Results 81 to 90 of about 6,266 (254)

Protocol‐Agnostic Meta Key Distribution for Encrypted Wireless Communications Enabled by Space‐Time‐Coding Metasurface

Advanced Science, EarlyView.
This paper presents a programmable metasurface‐based Meta Key Distribution (MKD) system for secure, protocol‐independent key exchange in indoor wireless settings. By embedding entropy into the wireless channel, it enables lightweight, compatible cryptographic key generation.
Xinyu Li, Long Chen, Guanxiong Shen, Kezhan Zhao, Ze Gu, Qian Ma, Jian Wei You, Tie Jun Cui   +7 more
wiley   +1 more source

Polarization‐Multiplexed Metalens Enables Switchable and Compact Chromatic Confocal Sensing with Dual‐Mode Precision Control

Advanced Science, EarlyView.
This work breaks conventional design paradigms by leveraging a polarization‐multiplexed metasurface to create the first chromatic confocal sensor with dynamically switchable measurement performance, achieving 10‐fold miniaturization (Ø1 mm vs cm‐scale conventional probes).
Zhicheng Zhao, Yuting Jiang, Tao Lai, Wenxiang Peng, Yueqiang Hu, Shanyong Chen   +5 more
wiley   +1 more source

Deep Tissue Wavefront Estimation for Sensorless Aberration Correction

MATEC Web of Conferences, 2015
The multiple light scattering in biological tissues limits the measurement depth for traditional wavefront sensor. The attenuated ballistic light and the background noise caused by the diffuse light give low signal to noise ratio for wavefront ...
Ibrahimovic Emina, Taoa Xiaodong, Reinig Marc, Li Qinggele, Kubby Joel   +4 more
doaj   +1 more source

Widefield wavefront sensor for multidirectional peripheral retinal scanning. [PDF]

Biomed Opt Express, 2023
Pusti D, Degre Kendrick C, Wu Y, Ji Q, Jung HW, Yoon G.   +5 more
europepmc   +1 more source

From Complex Shaping to Mirror Finish: Additive Manufacturing of Aerospace‐grade Cf/SiC Space Optics

Advanced Science, EarlyView.
An integrated additive manufacturing route combines selective laser sintering, engineered interphases, and optimized silicon infiltration to fabricate complex Cf/SiC composites. The approach enables precise shaping, high mechanical performance, and excellent optical reflectivity, offering a scalable solution for advanced aerospace optics with both ...
Buhao Zhang, Li Wang, Xiao Chen, Yuquan Wei, Huisheng Tian, Zhengren Huang, Xuejian Liu, Zhongming Chen, Jie Yin   +8 more
wiley   +1 more source

Expanded Scene Image Preprocessing Method for the Shack–Hartmann Wavefront Sensor [PDF]

, 2023
Bo Chen, Jingjing Jia, Yilin Zhou, Yirui Zhang, Zhaoyi Li   +4 more
openalex   +1 more source

Non‐Uniform Space‐Time‐Coding Modulation for Low‐Complexity Diagnostics of Reconfigurable Intelligent Surfaces

Advanced Electronic Materials, EarlyView.
A diagnostic method for reconfigurable intelligent surfaces (RIS) based on non‐uniform space‐time‐coding modulation is presented. Fault localization is achieved via amplitude‐only spectral measurements, eliminating the need for complex signal processing. A one‐to‐one mapping between harmonic components and RIS elements enables accurate detection.
Xiao Qing Chen, Lei Zhang, Yi Ning Zheng, Bing Bing Zhu, Marco Rossi, Giuseppe Castaldi, Shuo Liu, Vincenzo Galdi, Tie Jun Cui   +8 more
wiley   +1 more source

Overview of focal plane wavefront sensors to correct for the Low Wind Effect on SUBARU/SCExAO [PDF]

, 2019
Sébastien Vievard, Steven P. Bos, F. Cassaing, A. Ceau, Olivier Guyon, Nemanja Jovanović, Christoph U. Keller, Julien Lozi, Frantz Martinache, Aurélie Montmerle-Bonnefois, Laurent M. Mugnier, Mamadou N’Diaye, Barnaby Norris, Ananya Sahoo, Jean-François Sauvage, Frans Snik, Michael J. Wilby, Alison Wong   +17 more
openalex   +2 more sources

Versatile Standing Wave Generation Between Arbitrarily Oriented Surfaces Using Acoustic Metasurface Deflectors and Retroreflectors

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
A novel method for generating versatile standing wave fields using an acoustic metasurface deflector and retroreflector is introduced. By overcoming traditional constraints of parallel surfaces, the approach enables customizable wave patterns and enhances applications in particle manipulation.
Chadi Ellouzi, Farhood Aghdasi, Ali Zabihi, Amir K. Miri, Chen Shen   +4 more
wiley   +1 more source

Advancing wavefront sensing: meta Shack-Hartmann sensor enhances phase imaging

Light: Science & Applications
A meta-lens array-based Shack-Hartmann wavefront sensor has been developed to break the limits imposed by the size and curvature of traditional micro-lenses, which significantly improves both sampling density and angular resolution of phase measurement ...
Xiaoyuan Liu, Zihan Geng, Mu Ku Chen
doaj   +1 more source