Results 71 to 80 of about 21,299 (341)

MAC Protocol in Wireless Body Area Network for Mobile Health: A Survey and an Architecture Design

International Journal of Distributed Sensor Networks, 2015
Wireless body area networks (WBANs) have become a leading solution in mobile health (mHealth). Typically, a WBAN consists of in-body or around-body sensor nodes for collecting data of physiological feature.
Xin Qi, Kun Wang, AnPeng Huang, Haifeng Hu, Guangjie Han   +4 more
doaj   +1 more source

Deep Learning Inverse Design of Phase‐Change Reconfigurable Terahertz Metadevices for Multidimensional Secure Communication

Advanced Materials, EarlyView.
A deep learning inverse‐design framework is established to create versatile reconfigurable terahertz metadevices. By synergizing deep learning with phase‐change materials, this approach enables on‐demand customization of multidimensional electromagnetic responses.
Yisheng Dong, Xieyu Chen, Aarthy Nagarajan, Yi Yang, Zhihao Wang, Rui Yu, Chuang Zheng, Chunmei Ouyang, Xueqian Zhang, Tun Cao, Ranjan Singh, Zhen Tian   +11 more
wiley   +1 more source

Millimeter-wave broadband dual-circularly polarized array antenna loaded with metasurface

Scientific Reports
This paper presents a millimeter-wave broadband dual circularly polarized (DCP) linear array antenna loaded with a linear to circular polarization converting metasurface.
Ting Wu, Zikang Zhang
doaj   +1 more source

Simulation analysis of underwater wireless optical communication based on Monte Carlo method and experimental research in complex hydrological environment

AIP Advances, 2023
This paper aims to address the challenges of short optical communication distances and high Bit Error Rates (BERs) caused by seawater absorption, scattering, and underwater turbulence.
Yanru Ren, Min Zhu, Ke Cui, Longxian Li, Shengao Wang   +4 more
doaj   +1 more source

Intimate Interaction Between Nucleic Acid and Conjugated Polymers in Organic Electrochemical Transistors Enables Ultrasensitive Biomarker Detection

Advanced Materials, EarlyView.
The intimate interaction between negatively charged RNA molecules and conjugated polymers in organic electrochemical transistors (OECTs) in aqueous electrolytes is investigated. It demonstrates that RNA binding reduces the volumetric capacitance of the polymer channel, enabling the development of an ultrasensitive biosensing platform capable of ...
Hong Liu, Naixiang Wang, Anneng Yang, Jiajun Song, Li Li, Iain McCulloch, Helen Ka‐wai Law, Feng Yan   +7 more
wiley   +1 more source

High-capacity dynamic indoor all-optical-wireless communication system backed-up with millimeter-wave radio techniques [PDF]

, 2018
We propose a full-duplex dynamic indoor optical-wireless communication system using a crossed pair of diffraction gratings and photonic-integrated circuits with multicasting capability of 10-Gb/s on-off-keying and >40-Gb/s discrete-multitone data per ...
Mekonnen, Ketemaw Addis, Tangdiongga, Eduward, Tangdiongga, Eduward; id_orcid, Koonen, Ton   +3 more
core   +1 more source

Space‐Time Coding Conformal Metasurfaces for Multifrequency Beam Steering and Shaping

Advanced Materials, EarlyView.
Space‐time coding conformal metasurfaces enable dynamic wave control on curved surfaces by combining programmable spatial patterns with temporal modulation. This study shows that a single conformal aperture can independently manipulate multiple frequency components, achieving multifunctional beam shaping and steering, with implications for ...
Filippo Pepe, Lei Zhang, Yi Ning Zheng, Xiao Qing Chen, Ivan Iudice, Giuseppe Castaldi, Marco Di Renzo, Tie Jun Cui, Vincenzo Galdi   +8 more
wiley   +1 more source

High-capacity symmetric dynamic indoor optical wireless communication equipped with user localization [PDF]

, 2018
We report on a novel all-optical system for ultra-high capacity indoor wireless communication with centralized light sources. Using optical cross-connect and reflective modulator photonic chips, bidirectional dynamic indoor wireless networks equipped ...
Tangdiongga, Eduward, Tangdiongga, E Eduward, Calabretta, N Nicola, Mekonnen, KA Ketemaw, Koonen, AMJ Ton, Tangdiongga, Eduward; id_orcid, Mekonnen, Ketemaw A., Zantvoort, JHC Johan van, van Zantvoort, Johan, Koonen, A.M.J. (Ton), Calabretta, Nicola   +10 more
core   +1 more source

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

Advanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane, Lyn I. Jones, Richard M. Martin, Helen Winter, Faezeh Arab Hassani   +4 more
wiley   +1 more source

Indoor Optical Wireless Channel Characteristics With Distinct Source Radiation Patterns

IEEE Photonics Journal, 2016
In conventional indoor optical wireless communication, the transmitter is usually empirically viewed as a source with a Lambertian radiation pattern.
Jupeng Ding, Chih-Lin I, Zhengyuan Xu
doaj   +1 more source