Results 21 to 30 of about 101,887 (285)

Multiple Scattering Formulation of Two Dimensional Acoustic and Electromagnetic Metamaterials [PDF]

open access: yes, 2011
This work presents a multiple scattering formulation of two dimensional acoustic metamaterials. It is shown that in the low frequency limit multiple scattering allows us to define frequency-dependent effective acoustic parameters for arrays of both ...
Sánchez-Dehesa, José, Torrent, Daniel
core   +1 more source

Acoustic spin pumping in magnetoelectric bulk acoustic wave resonator

open access: yesAIP Advances, 2016
We present the generation and detection of spin currents by using magnetoelastic resonance excitation in a magnetoelectric composite high overtone bulk acoustic wave (BAW) resonator (HBAR) formed by a Al-ZnO-Al-GGG-YIG-Pt structure.
N. I. Polzikova   +5 more
doaj   +1 more source

Hybrid integrated photonics using bulk acoustic resonators

open access: yesNature Communications, 2020
Here, the authors demonstrate acousto-optic modulation of silicon nitride microring resonators using high-overtone bulk acoustic wave resonances, allowing modulation in the GHz range via acoustic waves.
Hao Tian   +6 more
doaj   +1 more source

Direct numerical simulation of wave propagation in saturated random granular packings using coupled LBM-DEM [PDF]

open access: yesEPJ Web of Conferences, 2021
Poroelasticity theory predicts wave velocities in a saturated porous medium through a coupling between the bulk deformation of the solid skeleton and porous fluid flow.
Cheng Hongyang   +3 more
doaj   +1 more source

Third-Harmonic and intermodulation distortion in bulk acoustic-wave resonators [PDF]

open access: yes, 2019
This article discusses on the measured third-order intermodulation (IMD3) products and third harmonics (H3) appearing in a set of six different solidly mounted resonators (SMR) and bulk acoustic-wave (BAW) resonators with different shapes and stack ...
Aigner, Robert   +3 more
core   +2 more sources

Combined surface acoustic wave and surface plasmon resonance measurement of collagen and fibrinogen layer physical properties

open access: yesSensing and Bio-Sensing Research, 2016
We use an instrument combining optical (surface plasmon resonance) and acoustic (Love mode surface acoustic wave device) real-time measurements on a same surface for the identification of water content in collagen and fibrinogen protein layers.
J.-M. Friedt, L.A. Francis
doaj   +1 more source

Residual strain measurement based on longitudinal to shear wave velocity ratio with a dual-mode EMAT

open access: yesFrontiers in Materials, 2023
In this paper, a new and noncontact method with measuring longitudinal to shear wave velocity ratio by a dual-mode electromagnetic acoustic transducer is proposed for residual strain measurement in a metal structure without knowing its thickness. Firstly,
Geng Dang   +4 more
doaj   +1 more source

Finite element error analysis of wave equations with dynamic boundary conditions: $L^2$ estimates [PDF]

open access: yes, 2018
$L^2$ norm error estimates of semi- and full discretisations, using bulk--surface finite elements and Runge--Kutta methods, of wave equations with dynamic boundary conditions are studied.
Hipp, David, Kovács, Balázs
core   +3 more sources

Correlation of BAW and SAW properties of langasite at elevated temperatures [PDF]

open access: yesJournal of Sensors and Sensor Systems, 2015
The full set of electromechanical data of langasite (La3Ga5SiO14) is determined in the temperature range from 20 to 900 °C using differently oriented bulk acoustic wave resonators.
M. Schulz   +6 more
doaj   +1 more source

Multiple wavemode scanning for near and far-side defect characterisation [PDF]

open access: yes, 2020
The combination of ultrasonic inspections using different wavemodes can give more information than is available with single mode inspection. In this work, the response of shear and Rayleigh waves to surface-breaking defects propagating on the near-side ...
Edwards, R. S. (Rachel S.), Xiang, L.
core   +1 more source

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