Results 41 to 50 of about 2,018 (250)

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

Efficient second-harmonic generation of quasi-bound states in the continuum in lithium niobate thin film enhanced by Bloch surface waves

Nanophotonics
Nonlinear optics has generated a wide range of applications in the fields of optical communications, biomedicine, and materials science, with nonlinear conversion efficiency serving as a vital metric for its progress. However, the weak nonlinear response
Lin Yun, Ye Yong, Fang Ziliang, Chen Bingyu, Zhang Haoran, Yang Tiefeng, Wei Yuming, Jin Yunxia, Kong Fanyu, Peng Gangding, Cao Hongchao, Guan Heyuan, Lu Huihui   +12 more
doaj   +1 more source

Observing the Viscous Relaxation Process of Silica Optical Fiber at ~1000 °C Using Regenerated Fiber Bragg Grating

Sensors, 2019
A regenerated fiber Bragg grating (RFBG) in silica fiber was used to observe the viscous relaxation process of the host silica fiber at high temperatures of around 1000 °C.
Zhiru Cui, Jianhui Gong, Chen Wang, Nana Che, Yanshuang Zhao, Quan Chai, Haifeng Qi, Elfed Lewis, Jing Ren, Jianzhong Zhang, Jun Yang, Libo Yuan, Gang-Ding Peng   +12 more
doaj   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

Coupling of Er3+ ions and Plasmonic Modes in Vertical Nanocavities for Spectral Broadening in Telecom Bands

Advanced Materials Technologies, EarlyView.
Left: Illustration of the glass & nanostructures system and the NIR emission at 1.5 µm, where the colored spheres represent the Er3+ ions within the doped glass. Right: Representation of the Stark splitting of the 4I13/2 and 4I15/2 manifolds of the Er3+, illustrating how the plasmonic modes facilitate the emission from the broader Stark manifold ...
Gaston Lozano Calderón, Víctor Anthony García Rivera, Stéphan Cagnon, Souleymane Toubou Bah, Younès Messaddeq, Euclydes Marega Junior   +5 more
wiley   +1 more source

Improved IEEE 802.11 point coordination function considering fiber-delay difference in distributed antenna systems [PDF]

, 2014
In this paper, we present an improved IEEE 802.11 wireless local-area network (WLAN) medium access control (MAC) mechanism for simulcast radio-over-fiber-based distributed antenna systems where multiple remote antenna units (RAUs) are connected to one ...
Feifei Yin, Kun Xu, Lu, Xun, Yuting Fan, Yin, Feifei, Gomes, Nathan J., Dai, Yitang, Yitang Dai, Fan, Yuting, Xu, Kun, Xun Lu, Li, Jianqiang, Nathan J. Gomes, Jianqiang Li   +13 more
core   +1 more source

Extrusion Bioprinting for Wound Healing: Innovations in Functionalized Bioinks and Bioprinting Technology

Advanced Materials Technologies, EarlyView.
Extrusion‐based bioprinting (EBB) has emerged as a versatile biofabrication platform capable of precisely depositing bioinks composed of biomaterials, cells, and bioactive agents to generate patient‐specific, biomimetic skin constructs. This paper presents a state‐of‐the‐art and forward‐looking overview of EBB for wound healing, encompassing printing ...
Hien‐Phuong Le, Anh Tuan Trong Tran, Ammara Waheed, Tran Thanh Tung, Dusan Losic   +4 more
wiley   +1 more source

Classification of Events Violating the Safety of Physical Layers in Fiber-Optic Network Infrastructures

Sensors, 2022
Fiber-optic network infrastructures are crucial for the transmission of data over long and short distances. Fiber optics are also preferred for the infrastructure of in-building data communications.
Michal Ruzicka, Lukas Jabloncik, Petr Dejdar, Adrian Tomasov, Vladimir Spurny, Petr Munster   +5 more
doaj   +1 more source

Waveguide Geometry–Driven Trade‐Offs in Resonant Cavity Sensor Performance

Advanced Optical Materials, EarlyView.
Waveguide geometry governs the interplay between sensitivity, intrinsic Q‐factor, and wavelength noise in silicon nitride resonant sensors. Contrary to intuition, higher sensitivity does not ensure superior performance. Low‐noise, high‐Q ridge resonators achieve the lowest detection limits, revealing that detection is ultimately constrained by noise ...
Mohammad Talebi Khoshmehr, Bakiye Imran Akca, Mateusz Słowikowski, Drecka Dagmara, Marcin Juchniewicz, Ryszard Piramidowicz, Muhammad Ali Butt   +6 more
wiley   +1 more source

A DL-Enabled Relay Node Placement and Selection Framework in Multicellular Networks

IEEE Access, 2023
The ever-increasing and diverse user demands as well as the need for uninterrupted access to the medium with minimum latency in dense machine type communication networks, are the key driving forces to a holistic network redesign.
Ioannis A. Bartsiokas, Panagiotis K. Gkonis, Dimitra I. Kaklamani, Iakovos S. Venieris   +3 more
doaj   +1 more source