Results 61 to 70 of about 23,404 (169)

Ultrasound‐Powered, Battery‐Free Implants via Triboelectric Energy Harvesting

Advanced Materials Technologies, Volume 11, Issue 2, 22 January 2026.
Ultrasound‐driven triboelectric nanogenerators (US‐TENGs) present a promising approach to battery‐free implants by combining body‐safe ultrasound with the material and structural versatility of TENGs. This review categorizes current US‐TENG research into long‐term and transient short‐term applications and discusses key challenges in materials, device ...
Youngwook Chung, Saswat Choudhury, Young‐Jun Kim, In‐Yong Suh, Keren Dai, Sang‐Woo Kim   +5 more
wiley   +1 more source

Investigation of Characteristics of Ultraviolet Light Pulse Weak Signal Communication System Based on Fourth-Order Frequency-Shift Keying Modulation

Photonics
In ultraviolet (UV) communication, On–Off Keying (OOK) is the primary modulation technique. Compared to OOK, frequency modulation offers stronger resistance to path attenuation.
Yingkai Zhao, Axin Du, Yu Jiao, Li Kuang, Jiawen Chen, Ning Sun, Jianguo Liu   +6 more
doaj   +1 more source

Building a Bidirectional Visible Light Communication Link: Challenges and Contributions [PDF]

, 2018
Visible Light Communication is a new information transmission method that involves sending data through light emitting diodes and photo-diodes via the visible light spectrum.
Harathi, Pranav
core   +1 more source

MAC Protocol Design for Optical Wireless Body‐Area Networks: Latency, Energy Efficiency and Scalability Analysis

IET Networks, Volume 15, Issue 1, January/December 2026.
This work investigates suitable MAC protocols for medical optical wireless body‐area networks (WBANs), focussing on multiple access management. Using realistic channel models, we evaluate the network performance in terms of energy efficiency, quality‐of‐service and scalability for different IEEE protocols, for both intra‐ and extra‐WBAN connectivity in
Christos Giachoudis, Mohammad‐Ali Khalighi, Stanislav Zvanovec, Vasilis K. Papanikolaou, Sotiris A. Tegos, George K. Karagiannidis   +5 more
wiley   +1 more source

Laser Based Underwater Communication Systems [PDF]

, 2016
We report on recent progress in the field of visible light communications including direct modulation of blue laser devices at data rates beyond 10 Gbit/s, and the transmission of 2.5 Gbit/s OOK data through water.
Giuliano, Giovanni, Kelly, Anthony E., Laycock, Leslie, Rowe, Duncan, Viola, Shaun, Watson, Scott   +5 more
core   +1 more source

Mid‐Infrared Free‐Space Optical Communications: Technologies, Demonstrations and Future Directions

IET Optoelectronics, Volume 20, Issue 1, January/December 2026.
Free‐space optical (FSO) communication is increasingly extending beyond the near‐infrared to the mid‐wave infrared (MWIR) and long‐wave infrared (LWIR) regions, which offer reduced turbulence, scattering and absorption for more robust links. This review summarises recent advances in MWIR/LWIR FSO technologies, including quantum cascade lasers, lithium ...
Darja Cirjulina, Zhuoyan Zhang, Abdul Hayee, Armands Ostrovskis, Richard Schatz, Hamza Dely, Yan‐Ting Sun, Toms Salgals, Sandis Spolitis, Vjaceslavs Bobrovs, Lu Zhang, Djamal Gacemi, Angela Vasanelli, Carlo Sirtori, Xianbin Yu, Oskars Ozolins, Xiaodan Pang   +16 more
wiley   +1 more source

25 Gbit/s differential phase-shift-keying signal generation using directly modulated quantum-dot semiconductor optical amplifiers [PDF]

, 2015
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Appl. Phys. Lett. 106, 213501 (2015) and may be found at https://doi.org/10.1063/1.4921785.Error-free
Bimberg, Dieter, Bunge, C.-A., Meuer, C., Schmeckebier, Holger, Schubert, C., Stubenrauch, M., Zeghuzi, A.   +6 more
core   +1 more source

Underwater Wireless Power Transfer for Unmanned Systems: State‐of‐the‐Art Review

IET Power Electronics, Volume 19, Issue 1, January/December 2026.
This comprehensive review presents the state‐of‐the‐art in underwater wireless power transfer (UWPT) systems, focusing on magnetic field‐coupled or inductive power transfer (IPT) technologies for underwater unmanned equipment. ABSTRACT Underwater wireless power transfer (UWPT) systems are finding increasing use in underwater unmanned equipment, among ...
Shiqi Li, Shaochun Hou, Huan Wu, Bo Luo
wiley   +1 more source

Covalent Organic Frameworks for Photocatalysis

Advanced Materials, Volume 37, Issue 52, December 29, 2025.
This review provides an overview of recent advances in covalent organic frameworks (COFs) for photocatalysis, focusing on sustainable energy applications like water splitting, hydrogen peroxide generation, and CO2 and N2 reduction. It discusses design principles, structure‐function relationships, challenges in COF photocatalysis, and strategies to ...
Bikash Mishra, Akhtar Alam, Avanti Chakraborty, Bidhan Kumbhakar, Samrat Ghosh, Pradip Pachfule, Arne Thomas   +6 more
wiley   +1 more source

Utilizing Single Lightwave for Delivering Baseband/FSO/MMW Traffics Simultaneously in PON Architecture

IEEE Access, 2019
In this work, we demonstrate an integrated optical baseband, free space optical (FSO) communication and millimeter-wave (MMW) traffics through the present passive optical network (PON) architecture by utilizing single wavelength for broadcasting triple ...
Chien-Hung Yeh, Wen-Piao Lin, Chien-Ming Luo, Yue-Ru Xie, Yao-Jen Chang, Chi-Wai Chow   +5 more
doaj   +1 more source