Acoustic wave
Acoustic wave science realized by metamaterials
... of acoustic metamaterials has expanded marvelously over the past 15 ...review. Acoustic parameters, the mass density and bulk modulus, which are analogous to the permittivity and permeability in ...
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Design of a High Frequency Driving Circuit of Surface Acoustic Wave Transducer
... However, for practical applications in these fields of ultrasonic technology, the driving frequency of the drive circuit is mostly 40 kHz, and it is rare for the high frequency of 1 MHz for the transmission frequency. ...
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Acoustic wave propagation in rivers: an experimental study
... passive acoustic monitoring (PAM) in rivers, a surrogate method for bedload ...bedload acoustic signals depend on bedload characteristics ...the acoustic waves are ...estimate acoustic ...
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Simulation of the acoustic wave propagation using a meshless method
... Abstract. This paper presents numerical simulations of the acoustic wave propagation phenomenon modelled via Linearized Euler equations. A meshless method based on collocation of the strong form of the ...
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GUI Model for Comparative Study of Acoustic Wave Absorption
... electro-magnetic wave is highly attenuated by seawater, research on underwater communication is done using acoustic wave [2] ...underwater acoustic communication to construct sensor networks ...
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Relating acoustic wave velocities to formation mechanical properties
... and acoustic data is essential for field rock mechanical analysis, and it has thereby a great significance to field operations such as hydraulic fracturing, wellbore stability during drilling, sand production risk ...
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Experimental observation of the nonlinear coupling of flame flow and acoustic wave
... the acoustic flow is downward, the flame is pushed by the acoustic ...the acoustic flow is turned ...downward acoustic flow velocity, which is around ...
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Porous silicon bulk acoustic wave resonator with integrated transducer
... bulk acoustic wave (BAW) devices for filters and resonators. Acoustic filters such as surface acoustic wave (SAW) filters and BAW filters are a cornerstone of modern wireless communication ...
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The Design of Surface Acoustic Wave Receiving Circuit Based on Piezoelectric Transducer
... Surface Acoustic Wave (SAW) receiving circuit with high stability is introduced in this paper on the basis of analyzing common surface acoustic wave receiving ...of acoustic transit ...
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The Cochlear Amplifier is a Surface Acoustic Wave Resonator
... Evidence from a diverse literature has been advanced in support of the proposal that the cochlea functions as a surface acoustic wave resonator. Briefly, it would require a sensitivity to pressure and a ...
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Reflectionless High-Selective Bandpass Filter Based on Acoustic Wave Resonators
... of acoustic resonators has not been exploited ...of acoustic wave resonators, where two different resonant frequencies are found, allow to obtain a frequency response with high selectivity due to the ...
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Fabrication of high temperature surface acoustic wave devices for sensor applications
... surface acoustic wave (SAW) effect has been used as the main principle for devices that have been successfully applied to the processing of electrical signals for more than 30 ...
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On the solution of an acoustic wave equation with variable order derivative loss operator
... The wave equation for viscous losses involving integer-order derivatives only leads to an attenuation which is proportional to the square of the ...The acoustic wave equation with loss operator is ...
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Finite Element Analysis for Acoustic Wave Transmission in Ultrasonic Tomography Application
... the acoustic pressure wave propagation behavior in water-crude oil two phase liquid flow in a ...the acoustic impedance of the phases ...of acoustic wave propagation behavior in a ...
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A High Order Approximation of the Two Dimensional Acoustic Wave Equation with Discontinuous Coefficients
... Abstract This paper concerns with the modeling and construction of a fifth order method for two dimensional acoustic wave equation in heterogenous media. The method is based on a standard discretization of ...
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Study of Surface Acoustic Wave Sensor
... Surface Acoustic Wave Devices, a surface acoustic wave travel on the surface of the piezoelectric materials is ...The acoustic wave velocity depends to some extent on the types ...
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Acoustic Wave Propagator—A Split Region Implementation »
... In this article we develop and implement a split region technique that solves the time-dependent acoustic wave equation with greatly increased efficiency. This method uses a sophisticated Chebyshev ...
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Analytic Models for Acoustic Wave Propagation in Air
... Using ultrasound for imaging in biomedical and underwater applications is a fairly well understood and well researched phenomenon. However, it relies on a transducer- liquid-media interfacing for its functionality. Of ...
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DIGITALLY-TUNABLE SURFACE ACOUSTIC WAVE RESONATOR
... the acoustic wave from each finger travels at an assumed velocity with a resulting phase shift to the end of the sending ...the acoustic waves from the fingers they pass as they travel along the ...
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Acoustic wave propagation in multi layered media : An application to hip implants
... of acoustic waves in different me- ...linear wave model with absorption turns out to be a good model to use for this problem at normal ultrasound frequencies, according to an ...
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