Results 251 to 260 of about 77,806 (312)
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Parametric excitation of acoustic waves in piezoelectric solid state magnetoplasma
Physics Letters A, 1979Abstract Absolute instability of the acoustic wave (excited parametrically) has been explored on the basis of the Bers and Briggs criterion in the presence of a large transverse static magnetic field. In the magnetoplasma threshold the electric field decreases to about 0.4 times the value at zero magnetic field.
S. Guha, P.K. Sen
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Kontrol'. Diagnostika, 2023
The paper presents the results of changing the parameters of electromagnetic responses in dielectric materials with defects under external pulsed acoustic excitation. It is shown that in electric and magnetic fields the amplitude of electromagnetic responses increases in accordance with the features of the applied fields.
A. A. Bespalko +2 more
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The paper presents the results of changing the parameters of electromagnetic responses in dielectric materials with defects under external pulsed acoustic excitation. It is shown that in electric and magnetic fields the amplitude of electromagnetic responses increases in accordance with the features of the applied fields.
A. A. Bespalko +2 more
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Steady-state acoustic reflectometry for the reconstruction of solid cylindrical cavities
Proceedings of the Second Joint 24th Annual Conference and the Annual Fall Meeting of the Biomedical Engineering Society] [Engineering in Medicine and Biology, 2002Acoustic pulse reflectometry has been used in the past for the indirect determination of the cross-section area vs. distance function describing the geometry of solid cylindrical cavities such as the upper airway tract. Excitation pulse bandwidth, noise and system losses are usually the main experimental issues and sources of reconstruction error in ...
E. Ceron, O. Yanez, R. Gonzalez
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The characteristics of acoustic wave propagation in rotating solid-state media
2018 IEEE Conference of Russian Young Researchers in Electrical and Electronic Engineering (EIConRus), 2018The results of theoretical and experimental researches of acoustic wave propagation into rotating solid-state media are presented. The influence of various rotation directions on wave characteristics is considered. The wave parameters, dependent from rotation velocity, which can be used as an informative signal for angular velocity sensors, are found ...
Yasemin Durukan +4 more
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Acoustical measurement of solid state non-linearity: Application to CsCdF3 and KZnF3
Journal of Sound and Vibration, 1983Abstract Combination of the results of two sets of measurements on the same crystalline samples of CsCdF3 and KZnF3 has made possible the evaluation of the third-order elastic (TOE) constants of these two fluoroperovskites. In the first technique the hydrostatic pressure dependence of the velocity of ultrasonic waves of different propagation and ...
M.A. Breazeale +4 more
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Q-factor of acoustic modes of a solid-state resonator at low temperatures
Measurement Techniques, 2011The acoustic characteristics of a cylindrical sample made of an aluminum alloy (model of gravity detector) in the course of cooling to temperatures on the order of the boiling point of liquid helium are studied. A specialized cryostat with working chamber having a large volume is presented.
R. G. Amamchyan +5 more
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Use of Solid-State Acoustic Transducers in Communications
The Journal of the Acoustical Society of America, 1971Semiconductor and solid-state devices have been used extensively to measure and generate stresses and stress waves in solids, liquids, and gases. Semiconductor devices have been used as strain gauges to measure strains and to respond to acoustic pressures. p-type silicon has a guage factor of over 100 times that of a metallic strain gauge. By using the
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Acoustic intensity modulation of solid-state lasers by means of a rocking mirror
Soviet Journal of Quantum Electronics, 1984Intensity modulation was produced in ruby and YAG:Nd3+ lasers by varying the angle of inclination of one of the resonator mirrors (rocking the mirror) at an ultrasonic frequency. Modulation occurred at twice the frequency of the excited mirror vibrations, the average intensity of the emission spikes simultaneously increased by a factor of more than 10,
G N Belova, E I Remizova
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ASME 2023 32nd Conference on Information Storage and Processing Systems, 2023
Abstract A multilayer ceramic capacitor (MLCC) vibrates when a pulse signal or a periodic signal is applied due to the piezoelectric characteristics of the MLCC, which causes structural resonance and acoustic noise in the Solid State Drive (SSD). Since MLCC is attached to the SSD through solders, the vibration of MLCC can be treated as a
Wheejae Kim +2 more
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Abstract A multilayer ceramic capacitor (MLCC) vibrates when a pulse signal or a periodic signal is applied due to the piezoelectric characteristics of the MLCC, which causes structural resonance and acoustic noise in the Solid State Drive (SSD). Since MLCC is attached to the SSD through solders, the vibration of MLCC can be treated as a
Wheejae Kim +2 more
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Two-frequency acoustic modulation of the intensity of radiation emitted by solid-state lasers
Soviet Journal of Quantum Electronics, 1982Internal two-frequency modulation of the intensity of radiation emitted by ruby, neodymium glass, and YAG lasers was achieved by simultaneous excitation of a 5–25 MHz surface acoustic wave on one of the resonator mirrors and longitudinal ultrasonic vibrations of 20–100 kHz frequency of the other mirror.
G N Belova, E I Remizova
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