Results 61 to 70 of about 2,952 (284)

A Programmable Multi‑Modal Information Encryption System Based on the Dynamic Wetting Behavior of Liquid Metal

Advanced Science, EarlyView.
This work presents a programmable multimodal information encryption device that harnesses the dynamic wetting behavior of liquid metal to achieve secure, reconfigurable, and high‐precision encryption and decryption of diverse data types, including text and images.
Xuedong Qiang, Min Mao, Yihao Wang, Nan Li, Mengyu Jiang, Chenkun Sun, Bangdeng Du, Jifei Ye, Linyan Wang, Fei Zhan, Lei Wang   +10 more
wiley   +1 more source

Error correction of a phase-only computer-generated hologram for an aspheric surface [PDF]

Journal of the European Optical Society-Rapid Publications, 2014
When applying phase-only computer-generated hologram (CGH) as a standard model of optical measurement in computer-generated holography for aspheric surface testing, it has the advantage of simplifying optical path configuration and improving the ...
Zhang H., Yan Y., Zhou H., Qiao Y. J., Si J., Wang D.   +5 more
doaj   +1 more source

Super‐Resolution and High‐Data‐Density Acoustic Meta‐Hologram via Amplitude and Phase Coupling

Advanced Science, EarlyView.
A super‐resolution acoustic meta‐hologram utilizes amplitude‐phase coupling under energy conservation constraints to overcome the traditional diffraction limit. This conceptually advanced approach achieves high‐fidelity acoustic field reconstruction and dense information transmission, unlocking new potentials for high‐resolution acoustic imaging and ...
Xiao Guo, Xinzong Wang, Guoshen Tang, Haohan Zeng, Siqi Fan, Xinghao Hu, Youyu Mo, Zhenyu He, Tingting Li, Hui Xu, Jiao Shen, Haiyan Fan, Xiaoxiang Gao, Yifan Zhu, Hui Zhang, Badreddine Assouar   +15 more
wiley   +1 more source

Conformal Reconfigurable Intelligent Surfaces: A Cylindrical Geometry Perspective

Advanced Electronic Materials, EarlyView.
Cylindrical reconfigurable intelligent surfaces are explored for low‐complexity beam steering using one‐bit meta‐atoms. A multi‐level modeling approach, including optimization‐based synthesis, demonstrates that even minimal hardware can support directive scattering.
Filippo Pepe, Ivan Iudice, Giuseppe Castaldi, Marco Di Renzo, Vincenzo Galdi   +4 more
wiley   +1 more source

New fully functioning digital hologram recording system and its applications [PDF]

, 2010
We propose a low-cost optical system that is able to simply generate computer-generated holograms and rainbow type and truecolor Lippmann type holograms.
JOSE JAVIER BAEZ ROJAS, MIGUEL ALCARAZ RIVERA, MARIA LUISA CRUZ LOPEZ   +2 more
core  

Optical damage as a computer generated hologram recording mechanism

, 2015
In this paper we report optical damage as a bulk glass recording process. We used a 10Hz, 35picoseconds, 5mJ polarized Nd:YAG pulse laser focused using a 25mm lens to create 50μm average optical damage spots to record a computer generated hologram ...
Olivares-Pérez, Arturo, Treviño-Palacios, Carlos Gerardo, Zapata-Nava, Oscar Javier   +2 more
core   +1 more source

High-space bandwidth product computer-generated holography using volume holography [PDF]

, 1993
We suggest a method for coding high resolution computer-generated volume holograms. It involves splitting the computer-generated hologram into multiple holograms, each individually recorded as a volume hologram utilizing the maximal resolution available ...
Rosen, Joseph, Joseph L. Rosen, Jacob Barhen, Mordechai Segev, Amnon Yariv, Yariv, Amnon, Segev, Mordechai, Barhen, Jacob   +7 more
core   +1 more source

Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems

Advanced Electronic Materials, EarlyView.
Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang, Weipeng Wang, Xuan Cong, Shiyu Wang, Gao Li, Sen Gong, Lin Huang, Hongxin Zeng, Yaxin Zhang, Ziqiang Yang   +9 more
wiley   +1 more source

Novel Non‐Cytotoxic Acylphosphinates and Acylphosphine Oxides Photoinitiators

Angewandte Chemie, EarlyView.
Novel acylphosphine oxide (APO) and acylphosphinate photoinitiators based on DPO and DOPO were designed to investigate structure–property relationships including photochemical performance, polymerization efficiency and cytotoxicity. While DPO derivatives showed excellent reactivity, DOPO‐based systems also displayed good efficiency and significantly ...
Jiansong Yin, Yijun Zhang, Bernadette Graff, Céline Dietlin, Michael Schmitt, Fabrice Morlet‐Savary, Tatiana Petithory, Laurent Pieuchot, Jing Zhang, Xiaotong Peng, Yangyang Xu, Jean‐Michel Becht, Pu Xiao, Jacques Lalevée   +13 more
wiley   +2 more sources

Generating Multi‐Depth 3D Holograms Using a Fully Convolutional Neural Network

Advanced Science
Efficiently generating 3D holograms is one of the most challenging research topics in the field of holography. This work introduces a method for generating multi‐depth phase‐only holograms using a fully convolutional neural network (FCN).
Xingpeng Yan, Xinlei Liu, Jiaqi Li, Yanan Zhang, Hebin Chang, Tao Jing, Hairong Hu, Qiang Qu, Xi Wang, Xiaoyu Jiang   +9 more
doaj   +1 more source