Results 141 to 150 of about 42,393 (288)

Resonant Domain Wall Dynamics in a Three‐Dimensional Magnetic Nano Double Helix

Advanced Materials, EarlyView.
3D magnetic nanostructures promise exciting possibilities for magnetization dynamics. However, experimental realizations remain scarce. In nanoprinted cobalt double helices, time‐resolved X‐ray microscopy reveals harmonic domain wall dynamics. Simulations identify the mode and additional higher‐frequency resonances, revealing a rich dynamic landscape ...
Pamela Morales‐Fernández, Iason Konstantinos‐Douveas, Claas Abert, Elina Zhakina, Sandra Ruiz‐Gómez, Claudia Fernández‐González, Luke Alexander Turnbull, Sebastian Wintz, Markus König, Simone Finizio, Markus Weigand, Naëmi Leo, Dieter Suess, Aurelio Hierro‐Rodríguez, Amalio Fernández‐Pacheco, Claire Donnelly   +15 more
wiley   +1 more source

Polygonal generalized perfect spatiotemporal optical vortices

Opto-Electronic Science
Recently, perfect spatiotemporal optical vortices (PSTOVs) have attracted significant attention due to their topological-charge-independent radius and their ability to carry transverse orbital angular momentum.
Shuoshuo Zhang, Zhangyu Zhou, Qianyi Wei, Zhongsheng Man, Changjun Min, Wending Zhang, Yuquan Zhang, Ting Mei, Xiaocong Yuan   +8 more
doaj   +1 more source

Fractional spatiotemporal optical vortices

Spatiotemporal optical vortices (STOVs) with spiral phase in the space-time domain, which carry intrinsic transverse orbital angular momentum (OAM), introduce a new degree of freedom to light beams and exhibit unique properties. While integer and fractional spatial vortices have been extensively studied and widely applied, and research on integer STOVs
Huang, Shunlin, Wang, Peng, Xu, Yilin, Liu, Jun, Li, Ruxin   +4 more
openaire   +2 more sources

Surface Passivation of HgTe Nanocrystals Enabling EG/2 Open‐Circuit Voltage and Their Coupling to Dielectric Cavity for Narrow Detection

Advanced Materials, EarlyView.
This article explores how the integration of a thin shell, combined with optimized surface chemistry, enables the design of photodiodes based on short‐wave infrared HgTe nanocrystals. These photodiodes achieve an open‐circuit voltage greater than half the optical bandgap, which drastically reduces dark current. The article also explores the integration
Albin Colle, Clement Gureghian, Dario Mastrippolito, Mariarosa Cavallo, Jiho Roh, Marco Paye, Tommaso Gemo, Diogo Almeida, Adrien Khalili, Yoann Prado, Xavier Lafosse, Sandrine Ithurria, Mathieu G. Silly, Pavel Dudin, James K. Utterback, José Avila, Debora Pierucci, Emmanuel Lhuillier   +17 more
wiley   +1 more source

Two-dimensional Talbot effect of the optical vortices and their spatial evolution. [PDF]

Sci Rep, 2020
Ikonnikov DA, Myslivets SA, Volochaev MN, Arkhipkin VG, Vyunishev AM.   +4 more
europepmc   +1 more source

Decoding THz‐Driven Dynamic Fingerprints of Ferroelectric Nanotwin Networks

Advanced Materials, EarlyView.
ABSTRACT Ultrafast polarization dynamics in ferroelectrics are of considerable interest for high‐speed tunable dielectrics and electro‐optics. Extended domain wall networks formed in ferroelectric twin nanodomains can support collective dynamics in the terahertz regime but require techniques that track polarization and strain evolution driven by ...
Xiaojiang Li, Aiden Ross, Vladimir A. Stoica, Sujit Das, Sankalpa Hazra, Huaiyu (Hugo) Wang, Hari Padma, Matthias C. Hoffmann, Patrick Kramer, Sanghoon Song, Silke Nelson, Takahiro Sato, Diling Zhu, Ramamoorthy Ramesh, Lane W. Martin, Yue Cao, John W. Freeland, Aaron M. Lindenberg, Haidan Wen, Long‐Qing Chen, Venkatraman Gopalan   +20 more
wiley   +1 more source

Zeroth- and first-order long range non-diffracting Gauss-Bessel beams generated by annihilating multiple-charged optical vortices. [PDF]

Sci Rep, 2020
Stoyanov L, Zhekova M, Stefanov A, Stefanov I, Paulus GG, Dreischuh A.   +5 more
europepmc   +1 more source

Nitric Oxide‐Generating Poly (allylamine hydrochloride) Coating on Biomedical Titanium Implant

Advanced Materials Interfaces, EarlyView.
We report a metal‐free, nitric oxide (NO)‐generating coating in which poly(allylamine hydrochloride) (PAH) is covalently immobilized onto titanium. The coating catalyzes NO generation from the endogenous S‐nitrosothiol GSNO, retains activity after multiple reuse cycles and pH exposures, and maintains endothelial cell viability while modulating ...
Siti Nur Asyura Adzlan, Kang Lin, Shu Geng, Qingqing Fan, Franco Centurion, Zifei Han, Federico Mazur, Rona Chandrawati   +7 more
wiley   +1 more source

Imaging Applications Optical Vortices

Imaging and Applied Optics 2016, 2016
Advancements and reviews of imaging and instrumentation applications of optical vortices will be described. Applications include astronomy (coronagraphy for exoplanet imaging), radiation protection (PSF engineering for laser suppression), scatterometry (complete angular spectrum measurements for particle sizing), and methods of determining the degree ...
openaire   +2 more sources

Elastomers Combining Damping Efficiency With Rapid Recovery

Advanced Materials Technologies, EarlyView.
Double network granular elastomers (DNGEs) combine high energy dissipation under both cyclic loading and high impact with rapid shape recovery. 3D printing enables the production of complex, customizable structures with tailored performance. Recyclable DNGEs retain their properties over multiple recycling cycles.
Eva Baur, Alain Molleyres, Esther Amstad
wiley   +1 more source