Results 221 to 230 of about 155,552 (273)

A Wideband Multi-Polarized Microstrip Antenna with High Polarization Isolation Based on Dual-Circular Polarization. [PDF]

Micromachines (Basel)
Wang X, Zhou H, Wang X, Lei X, Hao B, Zhong M, Zhou C.   +6 more
europepmc   +1 more source

Perspective: Hollow Core Optical Fibres for Ultraviolet and Visible Wavelengths

Advanced Science, EarlyView.
Hollow core optical fibres bypass material constraints that limit optical fibres at ultraviolet and visible wavelengths. However, their challenging fabrication has limited their development, and significant gains in performance remain possible. In this perspective we outline approaches to enable the next generation of fibres for shorter wavelengths ...
Robbie Mears, Kerrianne Harrington, Jonathan C. Knight, William J. Wadsworth, James M. Stone, Tim A. Birks   +5 more
wiley   +1 more source

A Stereolithography Appearance-Based Ultra-Wideband Wide-Beam Dielectric Resonator Antenna. [PDF]

Sensors (Basel)
Song C, Yuan Y, Ye S, Wang Z, Zhang Q, Liu X, Fang G.   +6 more
europepmc   +1 more source

Recent Advances and Perspectives on Field‐Effect Transistors for Artificial Visual Neuromorphic Systems

Advanced Science, EarlyView.
This review presents a comprehensive overview of FET‐based visual neuromorphic systems, covering their semiconductor materials, core device architectures, and operating mechanisms. It further reviews their implementation in emulating biological visual functions, addresses current technological challenges, and outlines future development directions. The
Liu Yaqian, Lang Menghua, Xu Yihang, Zhang Manyu, Lei Chunkang, Lu Xiaozhou, Dou Yi, Wang Lingli, Jiang Liying, Hu Yuanyuan, Chen Huipeng, Jiang Lang   +11 more
wiley   +1 more source

Non-Contact Measurement of Human Vital Signs in Dynamic Conditions Using Microwave Techniques: A Review. [PDF]

Sensors (Basel)
Ostrysz M, Szczepaniak Z, Sondej T.
europepmc   +1 more source

Brain‐Adhesive Bioelectronics With Shape‐Morphable and Biodegradable Properties for Stable Brain Signal Monitoring

Advanced Science, EarlyView.
A brain‐adhesive sensor (B‐Sensor) was developed by integrating a self‐healing biodegradable elastomer, a tissue‐adhesive hydrogel, and molybdenum electrodes. The B‐Sensor adheres to brain tissue, conforms to cortical curvatures, and maintains stable electrical performance over the intended period for reliable recording of spatiotemporal brain activity
Heewon Choi, Soeun Kim, Sumin Kim, Jaehyun Park, Soojung An, Sungjun Yoon, Mikyung Shin, Sangho Cho, Donghee Son   +8 more
wiley   +1 more source

A scalable UWB-to-reconfigurable MIMO filtenna with single-varactor tuning and enhanced isolation for adaptive 5G and cognitive radio systems. [PDF]

Sci Rep
Fouda HS, Hamoud AS, Attia MA.
europepmc   +1 more source

High frequency opportunities for Alzheimer's disease. [PDF]

Brain Commun
Lisgaras CP.
europepmc   +1 more source