Results 81 to 90 of about 190,980 (288)

Ultrafast entanglement switching and singlet–triplet transitions control via structured terahertz pulses

New Journal of Physics, 2022
Terahertz (THz) vector beams with spatially textured polarization are proposed to steer the spin and spatial distributions of two interacting electrons in a quantum dot.
Jonas Wätzel, Jamal Berakdar, E Ya Sherman   +2 more
doaj   +1 more source

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

Advanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner, Ruben Maile, Murat Cuvalli, Andreas Wolf, Ayisha Komal, Robert Oestreich, Christoph Janiak, Karl Mandel, Alexander Knebel, Klaus Müller‐Buschbaum   +9 more
wiley   +1 more source

Integral transformation solution of free-space cylindrical vector beams and prediction of modified-Bessel-Gaussian vector beams

, 2007
A unified description of the free-space cylindrical vector beams is presented, which is an integral transformation solution to the vector Helmholtz equation and the transversality condition.
Ashkin, Bandres, Biss, Chun-Fang Li, Davis, Dorn, Enderlein, Greene, Guo, Hall, Jordan, Lax, Li, Martínez-Herrero, Ruschin, Seshadri, Seshadri, Tovar, Tovar, Youngworth, Zhan   +20 more
core   +1 more source

An All‐Optical Driven Bio‐Photovoltaic Interface for Active Control of Live Cells

Advanced Functional Materials, EarlyView.
Bio‐photovoltaic Interface (BIO‐PV‐I) for live cell manipulation is presented. BIO‐PV‐I can be activated non‐invasively and remotely to control the spatial motility, adhesion, and morphology of cells adhering to it. BIO‐PV‐I uses a patterned light‐induced electric potential in iron‐doped lithium niobate crystals whose light‐driven and reversible nature,
Lisa Miccio, Martina Mugnano, Valentina Marchesano, Alejandro Calabuig, Zhe Wang, Gennaro Giordano, Francesca Borrelli, Simonetta Grilli, Pietro Ferraro   +8 more
wiley   +1 more source

Circular‐Polarization‐Sensitive Organic Photodetectors with a Chiral Nanopatterned Electrode Inverse‐Designed by Genetic Algorithm

Advanced Functional Materials, EarlyView.
A chiral photodetector capable of selectively distinguishing left‐ and right‐handed circularly polarized light is experimentally demonstrated. The device, which features a nanopatterned electrode inverse‐designed by a genetic algorithm within a metal–dielectric–metal nanocavity that incorporates a vacuum‐deposited small‐molecule multilayer, exhibits ...
Kyung Ryoul Park, Jewoong Lee, In‐Suk Choi, Changsoon Kim   +3 more
wiley   +1 more source

Second harmonic of higher-order Poincaré sphere beam with two orthogonal 5%MgO:PPLN crystals

APL Photonics
In this work, the second harmonic (SH) of higher-order Poincaré sphere (HOPS) beam was introduced and demonstrated with two orthogonal 5%MgO:PPLN crystals.
Qinan Jiang, Minglin Zhao, Yuanxiang Wang, Shuolin Wang, Jiantai Dou, Jun Liu, Bo Li, Youyou Hu   +7 more
doaj   +1 more source

Dynamic Excitation of Surface Plasmon Polaritons with Vector Laguerre–Gaussian Beams

Optics
We investigate the dynamic excitation of surface plasmon polaritons (SPPs) using vector Laguerre–Gauss (LG) beams, which offer unique properties for manipulating the polarization and spatial distribution of light.
Aldo Peña-Ramírez, Tingting Zhai, Rafael Salas-Montiel, Víctor Ruiz-Cortés   +3 more
doaj   +1 more source

Generating vector beams by modulating and superimposing multiple polarization modes within a helium-neon resonant cavity

AIP Advances, 2023
In recent years, vector beams, which have greater control freedom due to their non-uniform spatial polarization distribution, have received extensive attention from scholars.
Chencheng Wang, Qingli Zhang, Guanxue Wang, Xiangmei Dong, Yi Liu, Xiaoyu Weng, Xiumin Gao   +6 more
doaj   +1 more source

Self-trapped bidirectional waveguides in a saturable photorefractive medium

, 2003
We introduce a time-dependent model for the generation of joint solitary waveguides by counter-propagating light beams in a photorefractive crystal.
A. Desyatnikov, A. Strinić, A.L. Gaeta, C. Denz, D.J. Gauthier, E.A. Ostrovskaya, F.T. Arecchi, M. Belić, M. Haelterman, M. Saffman, M.R. Belić, M.R. Belić, O. Cohen, O. Cohen, O. Sandfuchs, Ph. Jander, T. Honda, T. Honda, Y. Silberberg   +18 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