

Phase Corrections With Adaptive Optics and Gerchberg-Saxton Iteration: A Comparison

IEEE Access, 2019
Free space optical communications technique is the promising alternative for the access/fronthual networks to relieve the traffic congestion. The turbulence in the free space channel, however, could cause the phase distortions in optical signals, thus ...
Ming Li
doaj   +1 more source