### Abstract

Dynamic radiation force from ultrasound has found increasing applications in elasticity imaging methods such as vibro-acoustography. Radiation force that has both static and dynamic components can be produced by interfering two ultrasound beams of slightly different frequencies. This paper presents a method to measure both static and dynamic components of the radiation force on a sphere suspended by thin threads in water. Due to ultrasound radiation force, the sphere deflects to an equilibrant position and vibrates around it. The static radiation force is estimated from the deflection of the sphere. The dynamic radiation force is estimated from the calculated radiation impedance of the sphere and its vibration speed measured by a laser vibrometer. Experimental results on spheres of different size, vibrated at various frequencies, confirm the theoretical prediction that the dynamic and static radiation force on a sphere have approximately equal magnitudes [G. T. Silva, Phys. Rev. EPLEEE810.1103/PhysRevE.71.056617<?Pub Caret?> 71, 056617 (2005)].

Original language | English (US) |
---|---|

Article number | 056618 |

Journal | Physical Review E - Statistical, Nonlinear, and Soft Matter Physics |

Volume | 71 |

Issue number | 5 |

DOIs | |

State | Published - May 2005 |

### Fingerprint

### ASJC Scopus subject areas

- Physics and Astronomy(all)
- Condensed Matter Physics
- Statistical and Nonlinear Physics
- Mathematical Physics
- Medicine(all)

### Cite this

*Physical Review E - Statistical, Nonlinear, and Soft Matter Physics*,

*71*(5), [056618]. https://doi.org/10.1103/PhysRevE.71.056618

**Measurement of dynamic and static radiation force on a sphere.** / Chen, Shigao D; Silva, Glauber T.; Kinnick, Randall R.; Greenleaf, James F; Fatemi, Mostafa.

Research output: Contribution to journal › Article

*Physical Review E - Statistical, Nonlinear, and Soft Matter Physics*, vol. 71, no. 5, 056618. https://doi.org/10.1103/PhysRevE.71.056618

}

TY - JOUR

T1 - Measurement of dynamic and static radiation force on a sphere

AU - Chen, Shigao D

AU - Silva, Glauber T.

AU - Kinnick, Randall R.

AU - Greenleaf, James F

AU - Fatemi, Mostafa

PY - 2005/5

Y1 - 2005/5

N2 - Dynamic radiation force from ultrasound has found increasing applications in elasticity imaging methods such as vibro-acoustography. Radiation force that has both static and dynamic components can be produced by interfering two ultrasound beams of slightly different frequencies. This paper presents a method to measure both static and dynamic components of the radiation force on a sphere suspended by thin threads in water. Due to ultrasound radiation force, the sphere deflects to an equilibrant position and vibrates around it. The static radiation force is estimated from the deflection of the sphere. The dynamic radiation force is estimated from the calculated radiation impedance of the sphere and its vibration speed measured by a laser vibrometer. Experimental results on spheres of different size, vibrated at various frequencies, confirm the theoretical prediction that the dynamic and static radiation force on a sphere have approximately equal magnitudes [G. T. Silva, Phys. Rev. EPLEEE810.1103/PhysRevE.71.056617<?Pub Caret?> 71, 056617 (2005)].

AB - Dynamic radiation force from ultrasound has found increasing applications in elasticity imaging methods such as vibro-acoustography. Radiation force that has both static and dynamic components can be produced by interfering two ultrasound beams of slightly different frequencies. This paper presents a method to measure both static and dynamic components of the radiation force on a sphere suspended by thin threads in water. Due to ultrasound radiation force, the sphere deflects to an equilibrant position and vibrates around it. The static radiation force is estimated from the deflection of the sphere. The dynamic radiation force is estimated from the calculated radiation impedance of the sphere and its vibration speed measured by a laser vibrometer. Experimental results on spheres of different size, vibrated at various frequencies, confirm the theoretical prediction that the dynamic and static radiation force on a sphere have approximately equal magnitudes [G. T. Silva, Phys. Rev. EPLEEE810.1103/PhysRevE.71.056617<?Pub Caret?> 71, 056617 (2005)].

UR - http://www.scopus.com/inward/record.url?scp=26944469526&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=26944469526&partnerID=8YFLogxK

U2 - 10.1103/PhysRevE.71.056618

DO - 10.1103/PhysRevE.71.056618

M3 - Article

C2 - 16089679

AN - SCOPUS:26944469526

VL - 71

JO - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics

JF - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics

SN - 1539-3755

IS - 5

M1 - 056618

ER -