Characterization of Secondary Ultrasonic Waves Radiated from Bubbles Based on Small-Bubble Trapping Pattern Analysis
Characterization of Secondary Ultrasonic Waves Radiated from Bubbles Based on Small-Bubble Trapping Pattern Analysis
复制标题
基于小气泡捕获模式分析的气泡辐射二次超声波表征
DOI：
10.1143/jjap.41.3559
复制
发表时间：
2002
影响因子：
1.5
通讯作者：
N. Masuda
中科院分区：
文献类型：
--
作者：
Y. Yamakoshi;Y. Ozawa;Nader Chelly;Yasushi Kurita;N. Masuda
当微气泡在超声波作用下振动时，气泡周围会辐射出二次超声波，在相邻气泡之间产生二次Bjerknes力，如果振动相位相同，则有助于气泡聚集形成气泡云。提出了一种新的气泡二次超声波特征提取方法。这种方法是基于对干涉条纹图案的观察，该干涉条纹图案由被捕获在感兴趣的气泡周围的小气泡产生。讨论了一种估计二次超声波频率、相位和幅值的方法。对超声波造影剂产生的气泡进行了实验。结果表明，在200 kPa声压下，几十微米的聚集气泡辐射约7至8阶谐波。
When a microbubble oscillates under an ultrasonic wave, the bubble radiates a secondary ultrasonic wave around it. This wave produces the secondary Bjerknes force between the neighboring bubbles and it assists in the aggregation of bubbles to make bubble clouds if the phases of the vibrations are the same. In this paper, a novel technique to characterize the secondary ultrasonic wave radiated from a bubble is proposed. This method is based on the observation of the interference fringe pattern which is produced by small bubbles trapped around the bubble of interest. A method to estimate the frequency, phase and amplitude of the secondary ultrasonic wave is discussed. Experiments are carried out for bubbles produced by an ultrasonic wave contrast agent. The results show that aggregated bubbles of a few tens of micrometers radiate approximately 7th- to 8th-order harmonic waves at 200 kPa sound pressure.
使用超声波造影剂将酵母细胞捕获在超声波场内
DOI：
--
发表时间：
--
期刊：
Jpn.J.Appl.Phys. (Accepted)
影响因子：
--
作者：
Y.Yamakoshi;M.Koganezawa;Y.Yamakoshi
通讯作者：
Y.Yamakoshi