Results 91 to 100 of about 139,735 (330)

Channel Characterization and Modeling for Optical Wireless Body-Area Networks

IEEE Open Journal of the Communications Society, 2020
We address channel characterization and modeling for medical wireless body-area networks (WBANs) based on the optical wireless technology. We focus on the intra-WBAN communication links, i.e., between a set of medical sensors and a coordination node ...
Oussama Haddad, Mohammad-Ali Khalighi, Stanislav Zvanovec, Mouloud Adel   +3 more
doaj   +1 more source

Advances in Magnesium‐Based Thermoelectrics: A Critical Review

Advanced Materials, EarlyView.
Magnesium‐based thermoelectric materials have emerged as promising candidates for low‐to‐mid‐temperature energy conversion due to their abundance, low cost, and competitive performance. This review summarizes recent advances in Mg3X2, MgAgSb, and Mg2X systems, covering transport mechanisms, fabrication strategies, stability challenges, and device ...
Li‐Min Zhang, Li Zhang, Nan‐Hai Li, Yan‐Ling Yang, Xiao‐Lei Shi, Zhi‐Gang Chen   +5 more
wiley   +1 more source

Human body effect on static UWB WBAN off-body radio channels [PDF]

, 2020
This paper presents the effect of a human body on ultra-wideband off-body wireless body area network radio channels. The work is based on static measurements in an anechoic chamber by using a vector network analyzer in a 2—8 GHz frequency band.
Matti Hämäläinen, Kumpuniemi, Timo, Kumpuniemi, T. (Timo), Hämäläinen, M. (Matti), Juha-Pekka Mäkelä, Kamya Yekeh Yazdandoost, Mäkelä, Juha-Pekka, Yazdandoost, K. Y. (Kamya Yekeh), Timo Kumpuniemi, Iinatti, J. (Jari), Jari Iinatti, Mäkelä, J.-P. (Juha-Pekka), Iinatti, Jari, Hämäläinen, Matti, Yazdandoost, Kamya Yekeh   +14 more
core   +1 more source

Adaptive Medium Access Control Protocol for Wireless Body Area Networks

International Journal of Distributed Sensor Networks, 2014
Wireless Body Area Networks (WBANs) are widely used for applications such as modern health-care systems, where wireless sensors (nodes) monitor the parameter(s) of interest.
N. Javaid, A. Ahmad, A. Rahim, Z. A. Khan, M. Ishfaq, U. Qasim   +5 more
doaj   +1 more source

Secure Publish-Subscribe Protocols for Heterogeneous Medical Wireless Body Area Networks

Sensors, 2014
Security and privacy issues in medical wireless body area networks (WBANs) constitute a major unsolved concern because of the challenges posed by the scarcity of resources in WBAN devices and the usability restrictions imposed by the healthcare domain ...
Pablo Picazo-Sanchez, Juan E. Tapiador, Pedro Peris-Lopez, Guillermo Suarez-Tangil   +3 more
doaj   +1 more source

ON-OFF Body Ultra-Wideband (UWB) Antenna for Wireless Body Area Networks (WBAN): A Review

IEEE Access, 2020
Ultra-wideband (UWB) technology can offer broad capacity, short-range communications at a relatively low level of energy usage, which is very desirable for wireless body area networks (WBANs).
S. Mahmood, A. J. Ishak, A. Ismail, A. C. Soh, Z. Zakaria, Sameer Alani   +5 more
semanticscholar   +1 more source

Weaving Intelligence: Thermally Drawn Multimaterial Fibers Toward AI‐Enabled Smart Textiles

Advanced Materials, EarlyView.
Thermally drawn multimaterial fibers are rapidly advancing as intelligent structural units for next‐generation smart textiles. Integrating multimaterial architectures with neuromorphic and spiking‐neural‐network principles enables fabrics that can sense, compute, and adapt autonomously.
Vuong Dinh Trung, Jiaxiang Yi, Hieu Nguyen‐Duc, Tien Nu Hoang Lo, Weili Zhao, Chaoqun Dong, Fabien Sorin, Baris Caglar, Lei Wei, Tung Nguyen‐Dang   +9 more
wiley   +1 more source

A Hybrid Chaotic Encryption Scheme for Wireless Body Area Networks

IEEE Access, 2020
Wireless body area network is a low-power and high-security wireless communication protocol specially used in the medical environment. It requires a highly secure encryption algorithm to ensure that information related to a patient's vital signs cannot ...
Shengwen Fan, Kai Li, Ying Zhang, Honghao Tan, Qiang Fang, Kaining Han, Junchao Wang   +6 more
doaj   +1 more source

Soft, Degradable, and Magnetic Microcarriers for Encapsulation and Guided Transport of Drugs and 3D Spheroids

Advanced Materials, EarlyView.
This work presents soft, degradable hydrogel microcarriers that combine magnetic responsiveness with the ability to host multiple therapeutic and cellular components. Produced by droplet microfluidics, the carriers maintain structural integrity during manipulation, permit controlled breakdown under physiological conditions, and enable guided motion for
Xuan Peng, Lulu Song, Daryna Mruga, Veronika Bakhmat, Sergei Dzyadevych, Lin Guo, Shahrukh Shakeel, Rico Illing, Olha Bezsmertna, Xiaotao Wang, Nicholas R. Posselli, Sarthak Misra, Sandra Hauser, Jens Pietzsch, Klaus Kopka, Denys Makarov, Željko Janićijević, Xinne Zhao, Larysa Baraban   +18 more
wiley   +1 more source

Body surface backed flexible antennas and 3D Si-level integrated wireless sensor nodes for 17 GHz wireless body area networks

, 2022
Wireless sensor nodes placed on the body should for natural reasons be small and inconspicuous. A 17 GHz radio gives the highest data throughput per Joule, and enables significant size reduction compared to commonly used lower frequencies.
Rydberg, A., Cheng, S., Fritzsch, T., Sanduleanu, M., Hallbjörner, P., Raedt, W. de, Hjort, K., Doremalen, R. van, Engen, P. van   +8 more
core   +1 more source