Calculation of acoustical radiation force on microsphere by spherically-focused source

被引：4
作者：
Wu, Rongrong [1 ]
Liu, Xiaozhou [1 ,2 ]
Liu, Jiehui [1 ]
Gong, Xiufen [1 ]
机构：
[1] Nanjing Univ, Key Lab Modern Acoust, Inst Acoust, Nanjing 210093, Jiangsu, Peoples R China
[2] Chinese Acad Sci, Inst Acoust, State Key Lab Acoust, Beijing 100190, Peoples R China
来源：
ULTRASONICS | 2014年 / 54卷 / 07期
基金：
中国国家自然科学基金;
关键词：
Radiation force; Acoustical tweezers; Three-dimensional trapping force; Spherically-focused ultrasound; BEAM; MANIPULATION; FEASIBILITY; PARTICLES; SPHERE;
D O I：
10.1016/j.ultras.2014.05.005
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
Based on the ray acoustics approach, the trapping effects on a microsphere by an ideally spherically-focused ultrasound are discussed. The acoustical radiation force from a focused ultrasound beam on a spherical particle in a three-dimensional sound field is calculated considering the effect of the attenuation of the ultrasound beam both inside the particle and in the surrounding medium. The results show that as long as the particle is in the range of the ultrasound beam and as long as the appropriate parameters of the transducer are selected, the particle will be captured in the vicinity of the focus of the ultrasound beam. Also, the particle radius and different parameters of the transducer are analyzed for their affect on the radiation force. (C) 2014 Elsevier B.V. All rights reserved.
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页码：1977 / 1983
页数：7
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