Results 11 to 20 of about 854,924 (287)
Analysis and Design of a Metamaterial Lens Antenna Using the Theory of Characteristic Modes
International Journal of Antennas and Propagation, 2018 A new single-layer metamaterial lens antenna aimed to operate at 10 GHz is proposed in this paper. The lens antenna consists of twelve capacitively coupled unit cells distributed along a ring and illuminated by an open-ended circular waveguide with a ...
Daniel Santillán-Haro +3 more
doaj +2 more sources
Effects of inter-resonator coupling in split ring resonator loaded metamaterial transmission lines [PDF]
, 2014 This paper investigates the effects of inter-resonator coupling in metamaterial transmission lines loaded with split ring resonators (SRRs). The study is performed from Bloch mode theory applied to the multiport equivalent circuit model of the unit cell ...
Fernández-Prieto, Armando +4 more
core +4 more sources
ACS Omega, 2021 Using the first-principles theory, this paper studies the Rh-doping behavior on the ZnO monolayer and investigates the adsorption and sensing behaviors of a Rh-doped ZnO (Rh–ZnO) monolayer to NO2 and O3 to explore its potential as a gas sensor to ...
Yan Wang, Xin Yang, Cong Hu, Tian Wu
semanticscholar +1 more source
Gap-Size-Dependent Effective Phase Transition in Metasurfaces of Closed-Ring Resonators
Crystals, 2021 We theoretically investigate a metal-to-insulator transition in artificial two-dimensional (2D) crystals (i.e., metasurfaces) of tightly coupled closed-ring resonators.
Seojoo Lee, Ji-Hun Kang
doaj +1 more source
Quasi-Regular Graphs Associated with Commutative Rings
Journal of Mathematics, 2022 One of the most important branches of mathematics is algebraic graph theory, which solves graph problems with algebraic methods. In graph theory, several algebraic properties of a ring can be represented.
Nasr Zeyada +2 more
doaj +1 more source
Stabilizing a metalloid {Zn12} unit within a polymetallide environment in [K2Zn20Bi16]6−
Nature Communications, 2020 The access to molecules comprising direct Zn–Zn bonds has become very topical in recent years for various reasons. Low-valent organozinc compounds show remarkable reactivities, and larger Zn–Zn-bonded gas-phase species exhibit a very unusual coexistence ...
Armin R Eulenstein +5 more
semanticscholar +1 more source
Communications Physics, 2023 Magnetic materials showing topologically nontrivial quantum states with high tunability is an undoubtedly important topic in condensed matter physics and material science.
Subhadip Pradhan +3 more
doaj +1 more source
A Multiband Antenna Stacked with Novel Metamaterial SCSRR and CSSRR for WiMAX/WLAN Applications
Micromachines, 2021 This paper presents an innovative method for the design of a triple band meta-mode antenna. This unique design of antenna finds application in a particular frequency band of WLAN and WiMAX.
Rajiv Mohan David +3 more
doaj +1 more source
Semiconjugate Factorizations of Higher Order Linear Difference Equations in Rings [PDF]
, 2013 We study linear difference equations with variable coefficients in a ring using a new nonlinear method. In a ring with identity, if the homogeneous part of the linear equation has a solution in the unit group of the ring (i.e., a unitary solution) then ...
Sedaghat, H.
core +1 more source
Angewandte Chemie, 2023 Artificial H2O2 photosynthesis by covalent organic frameworks (COFs) photocatalysts is promising for wastewater treatment. The effect of linkage chemistry of COFs as functional basis to photoelectrochemical properties and photocatalysis remains a ...
Yi Mou +9 more
semanticscholar +1 more source