Results 41 to 50 of about 284,460 (322)
All Acoustical Excitation of Spin Waves in High Overtone Bulk Acoustic Resonator
Acoustics, 2023 The hybrid high overtone bulk acoustic wave resonators (HBARs) consisting of a piezoelectric film transducers and gallium gadolinium garnet substrates with yttrium iron garnet films (YIG-GGG-YIG) are used for experimental excitation and detection of ...
Sergey Alekseev +2 more
doaj +1 more source
Acoustic bulk-surface-wave transducer
Electronics Letters, 1969 Bulk and surface waves are strongly coupled at a corrugated surface. Experiments have demonstrated transduction losses of less than 1dB and bandwidths of 20%. Methods of implementation at high frequencies are discussed.
R.F. Humphryes, E.A. Ash
openaire +1 more source
ANALYSIS OF ACOUSTIC PATH TRANSMISSION FACTOR FOR ANGULAR VELOCITY SENSOR
Известия высших учебных заведений России: Радиоэлектроника, 2019 The change in characteristics of ultrasonic waves’ transmittion in solid rotating media is the basis for the operation of acoustic angular velocity sensor.
Ya. Durukan +2 more
doaj +1 more source
Magneto-elastic waves in crystals of magnetic molecules
, 2007 We study magneto-elastic effects in crystals of magnetic molecules. Coupled equations of motion for spins and sound are derived and the possibility of strong resonant magneto-acoustic coupling is demonstrated. Dispersion laws for interacting linear sound
C. Calero +4 more
core +1 more source
On Dumb Holes and their Gravity Duals [PDF]
, 2011 Inhomogeneous fluid flows which become supersonic are known to produce acoustic analogs of ergoregions and horizons. This leads to Hawking-like radiation of phonons with a temperature essentially given by the gradient of the velocity at the horizon.
Das, Sumit R. +3 more
core +2 more sources
Thermo-acoustic wave propagation and reflection near the liquid-gas critical point
, 2009 We study the thermo-acoustic wave propagation and reflection near the liquid-gas critical point. Specifically, we perform a numerical investigation of the acoustic responses in a near-critical fluid to thermal perturbations based on the same setup of a ...
A. Onuki +5 more
core +1 more source
Directional Acoustic Bulk Waves in a 2D Phononic Crystal
CrystalsWe used the transfer matrix method to investigate the conditions supporting the existence of directional bulk waves in a two-dimensional (2D) phononic crystal. The 2D crystal was a square lattice of unit cells composed of rectangular subunits constituted
Pierre A. Deymier +5 more
doaj +1 more source
Resonant Ultrasonic Particle Manipulators and their Applications in Sensor Systems
, 2004 The paper describes the use of ultrasonic standing waves as bulk acoustic wave actuators, exploiting the acoustic radiation forces within the standing wave to move biological cells or other particles.
Harris, N.R. +3 more
core +1 more source
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2012 We investigate the excitation and propagation of acoustic waves in polycrystalline aluminum nitride films along the directions parallel and normal to the c-axis.
M. Clement +4 more
semanticscholar +1 more source
Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
wiley +1 more source