Results 51 to 60 of about 18,394 (288)

Circularly Polarized Asymmetric Single-Point Probe-Fed Hybrid Dielectric Resonator Antenna for Wireless Applications

Telecom
This paper presents a hybrid dielectric resonator antenna (HDRA) for circularly polarized (CP) radiation at 5 GHz, designed for WLAN applications.
NareshKumar Darimireddy
doaj   +1 more source

Auto‐Generated Valence States in Electrocatalysts for Boosting Oxygen and Hydrogen Evolution Kinetics in Alkaline Water/Alkaline Seawater/Simulated Seawater/Natural Seawater

Advanced Functional Materials, EarlyView.
This review systematically highlights the latest achievements in mixed‐valence states relevant to hydrogen and oxygen evolution reactions, providing essential insights into future directions and methods for large‐scale practical implementation. This critical review is expected to provide an overview of recent advancements in diverse valence‐state metal
Jitendra N. Tiwari, Gokul Bhaskaran, Krishan Kumar, Yun Suk Huh, Young‐Kyu Han   +4 more
wiley   +1 more source

A critical review on the development of multi-geometrical stacked wideband dielectric resonator antenna

Alexandria Engineering Journal
Dielectric resonator antennas (DRAs) use dielectric material as a resonator to accomplish high radiation efficiency and avoid severe conductor loss. The dielectric material that behaves as a resonator is plagued by a number of limitations, including ...
Mohamad Faiz Mohamed Omar, Ihsan Ahmad Zubir, Shahanawaz Kamal, Jagadheswaran A.L. Rajendran, Julie Juliewatty Mohamed, Zainal Arifin Ahmad, Mohd Fadzil Ain, Sharul Kamal Abdul Rahim   +7 more
doaj   +1 more source

Magnetoquasistatic resonances of small dielectric objects [PDF]

, 2019
A small dielectric object with positive permittivity may resonate when the free-space wavelength is large in comparison with the object dimensions if the permittivity is sufficiently high.
Forestiere, Carlo, Miano, Giovanni, Pascale, Mariano, Rubinacci, Guglielmo, Tamburrino, Antonello, Tricarico, Roberto, Ventre, Salvatore   +6 more
core   +3 more sources

Covalent Organic Frameworks for Photocatalytic CO2 Reduction: Metal Integration Principles, Strategies and Functions

Advanced Functional Materials, EarlyView.
Covalent organic frameworks (COFs) with metals have been recognized as versatile platforms for photocatalytic CO2 reduction (CO2PRR). Herein, an overview of metal integration strategies for COFs is systematically summarized. Regulatory mechanisms and structure–activity relationships between metal integration and COF‐based CO2PRR are emphasized.
Jie He, Minxian Zhang, Jinqiang Zhang, Hongqi Sun, Shaobin Wang, Xiaoguang Duan   +5 more
wiley   +1 more source

2D Magnetic and Topological Quantum Materials and Devices for Ultralow Power Spintronics

Advanced Functional Materials, EarlyView.
2D magnets and topological quantum materials enable ultralow‐power spintronics by combining robust magnetic order with symmetry‐protected, Berry‐curvature‐driven transport. Fundamentals of 2D anisotropy and spin‐orbit‐coupling induced band inversion are linked to scalable growth and vdW stacking.
Brahmdutta Dixit, Yifei Yang, Shawn Li, Yu‐Chia Chen, Qi Jia, Jian‐Ping Wang   +5 more
wiley   +1 more source

Direct imaging of tunneling from a potential well [PDF]

, 2009
We experimentally map the wavefunction in the vicinity of a radial potential well. We photograph light intensity near the tunneling region as well as measure the spiraling phase structure via interference with a reference wave.
Carmon, Tal, Tomes, Mathew, Vahala, Kerry J.   +2 more
core   +1 more source

Ideal magnetic dipole resonances with metal-dielectric-metal hybridized nanodisks

Optics Express, 2019
Magnetic resonances generated with nonmagnetic nanostructures have been widely used to design various functional nanophotonic devices, and it is important to realize pure magnetic dipole scattering for the unambiguous study of magnetic light-matter interactions.
Yao Zhang, Peng Yue, Jun-Yan Liu, Wei Geng, Ya-Ting Bai, Shao-Ding Liu   +5 more
openaire   +2 more sources

Hybrid dielectric slot-plasmonic ring resonator for Purcell enhancement

Physica Scripta, 2023
Abstract We present a computational study of Purcell factor enhancement for a novel hybrid-plasmonic ring resonator using a novel implementation of the body-of-revolution (BOR) finite-difference time-domain (FDTD) method. In this hybrid structure, a dielectric slot ring is surrounded by a metallic ring such that a hybrid plasmonic mode ...
S Mirzaei-Ghormish, D E Smalley, M Shahabadi, M Mohammad-Taheri, Ryan M Camacho   +4 more
openaire   +1 more source

Nanothermometry in Living Cells: Physical Limits, Conceptual and Material Challenges

Advanced Functional Materials, EarlyView.
Heat and temperature are fundamental to life. When nanothermometers began probing regions as small as a living cell, they triggered controversial claims of large intracellular temperature gradients. We review physical constraints energy‐conservation, entropy production, thermodynamic fluctuations, and molecular dynamics.
Taras Plakhotnik
wiley   +1 more source