Results 131 to 140 of about 2,765 (307)

The Circular Wired-Patch Resonator: Theory, Numerical Analysis and Filter Design Application

, 2003
In this paper, a new type of microstrip resonator is presented, i.e., the circular wire-patch resonator. This component exhibits interesting electrical performances, including very compact dimensions and the possibility of high integration in multilayer ...
Verdeyme S., Simeoni M., SORRENTINO, Roberto   +2 more
core   +1 more source

Photonic Time Crystals and Time‐Varying Electromagnetic Metamatter: A New Direction for Ultrafast Tunable Photonic and Microwave Materials and Devices

Advanced Science, EarlyView.
Photonic time crystals (PTCs) are systems in which electromagnetic parameters are modulated periodically in time, producing momentum bandgaps via temporal scattering rather than spatial Bragg processes. This review examines the theoretical frameworks, modeling, and computational tools for time‐varying media, and summarizes experimental demonstrations ...
Ranjan Kumar Patel, Shriram Ramanathan, Ronald P. Jenkins, Michael J. Carter   +3 more
wiley   +1 more source

3-D Reflectarray Antenna Design for Ku Application Using 3-D Printer Technology

IEEE Access
This paper presents the design, fabrication, and experimental validation of a Ku-band 3D-printed reflectarray (RA) antenna established on a quasi-periodic arrangement, operating at 13 GHz.
Ladislau Matekovits, Furkan Baskir, Hasan Kiyik, Aysu Belen, Tarlan Mahouti, Mehmet Ali Belen   +5 more
doaj   +1 more source

3D Large‐Scale Subwavelength‐Resolution Sound Sheet Tomography Based on an Active and Programmable Circular Meta‐Array

Advanced Science, EarlyView.
A programmable 2048‐element circular ultrasound array combined with a compact acoustic lens produces a thin “sound sheet” over a large field of view, and records echoes with wide angular diversity across the ring aperture. Coherence‐enhanced beamforming converts full‐matrix data into high‐contrast tomographic slices, delivering near‐diffraction‐limited
Qiu‐De Zhang, Zi‐Bin Lin, Zhuo Chen, Zhao‐Hui Liu, Jin‐Lian He, Jun‐Jie Song, Long‐Sheng Zeng, Liang Zhou, Ming‐Yue Ding, Yu‐Gui Peng, Ming Yuchi, Xue‐Feng Zhu   +11 more
wiley   +1 more source

Ring-shaped PZT Film Resonator for Bio-sensing Applications in Liquid Environment

, 2011
This work reports a novel design of a ring-shaped PZT film resonator for bio-sensing applications in liquid environment. The ring-shaped resonator reacts with a mass perturbation to provide eigenstate (frequency) shifts which could transfer to electrical
Wang, Dong F., Maeda, Ryutaro, Li, Xiaoqiang, Lu, Jian, Sagawa, Takahisa   +4 more
core   +1 more source

Full‐Body AI Agent: A Perspective on Multi‐Scale Collaborative AI for Systemic Biology and Precision Medicine

Advanced Science, EarlyView.
We propose the Full‐Body AI Agent, a multi‐scale collaborative framework with 7 biological‐layer agents. It unifies multi‐omics/clinical data via standardized protocols, enabling phenotype‐guided closed‐loop reasoning, quantitative evaluation, and LLM safeguards, with promising applications in tumor metastasis modeling and precision drug development ...
Aoqi Wang, Jiajia Liu, Jianguo Wen, Yangyang Luo, Zhiwei Fan, Liren Yang, Xi Hu, Ruihan Luo, Yankai Yu, Sophia Li, Weiling Zhao, Xiaobo Zhou   +11 more
wiley   +1 more source

Printable Conductive Hydrogels for Electrochemical Biosensing and Soft Bioelectronic Interfaces

Advanced Science, EarlyView.
Flexible, conductive hydrogels that integrate printability, mechanical tunability, biocompatibility, and electronic performance remain challenging to achieve. Here, we develop 3D‐printable poly(ethylene glycol)–poly(pyrrole)‐ hydrogels with tissue‐like mechanics, high cytocompatibility, and robust electrochemical function.
Lukas Hein, Renan Colucci, Xin Wei, Tsvetomir Ivanov, Katharina Landfester, Ulrike Kraft, Maria Villiou   +6 more
wiley   +1 more source

A Wideband Circularly Polarised High‐Gain Antenna Using Array Technology and Truncated Dielectric Plates

IET Microwaves, Antennas & Propagation
A gain enhancement method is presented for a circularly polarised (CP) wideband Fabry–Perot resonator antenna (FPRA). The proposed antenna structure consists of a multilayer configuration of closely spaced truncated dielectric plates (TDPs) and a ...
Zhixin Lei, Zhiming Liu, Bingtao Tan, Huilin Zhou, Yuhao Wang, Hao Xu   +5 more
doaj   +1 more source

Substrate Integrated Waveguide Antenna Applications [PDF]

, 2015
The research objective of this thesis is to provide a better solution for signal interference and reduce the size of waveguide antenna. The background investigations of different waveguide fabrication technologies and switch control methods are detailed ...
WU, LIANG
core  

Study of Free‐Space Optical Quantum Network: Review and Prospectives

Advanced Science, EarlyView.
Free from the constraints of fiber connections, free‐space quantum network enables longer and more flexible quantum network connections. This review summarizes and comparatively analyzes free‐space quantum network experiments based on ground stations, satellites, and mobile platforms.
Hua‐Ying Liu, Zhenda Xie, Shining Zhu
wiley   +1 more source