Results 41 to 50 of about 236,046 (296)

Silicon–germanium receivers for short-wave-infrared optoelectronics and communications

Nanophotonics, 2020
Integrated silicon nanophotonics has rapidly established itself as intriguing research field, whose outlets impact numerous facets of daily life.
Benedikovic Daniel, Virot Léopold, Aubin Guy, Hartmann Jean-Michel, Amar Farah, Le Roux Xavier, Alonso-Ramos Carlos, Cassan Éric, Marris-Morini Delphine, Fédéli Jean-Marc, Boeuf Frédéric, Szelag Bertrand, Vivien Laurent   +12 more
doaj   +1 more source

High-Speed Short Reach Optical Communications : Technological Options and Challenges

, 2020
We review the current trend in the research and development of short reach optical communications. Typical application scenarios with corresponding technological options are discussed, and an outlook on the challenges from different aspects are presented.
Udalcovs, Aleksejs,, Pang, Xiaodan,, Schatz, Richard,, Popov, Sergei,, Ozolins, Oskars,   +4 more
core  

Underwater optical wireless communications : depth dependent variations in attenuation [PDF]

, 2013
Depth variations in the attenuation coefficient for light in the ocean were calculated using a one-parameter model based on the chlorophyll-a concentration Cc and experimentally-determined Gaussian chlorophyll-depth profiles.
Leeson, Mark S., Green, Roger, Johnson, Laura J.   +2 more
core   +1 more source

Thermally Modulated Metasurface Sensor for Dynamic and Time‐Resolved Isolation of Extracellular Vesicles

Advanced Materials, EarlyView.
A thermally adaptive plasmonic metasurface, functionalized with poly(N‐isopropylacrylamide) (PNIPAM) and anti‐CD63 antibodies, enables precise, on‐demand capture and release of extracellular vesicles (EVs). Delivering high recovery, improved purity, and intact vesicle structure, the platform offers a versatile, label‐free solution for real‐time EV ...
Beyza Nur Kucuk, Eylul Gulsen Yilmaz, Yusuf Aslan, Emre Ece, Özgecan Erdem, Murat Alp Gungen, Bengi Özgün Öztürk, Fatih Inci   +7 more
wiley   +1 more source

Smart and Secure Wireless Communications via Reflecting Intelligent Surfaces: A Short Survey

IEEE Open Journal of the Communications Society, 2020
With the emergence of the Internet of Things (IoT) technology, wireless connectivity should be more ubiquitous than ever. In fact, the availability of wireless connection everywhere comes with security threats that, unfortunately, cannot be handled by ...
Abdullateef Almohamad, Anas M. Tahir, Ayman Al-Kababji, Haji M. Furqan, Tamer Khattab, Mazen O. Hasna, Huseyin Arslan   +6 more
doaj   +1 more source

Adaptive beamforming for large arrays in satellite communications systems with dispersed coverage [PDF]

, 2011
Conventional multibeam satellite communications systems ensure coverage of wide areas through multiple fixed beams where all users inside a beam share the same bandwidth. We consider a new and more flexible system where each user is assigned his own beam,
Larue de Tournemine, Cécile, J. Montesinos, O. Besson, Besson, Olivier, C. Larue de Tournemine, Montesinos, Julien   +5 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

Large‐Area Printed PEDOT:PSS Shielding and Frequency Selective Surface (FSS) on Textiles

Advanced Materials Interfaces, EarlyView.
An all‐polymer e‐textile frequency selective surface (FSS) can present controlled shielding, presenting a competitive alternative to metal‐based inks. The results show how PEDOT: PSS‐based e‐textiles could be applied in RF devices for future wearable applications.
Benjamin King, Mahmoud Wagih
wiley   +1 more source

Single-and Dual-Band RF-Quasi-Reflectionless Planar Monopole Antennas and Their Application to Low-Reflection Antenna Arrays

IEEE Open Journal of Antennas and Propagation
An innovative family of planar monopole radiators with single- and dual-band operational characteristics and RF-quasi-reflectionless functionality is reported.
Runze Li, Li Yang, Zekai Luo, Xiu Yin Zhang, Roberto Gomez-Garcia   +4 more
doaj   +1 more source

Reliable Communications for Short-Range Wireless Systems

, 2011
Ensuring reliable communication is an important concern in short-range wireless communication systems with stringent quality of service requirements.

core   +1 more source