Results 91 to 100 of about 1,358,362 (273)

Generation and Enhancement of Persistent Nanoscale Magnetization in All‐Dielectric Metasurfaces by Optically Injected and Localized Free Carriers

Advanced Science, EarlyView.
Infrared metasurface‐guided waves (IR‐MGW) scattered by a time interface (TI) induced by rapid, localized free‐carrier generation can be efficiently rectified to generate strong, persistent magnetic fields. We develop a rigorous, theoretical model to study a time‐varying, dispersive medium and uncover the redistribution of the initial energy of the IR ...
Shivaksh Rawat, Samyobrata Mukherjee, Gennady Shvets   +2 more
wiley   +1 more source

Generation of pseudo-radially-polarized beams in a diode pumped solid-state laser

A simple technique for directly generating pseudo-radially-polarised or donut-shaped beams in a diode-pumped solid-state laser is presented.
Daniel, J.M.O., Clarkson, W.A.
core   +1 more source

From Displacement to Angle: Diamond‐Based 3D Rotation Sensing for High‐Precision Cellular Force Measurement

Advanced Science, EarlyView.
Cellular forces are traditionally inferred from displacement measurements, which lack rotational information and are constrained by linear model assumptions. This work replaces displacement with rotational angle for the fundamental mechanical readout.
Linjie Ma, Bicong Wang, Tai Nam Yip, Jiahua Zhang, Yicheng Wang, Luyao Zhang, Yong Hou, Yuan Lin, Zhiqin Chu   +8 more
wiley   +1 more source

Heat‐Suppressing Projection Two‐Photon Lithography Enables High‐Throughput Sub‐Micrometer Manufacturing of Biopolymer Hydrogels for Tissue Engineering

Advanced Science, EarlyView.
The iLEAP technique integrates high‐throughput two‐photon lithography with extrusion printing, bridging sub‐micrometer precision and macroscopic scaffold fabrication. By employing a low‐exothermic photoinitiator, it mitigates thermal damage to biopolymers and preserves bioactivity.
Qifeng Guan, Yanzhe Fu, Xiangyu Xu, Naitao Li, Sen Hou, Kai Wang, Yufan Wang, Jiakun Li, Ping Li, Jiebo Li, Lizhen Wang, Yubo Fan   +11 more
wiley   +1 more source

Control of light emission of quantum emitters coupled to silicon nanoantenna using cylindrical vector beams. [PDF]

Light Sci Appl, 2023
Montagnac M, Brûlé Y, Cuche A, Poumirol JM, Weber SJ, Müller J, Larrieu G, Larrey V, Fournel F, Boisron O, Masenelli B, Colas des Francs G, Agez G, Paillard V.   +13 more
europepmc   +1 more source

Giant Magnetic Purcell Effect Induced by High‐Order Mie Resonances

Advanced Science, EarlyView.
High‐order Mie resonances in dielectric spheres selectively amplify magnetic dipole emission from Eu3+ emitters, producing a giant magnetic Purcell effect. Localized emitters can efficiently access high‐order resonant modes, and the low‐loss TiO2 platform enables direct far‐field observation of the enhanced emission.
Haonan Shi, Ningning Song, Anjun Huang, Zhengwen Yang, Jingbo Sun, Yongzheng Wen, Ji Zhou   +6 more
wiley   +1 more source

Tight focusing field of cylindrical vector beams based on cascaded low-refractive index metamaterials. [PDF]

Nanophotonics, 2023
Ke L, Li C, Zhang S, Fang B, Tang Y, Hong Z, Jing X.   +6 more
europepmc   +1 more source

Performance Estimation and Ex Vivo Validation of Untethered Magnetic Robots in Soft Tissue

Advanced Science, EarlyView.
This study presents an empirical model that quantitatively predicts the step‐out frequency of screw‐type untethered magnetic robots (UMRs) in soft viscoelastic environments, including ex vivo brain tissue. By integrating key parameters into a dimensionless framework, the model enables estimation of robot performance across a range of biological ...
Leendert‐Jan W. Ligtenberg, Thijs J. van der Burg, Stijn Y. Kolkman, Santiago Saavedra Castano, David Fernandez Rivas, Anke Klingner, Roger M. L. M. Lomme, Lucas S. Joziasse, Dorothee Wasserberg, H. Remco Liefers, Doron Ben Ami, Udi Sadeh, Oded Shoseyov, Giulio Dagnino, Pascal Jonkheijm, Jurgen J. Fütterer, Stefano Stramigioli, J. Frank W. Nijsen, Michiel C. Warlé, Islam S. M. Khalil   +19 more
wiley   +1 more source

All-Fiber Laser With Intracavity Acousto-Optic Dynamic Mode Converter for Efficient Generation of Radially Polarized Cylindrical Vector Beams

IEEE Photonics Journal, 2017
We report an all-fiber laser that emits a radially polarized cylindrical vector beam (CVB) at 1 μm based on an intracavity acousto-optic mode converter.
Leticia Carrion-Higueras, Erica P. Alcusa-Saez, Antonio Diez, Miguel V. Andres   +3 more
doaj   +1 more source

Orbital angular momentum: origins, behavior and applications [PDF]

, 2011
As they travel through space, some light beams rotate. Such light beams have angular momentum. There are two particularly important ways in which a light beam can rotate: if every polarization vector rotates, the light has spin; if the phase structure ...
Padgett, M.J., Yao, Alison, Padgett, Miles, Alison M. Yao, Miles J. Padgett, Yao, A.M.   +5 more
core   +1 more source