Results 71 to 80 of about 43,576 (316)

Perfect Optical Vortex to Produce Controllable Spot Array

Frontiers in Physics, 2022
The perfect optical vortex has successfully aroused substantial interest from researchers for its central dark hollow caused by spatial phase singularity in recent years.
Xiaotong Jiang, Yuyuan Tian, Meiyu Sun, Zhigang Li, Dengying Zhang, Kunjian Cao, Qiang Shi, Qiang Shi, Linwei Zhu   +8 more
doaj   +1 more source

Correlations in scattered perfect optical vortices [PDF]

, 2021
Patnala Vanitha, Nijil Lal, Anju Rani, Bikash Kumar Das, Gangi Reddy Salla, R P Singh   +5 more
openalex   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

Advanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova, Anna Chiara Bressi, Marina Galliani, Attilio Marino, Gianni Ciofani, Eduardo Machado‐Charry, Hilda Gomez Bernal, Alessandra Francini, Luca Sebastiani, Francesco Greco   +9 more
wiley   +1 more source

Optical vortex ladder via Sisyphus pumping of Pseudospin

Nature Communications
Robust high-order optical vortices are much in demand for applications in optical manipulation, optical communications, quantum entanglement and quantum computing.
Sihong Lei, Shiqi Xia, Daohong Song, Jingjun Xu, Hrvoje Buljan, Zhigang Chen   +5 more
doaj   +1 more source

Interaction between superconducting vortices and Bloch wall in ferrite garnet film

, 2007
Interaction between a Bloch wall in a ferrite-garnet film and a vortex in a superconductor is analyzed in the London approximation. Equilibrium distribution of vortices formed around the Bloch wall is calculated.
A. Hubert, A. Shevchenko, C. Gosse, D. V. Shantsev, J. I. Vestgården, P. E. Goa, T. H. Johansen, V. V. Yurchenko, V. K. Vlasko-Vlasov, V. K. Vlasko-Vlasov, Y. M. Galperin, Å. A. F. Olsen   +11 more
core   +1 more source

Vortex nanoliquid in high-temperature superconductors [PDF]

, 2004
Using a differential magneto-optical technique to visualize flow of transport currents, we reveal a new delocalization line within the reversible vortex liquid region in the presence of a low density of columnar defects. This line separates a homogeneous
Banerjee, S. S., de la Cruz, F., Goldberg, S., Konczykowski, M., Myasoedov, Y., Rappaport, M., Soibel, A., Tamegai, T., van der Beek, C. J., Vinokur, V. M., Zeldov, E.   +10 more
core   +1 more source

Supercontinuum generation with optical vortices

Optics Express, 2010
We employ an optical vortex beam for the generation of femtosecond supercontinuum in a solid state medium. We demonstrate that the continuum generation process is initiated by the filamentation of the vortex, resulting in a spatially divergent continuum. Despite the strong self-focusing and the formation of multiple hot-spots along the vortex ring, the
Dreischuh, Alexander, Maleshkov, Georgi, Samoc, Marec, Kivshar, Yuri, Neshev, Dragomir   +4 more
openaire   +3 more sources

High‐Concentration Mesogen‐Assisted Exfoliation of Low‐Dimensional Nanomaterials for Achieving Ultralow‐Temperature Actuations of Liquid Crystal Elastomers

Advanced Functional Materials, EarlyView.
Most matter is nominally frozen in the polar regions or space, and liquid crystal materials are no exception. Consequently, soft actuators, including liquid crystal elastomers (LCEs), are inoperative under such extreme cold in response to stimuli, as their motion relies on mechanical deformation.
Hyeonseong Kim, Yeon Gyeong Ha, Dong‐Gue Kang, Chinedum O. Osuji, Dae Seok Kim, Changyeon Lee   +5 more
wiley   +1 more source

Spatiotemporal optical vortex reconnections of multi-vortices

Scientific Reports
Vortex reconnections are ubiquitous events found in diverse media. Here we show that vortex reconnections also occur between spatiotemporal vortices in optical waves.
Jordan Adams, Imad Agha, Andy Chong
doaj   +1 more source

Observation of Vortex Pinning in Bose-Einstein Condensates [PDF]

, 2006
We report the observation of vortex pinning in rotating gaseous Bose-Einstein condensates (BEC). The vortices are pinned to columnar pinning sites created by a co-rotating optical lattice superimposed on the rotating BEC.
Daniel E. Sheehy, E. A. Cornell, J. R. Abo-Shaeer, S. Tung, V. Schweikhard   +4 more
core   +4 more sources