Acoustic radiation pressure acting on spherical and cylindrical shells

Hasegawa, Toshiharu; Hino, Yasutaka; Annou, Akio; Noda, Hibiki; Katô, Masahiko; Inoue, N.

doi:10.1121/1.405653

Cited by 105 publications

(61 citation statements)

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“…The acoustic radiation pressure resulting from a plane wave incident upon spherical and cylindrical shells was also studied by Hasegawa et al [28] and it was shown that the differences between the frequency dependence of acoustic radiation pressure on spherical and cylindrical shells are more pronounced than those between solid spheres and cylinders. Wei et al [29] calculated the acoustic radiation force on a compressible cylinder in a standing wave.…”

Section: Introductionmentioning

confidence: 99%

“…. It can now be readily shown that and the axial radiation force is given by the following well-known relation [26,28]:…”

Section: 〈∫ ( ) 〉 (14-4)mentioning

confidence: 99%

“…The time-averaged force acting on a particle immersed in an infinite and ideal fluid is given by [8,26,28]:…”

Section: Acoustic Radiation Forcementioning

confidence: 99%

“…The problem of acoustic radiation force on rigid and elastic spherical/cylindrical particles in an unfocused sound field has been the subject of many studies [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31]. The very first studies on acoustic radiation force are those by King [8], Embleton [21], Gor'kov [22] and Nyborg [23], in which, several theoretical models for the calculation of the radiation force on spherical particles in different acoustical fields had been developed [24].…”

Section: Introductionmentioning

confidence: 99%

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Acoustic radiation force on a rigid cylinder in a focused Gaussian beam

Azarpeyvand

2013

Journal of Sound and Vibration

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ABSTRACT-The acoustic radiation force resulting from a 2D focused Gaussian beam incident on cylindrical objects in an inviscid fluid is investigated analytically. The incident and the reflected sound fields are expressed in terms of cylindrical wave functions and a weighting parameter, describing the beam shape and its location relative to the particle.Our main interest here is to study the possibility of using Gaussian beams for axial and lateral handling of rigid cylindrical particles by exerting attractive forces, towards the beam source and axis, respectively. Results have been presented for Gaussian beams with different waist sizes and wavelengths and it has been shown that the interaction of a focused Gaussian beam with a rigid cylinder can result in attractive axial and lateral forces under specific operational conditions. Results have also revealed that attractive axial forces generally occur when the backscattering amplitude is suppressed. The results provided here may provide a theoretical basis for development of single-beam acoustic handling devices.

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Section: Introductionmentioning

confidence: 99%

“…. It can now be readily shown that and the axial radiation force is given by the following well-known relation [26,28]:…”

Section: 〈∫ ( ) 〉 (14-4)mentioning

confidence: 99%

“…The time-averaged force acting on a particle immersed in an infinite and ideal fluid is given by [8,26,28]:…”

Section: Acoustic Radiation Forcementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Acoustic radiation force on a rigid cylinder in a focused Gaussian beam

Azarpeyvand

2013

Journal of Sound and Vibration

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“…The radiation force is a function of all the parameters that affect the scattered wave. Some of these parameters are the size, shape, material properties, location, orientation and the internal structure of the object [1][2][3][4][5][6][7][8] . There are several theoretical analyses of the acoustic radiation force confirming its dependency on the mentioned parameters.…”

Section: Introductionmentioning

confidence: 99%

Calculation of Acoustic Radiation Force and Moment in Microfluidic Devices

Lim

Rahnama

2014

Int. J. Mod. Phys. Conf. Ser.

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The ability to compute the acoustic radiation force and torque acting on a particle is critical to the design of microfluidic devices and the operating conditions for separation of different species of particles or biological cells using this force field. Closed-form formulae had been reported in the literature for calculating the acoustic radiation force acting on simple geometries such as spheres and ellipsoids. Also, these analytical formulae are limited to objects that are small compared to the wavelength of sound in the surrounding fluid. Numerical methods provide a more flexible way to calculate the acoustic radiation force and torque on suspended objects of arbitrary shape and size. In this paper, we will present results of using the finite element method and the multipole expansion method to calculate the acoustic radiation force and moment. For harmonic excitation, the Helmholtz equation is solved for the velocity potential of the acoustic field with the appropriate boundary conditions imposed on the surface of the spherical or ellipsoidal objects. The resultant force and torque were then calculated by performing a surface integral of the second order, time-averaged Brillouin stress over the object. The numerical results show good agreement with the analytical results for small size spheres and ellipsoids. When the object size is comparable to the wavelength of the acoustic field, the analytical results breakdown and numerical methods are necessary to obtain accurate results.

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