Results 211 to 220 of about 30,811 (272)

Phase Topology Stability of an Optical Vortex via an Electrically Controlled Twist‐Planar Oriented Liquid Crystal Fresnel Lens

Advanced Optical Materials, EarlyView.
A simple and efficient method for determining the stability of optical vortices via Fourier transform using a conventional spherical lens is presented. The theoretical and experimental results demonstrate a practical approach to directly and unambiguously measure the magnitude and sign of the topological charge of a beam without altering an ...
Elena Melnikova, Katsiaryna Pantsialeyeva, Dmitry Gorbach, Alexei Tolstik, Sergei Slussarenko Jr., Alina Karabchevsky   +5 more
wiley   +1 more source

Efficient Sensors Selection for Traffic Flow Monitoring: An Overview of Model-Based Techniques Leveraging Network Observability. [PDF]

Sensors (Basel)
Fabris M, Ceccato R, Zanella A.
europepmc   +1 more source

Cloaking and Antennas: From Theoretical Paradigms to Next‐Generation Intelligent Systems

Advanced Optical Materials, EarlyView.
The inception of electromagnetic cloaking sparked an immediate question: Can antennas be made invisible? Two decades later, this review charts the intertwined progress of major cloaking strategies (from transformation optics to scattering cancellation), metasurface technology, and their application to antennas, revealing how AI‐enabled devices are ...
Helen Guo, Xun Li
wiley   +1 more source

An Intrinsic Characterization of Shannon's and Rényi's Entropy. [PDF]

Entropy (Basel)
Schlather M, Ditscheid C.
europepmc   +1 more source

Dual‐Mode Thermal Indicator for Cold‐Chain Logistics Using Multipiezo Li0.12Na0.88NbO3: Pr3+

Advanced Optical Materials, EarlyView.
Multipiezo Li0.12Na0.88NbO3:Pr3+ phosphor enables dual‐mode optical sensing by integrating fluorescence intensity ratio (FIR)‐based temperature readout and persistent luminescence‐based time tracking. The system achieves a record‐high relative sensitivity of 2.18% K−1 for FIR‐based thermometry in the 103–293 K range and allows for accurate ...
Ke Su, Tomoki Uchiyama, Junhao Wang, Xu‐Guang Zheng, Lefu Mei, Chao‐Nan Xu   +5 more
wiley   +1 more source

Near Linearity of the Macroscopic Hall Current Response in Infinitely Extended Gapped Fermion Systems. [PDF]

Commun Math Phys
Wesle M, Marcelli G, Miyao T, Monaco D, Teufel S.   +4 more
europepmc   +1 more source

Hundreds of Nanocoulomb Electron Acceleration Driven by Multipetawatt Laser in Subcritical Density Plasmas

Advanced Photonics Research, EarlyView.
Electron acceleration using multipetawatt femtosecond lasers and subcritical density plasmas achieves a maximum charge of 245 nC, with an injection rate of up to 100 nC per picosecond. The charge variation with plasma density, initially increasing and then decreasing, arises from the competition between the injection of multiple plasma waves and laser ...
Xi‐Chen Hu, Ming‐Yang Zhu, Yi‐Fei Li, Jie Feng, Guang‐Wei Lu, Yao‐Jun Li, Xu‐Lei Ge, Xiao‐Jun Huang, Wen‐Chao Yan, Li‐Ming Chen   +9 more
wiley   +1 more source

Weak Versus Strong Convergence of a Regularized Newton Dynamic for Maximal Monotone Operators

, 2017
Hédy Attouch, Jean-Bernard Baillon
openalex   +2 more sources

Methodology for Topological Interface Engineering in 2D Photonic Crystals

Advanced Photonics Research, EarlyView.
This article introduces an automated framework for topological photonic crystal design. It features an iterative band connection method for identifying band crossings, a data‐driven approach for band symmetry recognition, and analysis of how topological mode dispersion trades off with photonic band‐gap size.
Ondřej Novák, Gervasi Herranz, Martin Veis   +2 more
wiley   +1 more source

Integration of Soft‐Robotics and Deep Learning to Assess the Coordinated Biosonar Emission and Reception Dynamics in Hipposiderid Bats

Advanced Robotics Research, EarlyView.
Combining a biomimetic soft‐robot with deep‐learning data analytics sheds light on a unique peripheral dynamics seen in the biosonar system of bats: Bats modulate their ultrasonic biosonar signals upon emission as well as reception with variable, yet highly coordinated motion patterns of their noseleaves and pinnae.
Shuxin Zhang, Ruihao Wang, Xiaoyan Yin, Luhui Yang, Rolf Müller   +4 more
wiley   +1 more source