Microbubble Trapping by Nonlinear Bubble Oscillation Using Pumping Wave
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概要
- 論文の詳細を見る
Microbubble manipulation by acoustic radiation force may play an important role in future drug delivery systems, because the required bubble manipulations, such as bubble trapping at the desired position and payload release by bubble destruction using a high-intensity ultrasonic wave, are controlled by ultrasonic waves. In this paper, a novel method of microbubble trapping by bubble nonlinear oscillation is proposed. Two ultrasonic waves, which have a harmonic frequency relation, are used in order to generate the force for trapping bubbles. The first wave is a pumping wave, which has a relatively high sound pressure. This wave is used for inducing the nonlinear oscillation of bubbles. The second wave is a control wave, whose frequency is set to be the harmonic frequency of the nonlinear bubble oscillation. The pressure gradient of the control wave in conjunction with the harmonic component of nonlinear oscillation generates the Bjerknes force applied to bubbles. This force forms multiple traps with a narrow separation for bubbles, which flow into the cross area of the two ultrasonic waves.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2007-07-30
著者
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Yamakoshi Yoshiki
Faculty Of Engineering Department Of Electric And Electronic Engineering Gunma University
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Miwa Takashi
Faculty Of Electro-communications The University Of Electro-communications
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Miwa Takashi
Faculty of Engineering, Gunma University, Kiryu, Gunma 376-8515, Japan
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Yamakoshi Yoshiki
Faculty of Engineering, Gunma University, Kiryu, Gunma 376-8515, Japan
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Nakajima Naritsugu
Faculty of Engineering, Gunma University, Kiryu, Gunma 376-8515, Japan
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Nakajima Naritsugu
Faculty of Engineering, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan
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