Results 71 to 80 of about 102,740 (338)

A High-Gain Leaky-Wave Antenna Using Resonant Cavity Structure With Unidirectional Frequency Scanning Capability for 5G Applications

IEEE Access, 2021
This paper presents a high-gain leaky-wave antenna based on a resonant cavity (RC) structure with the capability of unidirectional beam scanning over predefined frequencies and desired beam angles.
Azita Goudarzi, Mohammad Mahdi Honari, Rashid Mirzavand   +2 more
doaj   +1 more source

Silicon Mie Resonators for Highly Directional Light Emission from monolayer MoS2 [PDF]

, 2017
Controlling light emission from quantum emitters has important applications ranging from solid-state lighting and displays to nanoscale single-photon sources.
A Splendiani, AE Krasnok, AE Krasnok, AG Curto, AG Curto, Ahmet Fatih Cihan, AI Kuznetsov, Alberto G. Curto, B Rolly, B Rolly, B Rolly, D Sikdar, DS Filonov, F Xia, G Grzela, H Chen, I Staude, I Staude, IM Hancu, J Groep van de, J Sautter, J Schuller, J Tian, JJ Wierer, JM Geffrin, JN Coleman, K Vynck, KF Mak, KF Mak, L Cao, L Cao, L Novotny, L Tong, M Kaniber, M Kerker, M Peter, M Ringler, Mark L. Brongersma, P Albella, P Bharadwaj, P Spinelli, Pieter G. Kik, PR Wiecha, R Paniagua-Domínguez, R Paniagua-Domínguez, S Akhavan, S Atakaramians, S Campione, S Checcucci, S Noda, S Person, S Wu, Søren Raza, T Coenen, T Shegai, W Liu, X Ma, XL Chu, Y Cui, Y Fontana, YH Fu   +60 more
core   +3 more sources

Smart Face Masks as Wearable Respiratory Sensors: A Review of Sensor Technologies, Materials, and Future Directions

Advanced Healthcare Materials, EarlyView.
This review highlights recent advances in smart face masks that actively monitor breathing. By integrating humidity, gas, temperature, pressure, strain, and triboelectric sensors, these masks track key respiratory parameters in real time. The article summarizes sensor mechanisms, compares performance across studies, and discusses challenges and future ...
Negin Faramarzi, Naseeh Backer Kannanthodi, Alice Nicole Casling, Babar Ali, Samira Lakouraj Mansouri, Alessandro Giuseppe D'aloia, Hossein Cheraghi Bidsorkhi, Maria Sabrina Sarto   +7 more
wiley   +1 more source

Fully Wireless and Flexible Valves for Multiplexed and Prolonged Intravesical Liquid Release

Advanced Healthcare Materials, EarlyView.
A fundamental mechanism for the simultaneous control of multiple magnetic valves is reported in a miniature soft robotic patch for intravesical drug delivery, enabling fully wireless and programmable liquid release. Integrated with a bioadhesive interface and induction‐coupling‐based liquid volume sensing, the soft robotic patch is promising to enable ...
Boyang Xiao, Yi Zhu, Yusheng Wang, Janene M. Pierce, Jeffrey J. Tosoian, Xiaoguang Dong   +5 more
wiley   +1 more source

Dielectric EBG Leaky-Wave Antenna: Design and Experimental Validation

IEEE Open Journal of Antennas and Propagation
This paper proposes a novel Electromagnetic Band-Gap (EBG) leaky-wave antenna (LWA) operating in the K-band with enhanced directivity at broadside. A rigorous method that combines the analysis of the band diagrams of Bloch waves propagating within two ...
Ludovica Tognolatti, Paolo Baccarelli, Cristina Ponti, Silvio Ceccuzzi, Vakhtang Jandieri, Giuseppe Schettini   +5 more
doaj   +1 more source

Bioinspired Adaptive Sensors: A Review on Current Developments in Theory and Application

Advanced Materials, EarlyView.
This review comprehensively summarizes the recent progress in the design and fabrication of sensory‐adaptation‐inspired devices and highlights their valuable applications in electronic skin, wearable electronics, and machine vision. The existing challenges and future directions are addressed in aspects such as device performance optimization ...
Guodong Gong, You Zhou, Qingxiu Li, Wenyu Zhao, Sunyingyue Geng, Hangfei Li, Yan‐Bing Leng, Shirui Zhu, Guanglong Ding, Yongbiao Zhai, Ziyu Lv, Ye Zhou, Su‐Ting Han   +12 more
wiley   +1 more source

Realizable Leaky Wave Antenna Based on Spin Photonic Topological Insulators

IEEE Access
The discovery of topological insulators and their photonic counterparts has led to significant advancements in electromagnetics. These materials offer an innovative way to control electromagnetic fields at the interface of trivial and topological ...
Sayyed Ahmad Abtahi, Mohsen Maddahali, Ahmad Bakhtafrouz   +2 more
doaj   +1 more source

Mesoporous Silica Nanoparticles in Biomedicine: Advances and Prospects

Advanced Materials, EarlyView.
Mesoporous silica nanoparticles offer unique properties like high surface area, tunable pores, and functionalization. They excel in drug delivery, tissue engineering, and stimuli‐responsive therapies, enabling targeted and controlled treatments. With roles in cancer therapy and diagnostics, their clinical translation requires addressing challenges in ...
Miguel Manzano, María Vallet‐Regí
wiley   +1 more source

Application of Huygens’ Metasurfaces to the Arbitrary Design of a Leaky-Wave Antenna [PDF]

, 2017
Leaky-wave antennas are guiding structures that leak power along their length. Their radiation is mainly characterized by the propagation constant (leakage factor and phase constant) of the traveling wave.
Abdo-Sánchez, Elena, Eleftheriades, George V., Epstein, Ariel   +2 more
core  

Exotic leaky wave radiation from anisotropic epsilon near zero metamaterials

, 2011
We investigate the emission of electromagnetic waves from biaxial subwavelength metamaterials. For tunable anisotropic structures that exhibit a vanishing dielectric response along a given axis, we find remarkable variation in the launch angles of energy
Feng, Simin, Halterman, Klaus, Nguyen, Viet Cuong   +2 more
core   +1 more source