Results 51 to 60 of about 12,691 (253)
Advanced Materials, EarlyView.We present SCIENCE, an in‐ear multimodal physiological monitor featuring two key innovations. Water‐triggered morphological expansion (a 2‐mm cylinder to a 9‐mm spindle) achieves conformal adaptation across complex canal geometries. Simultaneously, active biofouling mitigation disrupts cerumen barriers, reducing sensor‐skin impedance by 20%.
Shuyun Zhuo +3 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
Advanced Materials Technologies, EarlyView.Direct nanoscratching with a 500 nm diamond lapping film creates groove‐guided liquid‐crystal alignment interfaces on PCB‐compatible Cu‐patterned RF substrates within minutes, eliminating polymer coating and high‐temperature baking. The coating‐free process enables optical/molecular alignment validation and voltage‐programmable 28 GHz reflection‐phase ...
Junseok Ma +5 more
wiley +1 more source
Echo scattering characteristics: Vortex beams reflected by rough surface in ocean turbulence
Results in PhysicsOptical field echo scattering characteristic is one of the essential technologies for the future integration of underwater laser communication and detection. Vortex beam (e.g.
PengFei Wu +4 more
doaj +1 more source
Interference Hypergraph-Based 3D Matching Resource Allocation Protocol for NOMA-V2X Networks
IEEE Access, 2019 Vehicle-to-everything (V2X) communications are regarded as the key technology in future vehicular networks due to its ability in providing efficient and reliable massive connections, improving traffic efficiency and safety, and supporting in-vehicle ...
Baoji Wang +5 more
doaj +1 more source
Wood‐Derived Nanocellulose‐Biocarbon Fresnel‐Zone Plate Lenses for Sub‐THz Frequency Applications
Advanced Materials Technologies, EarlyView.Wood‐derived nanocellulose and lignin‐based biocarbon were combined to fabricate fully bio‐based Fresnel zone plate (FZP) lenses for sub‐terahertz frequencies. These sustainable FZP lenses exhibit low dielectric loss and high directivity, achieving performance comparable to that of metallic references, and remain functional under environmental stress ...
Riikka Haataja +9 more
wiley +1 more source
Integrated transceivers for optical wireless communications
IEEE Journal of Selected Topics in Quantum Electronics, 2005 Line-of-sight free-space optical links can provide extremely high bandwidth communications, but this usually requires that transmitter and receiver are precisely aligned. In order to allow terminals to be mobile, links must be able to track users within their field of view so that the link is maintained.
O'Brien, D +13 more
openaire +1 more source
Information Transmission Strategies for Self‐Organized Robotic Aggregation
Advanced Robotics Research, EarlyView.In this review, we discuss how information transmission influences the neighbor‐based self‐organized aggregation of swarm robots. We focus specifically on local interactions regarding information transfer and categorize previous studies based on the functions of the information exchanged.
Shu Leng +5 more
wiley +1 more source
OPTICAL WIRELESS COMMUNICATION SYSTEM [PDF]
Journal of Engineering Science and Technology, 2016 The growing demand of bandwidth in this modern internet age has been testing the existing telecommunication infrastructures around the world. With broadband speeds moving towards the region of Gbps and Tbps, many researches have begun on the development ...
JOSHUA L.Y. CHIENG, IRDA HASSAN
doaj
Performance Analysis and Improvement for Secure VLC With SLIPT and Random Terminals
IEEE Access, 2020 This paper investigates the physical-layer data secure transmission for indoor visible light communications (VLC) with simultaneous lightwave information and power transfer (SLIPT) and random terminals.
Jin-Yuan Wang +5 more
doaj +1 more source