Results 31 to 40 of about 335,429 (365)
Highly Mass-Sensitive Thin Film Plate Acoustic Resonators (FPAR)
Sensors, 2011 The mass sensitivity of thin aluminum nitride (AlN) film S0 Lamb wave resonators is theoretically and experimentally studied. Theoretical predictions based on modal and finite elements method analysis are experimentally verified.
Ventsislav Yantchev +6 more
doaj +1 more source
Applied Sciences, 2020 We propose a reconfigurable terahertz (THz) metamaterial (RTM) to investigate its multifunctional electromagnetic characteristics by moving the meta-atoms of split-ring resonator (SRR) array.
Yuhang Liao, Yu-Sheng Lin
doaj +1 more source
Nuclear Physics B, 2004 We study the scenario of thermal leptogenesis in which the leptonic asymmetries are resonantly enhanced through the mixing of nearly degenerate heavy Majorana neutrinos that have mass differences comparable to their decay widths. Field-theoretic issues arising from the proper subtraction of real intermediate states from the lepton-number-violating ...
Pilaftsis, Apostolos +1 more
openaire +2 more sources
Enhancement of second harmonic generation in a doubly resonant metamaterial [PDF]
Applied Physics Letters 99, 024101 (2011), 2011 We investigate second harmonic (SH) generation in a doubly resonant metamaterial. We show that SH generation can be enhanced when the resonant condition is satisfied for the SH frequency as well as for the fundamental frequency. A unit cell of the doubly resonant metamaterial consists of two coupled resonators, one of which resonates at the fundamental
arxiv +1 more source
Energies, 2016 Wireless power transfer (WPT) is greatly affected when the transmission channel is surrounded by non-ferromagnetic metallic objects and the alternating magnetic field interacts with the metal conductor, which is more of an issue in wirelessly charged ...
Linlin Tan +5 more
doaj +1 more source
Surface Acoustic Wave Resonators for Wireless Sensor Network Applications in the 433.92 MHz ISM Band
Sensors, 2020 Surface acoustic wave (SAW) resonators are low cost devices that can operate wirelessly on a received radio frequency (RF) signal with no requirement for an additional power source.
Evangelos Moutoulas +2 more
doaj +1 more source
Efficient second harmonic generation in a metamaterial with two resonant modes coupled through two varactor diodes [PDF]
Applied Physics Letters, Vol. 100, pp. 044103 (2012), 2012 We present an effective method to generate second harmonic (SH) waves using nonlinear metamaterial composed of coupled split ring resonators (CSRRs) with varactor (variable capacitance) diodes. The CSRR structure has two resonant modes: a symmetric mode that resonates at the fundamental frequency and an anti-symmetric mode that resonates at the SH ...
arxiv +1 more source
Complex Permittivity Measurements at Variable Temperatures of Low Loss Dielectric Substrates Employing Split Post and Single Post Dielectric Resonators [PDF]
, 2004 A split post dielectric resonator in a copper enclosure and a single post dielectric resonator in a cavity with superconducting end-plates have been constructed and used for the complex permittivity measurements of single crystal substrates.
Jacob, Mohan V. +3 more
core +2 more sources
The Resonator Banjo Resonator, part 2: What makes them really crack? [PDF]
, 2015 A simple experiment quantifies the difference between the sound production of a banjo with and without a resonator back. Driven by a small tweeter mounted inside the pot, for frequencies above about 4500 Hz, the produced external sound is 6 to 10 dB ...
Politzer, David
core +2 more sources