Results 81 to 90 of about 2,167 (241)

From hydrogels to eutectogels: Emerging platforms for stretchable electronics

FlexMat, EarlyView.
The transition of wearable electronics toward long‐term reliability requires materials that resist dehydration without sacrificing tissue‐like softness and ionic conductivity. Eutectogels fulfill these demands by immobilizing deep eutectic solvents within tailored polymer networks.
Chang Zhou, Jiancheng Dong, Jiayu Hou, Shiyin Lin, Xingyu Liu, Hao Qiu, Mengting Zheng, Yuduo Zhang, Haijun Zhu, Kangjia Geng, Yidong Peng, Haoran Liu, Xu Zhang, Yunpeng Huang, Tianxi Liu   +14 more
wiley   +1 more source

Body‐integrated photonic biosensors: Illuminating the path to active healthcare

FlexMat, EarlyView.
Body‐integrated photonic biosensors are promising tools for active healthcare. These optical devices can be worn, implanted, or swallowed to monitor health signals continuously. This review introduces key sensing modalities, including fluorescence, colorimetry, SPR, LSPR, SERS, and light‐modulating materials.
Jiayue Gu, Xingming Wen, Qihang Yan, Yining Zhao, Linghao Yuan, Siyuan Chen, Yue Ma, Zhengyue Fang, Dong Lei, Yuxin Liu, Ze Xiong   +10 more
wiley   +1 more source

SIMO detection schemes for underwater optical wireless communication under turbulence

, 2015
In underwater optical wireless communication (UOWC), a channel is characterized by abundant scattering/absorption effects and optical turbulence. Most previous studies on UOWC have been limited to scattering/absorption effects.
Xu ZY(徐正元), Yang, Liuqing, Liu, Weihao   +2 more
core  

Underwater Coherent Optical Wireless Communications with Electronic Beam Steering and Turbulence Compensation Using Adaptive Optics and Aperture Averaging [PDF]

A novel approach to underwater optical wireless coherent communications using liquid crystal spatial light modulators (LC-SLMs) and an aperture averaging lens, in combination with optical phased-array (OPA) antennas, is presented. A comprehensive channel
Ali Derakhshandeh, Stephan Pachnicke, Hoeher, Peter A., Peter A. Hoeher, Derakhshandeh, Ali, Pachnicke, Stephan   +5 more
core   +1 more source

MIMO techniques for robust underwater optical wireless communications by mitigating oceanic turbulence and transceiver misalignment

Scientific African
By using Binary Phase-Shift Keying (BPSK) modulation with heterodyne detection, we present in this paper an analytical approach to evaluate the effect of oceanic turbulence and pointing errors effects on an Underwater Wireless Optical Communication (UWOC)
Abdeslam Fakchich, M. Bouhadda, A. Feraoun, E.B. Tazi, R. Alami, F.M. Abbou, L. Bouanane, F. Abdi   +7 more
doaj   +1 more source

Underwater Wireless Sensor Networks: A Survey on Enabling Technologies, Localization Protocols, and Internet of Underwater Things

IEEE Access, 2019
Underwater communication remains a challenging technology via communication cables and the cost of underwater sensor network (UWSN) deployment is still very high.
Mohammed Jouhari, Khalil Ibrahimi, Hamidou Tembine, Jalel Ben-Othman   +3 more
doaj   +1 more source

High Efficiency NIR Luminescence Beyond 900 nm Through Promoting Cr3+ Pair Generation in Sr3Zr2O7 Layered Perovskite

Laser &Photonics Reviews, EarlyView.
A Cr3+/La3+ codoped Sr3Zr2O7 NIR phosphor showing luminescence at ∼960 nm with high IQE/EQE (92.4%/57.5%) and good thermal stability was developed. La3+ stabilizes Cr3+ and induces Cr3+ pairs, enabling efficient blue‐to‐NIR conversion for underwater wireless optical communication.
Zhiyuan Pan, Sihan Feng, Yun Wang, Xuejiao Wang, Qi Zhu, Ji‐Guang Li   +5 more
wiley   +1 more source

Non-line-of-sight scattering channel modeling for underwater optical wireless communication

, 2015
The characteristics of the non-line-of-sight (NLOS) scattering channel for underwater optical wireless communication in the optical transmission window (wavelength of 400nm-600nm) are studied.
Xu ZY(徐正元), Yu JC(俞建成), Liu, Weihao, Zou, Difan   +3 more
core  

Photon-Counting Underwater Optical Wireless Communication for Reliable Video Transmission Using Joint Source-Channel Coding Based on Distributed Compressive Sensing

Sensors, 2019
To achieve long-distance underwater optical wireless communication, a single photon detector with single photon limit sensitivity is used to detect the optical signal at the receiver.
Zhu Hong, Qiurong Yan, Zihang Li, Ting Zhan, Yuhao Wang   +4 more
doaj   +1 more source

Virtual Elastic Tether: A New Approach for Multi‐Agent Navigation in Confined Aquatic Environments

Journal of Field Robotics, EarlyView.
ABSTRACT Underwater navigation is a challenging area in the field of mobile robotics due to inherent constraints in self‐localization and communication in underwater environments. Some of these challenges can be mitigated by using collaborative multi‐agent teams.
Kanzhong Yao, Xueliang Cheng, Keir Groves, Barry Lennox, Ognjen Marjanovic, Simon Watson   +5 more
wiley   +1 more source