Results 101 to 110 of about 3,338 (308)

Compact ultra-wideband dielectric resonator antennas [PDF]

, 2015
UWB communication systems were newly regenerated when the Federal Communications Commission (FCC) defined the 3.1-10.6 GHz unlicensed band for UWB applications.
Kasgari, Mohammad Abedian
core  

Phase‐Pure and Size‐Tunable Tin Halide Perovskite Quantum Dots

Advanced Materials, EarlyView.
A trioctylphosphine oxide modulated protocol allows for the synthesis and study of the optical properties of a broad library of tin halide perovskite quantum dots across multiple A‐ and X‐site compositions with precise size tuning while eliminating unwanted 2D phases.
Ole F. Dressler, Benjamin Aymoz, Sebastian Sabisch, Stefanie Frick, Sebastian Siol, Dmitry N. Dirin, Simon C. Boehme, Maksym V. Kovalenko   +7 more
wiley   +1 more source

Experimental and numerical investigation of the microwave dielectric properties of the MgTiO3 ceramic matrix added with CaCu3Ti4O12

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
This paper describes an experimental and numerical investigation of the dielectric resonators based on the MgTiO3 ceramic matrix, which relates to their dielectric properties in microwave. The resonators are compounds of the MgTiO3 added with 4, 6, 8, 10
P.W.S. Oliveira, G.F.M. Pires Junior, A.J.M. Sales, H.O. Rodrigues, A.S.B. Sombra   +4 more
doaj   +1 more source

High-efficiency dielectric resonator antennas in the terahertz range

, 2016
We describe a technique for realizing high-efficiency dielectric resonator antennas composed of intrinsic silicon in the terahertz range. These dielectric resonator antennas are deployed in both uniform and nonuniform array configurations, for the ...
Shruti Nirantary, Nirantar, S., Bhaskaran, M., Sriram, S., Christophe Fumeaux, Fumeaux, C., Withawat Withayachumnankul, Sharath Sriramy, Headland, D., Withayachumnankul, W., Daniel Headland, Madhu Bhaskarany   +11 more
core   +1 more source

Weakly‐Coordinating Non‐Fluorinated Diluents for Local High‐Concentration Electrolytes in Advanced Lithium Metal Batteries

Advanced Materials, EarlyView.
This perspective critically evaluates non‐fluorinated diluents in local high‐concentration electrolytes, categorizing their solvation behavior, interfacial mechanisms, and sustainability potential to guide future electrolyte design for lithium metal batteries.
Yin Cui, Xinrui Li, Nan Jiang, Xinyan Huang, E. Lora da Silva, Ruo Zhao, Tao Yang, Qingxia Liu, Xidong Lin   +8 more
wiley   +1 more source

Analysis and Experiment of Equilateral Triangular Uniaxial-Anisotropic Dielectric Resonator Antennas

IEEE Access, 2018
The design procedure of a uniaxial anisotropic equilateral triangular dielectric resonator antenna (ETDRA) is presented for the first time. The uniaxial material is realized by a periodic stack of sheets of two dissimilar materials with different ...
Saeed Fakhte, Iman Aryanian, Ladislau Matekovits   +2 more
doaj   +1 more source

Additive Manufacturing of Ordered Polymer Nanostructures

Advanced Materials, EarlyView.
A new 3D printing strategy, Polymerization‐Induced Arrangement of Nanostructures with Order‐tunability (PIANO), enables the formation of ordered nanostructures in polymer materials by enhancing chain mobility during photopolymerization, overcoming the kinetic arrest that leads to disordered morphologies in the conventional Polymerization‐Induced ...
Di Wu, Kun Zhou, Kenny Lee, Yuan Xiu, Carol Hiu Wai Yan, Khoon S. Lim, Cyrille Boyer   +6 more
wiley   +1 more source

Field forming in dielectric resonator antennas

, 2008
Dielectric Resonator Antennas (DRAs) propagate electromagnetic waves by setting up resonant modes determined by their physical geometry and excitation feeds.
Record, Paul, Fayad, Hazem A
core  

Tailoring Phonon‐Driven Responses in α‐MoO3 through Isotopic Enrichment

Advanced Materials, EarlyView.
ABSTRACT The implementation of polaritonic materials into nanoscale devices requires selective tuning of parameters to realize desired spectral or thermal responses. One robust material, α‐MoO3, an orthorhombic crystal boasting three distinct phonon dispersions, provides three polaritonic dispersions of hyperbolic phonon polaritons (HPhPs) across the ...
Thiago S. Arnaud, Ryan W. Spangler, Johnathan D. Georgaras, Jonah B. Haber, Daniel Hirt, Maximilian Obst, Gonzalo Álvarez‐Pérez, Mackey Long III, Felix G. Kaps, Jakob Wetzel, Courtney Ragle, John E. Buchner, Youngji Kim, Aditha S. Senarath, Richarda Niemann, Mingze He, Giulia Carini, Unai Arregui‐Leon, Akash C. Behera, Ramachandra Bangari, Nihar Sahoo, Niels C. Brumby, J. Michael Klopf, Martin Wolf, Lukas M. Eng, Susanne C. Kehr, Thomas G. Folland, Alexander Paarmann, Patrick E. Hopkins, Felipe Jornada, Jon‐Paul Maria, Joshua D. Caldwell   +31 more
wiley   +1 more source

A passive beamforming hemispherical liquid antenna using a simple metal ball

IET Microwaves, Antennas & Propagation
The authors propose a novel yet simple way of passive beamforming using a liquid antenna. A hemispherical dielectric resonator antenna filled with a dielectric liquid is considered to realise the fundamental TE111 mode, and a small, weighted metal ball ...
Viswanadh Raviteja Gudivada, Yi Huang, Elliot L. Bennett   +2 more
doaj   +1 more source