Acoustic trapping in bubble-bounded micro-cavities

Paul O'Mahoney, Craig McDougall, P. Glynne-Jones, Michael P. MacDonald
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引用次数: 1

Abstract

Abstract We present a method for controllably producing longitudinal acoustic trapping sites inside microfluidic channels. Air bubbles are injected into a micro-capillary to create bubble-bounded ‘micro-cavities’. A cavity mode is formed that shows controlled longitudinal acoustic trapping between the two air/water interfaces along with the levitation to the centre of the channel that one would expect from a lower order lateral mode. 7 μm and 10 μm microspheres are trapped at the discrete acoustic trapping sites in these micro-cavities.We show this for several lengths of micro-cavity.
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气泡边界微腔中的声捕获
提出了一种在微流体通道内可控地产生纵向声捕获点的方法。将气泡注入微细毛细管中,形成有气泡的“微腔”。形成了一个空腔模式,显示了两个空气/水界面之间受控制的纵向声捕获,以及从低阶横向模式中期望的通道中心悬浮。7 μm和10 μm微球被捕获在这些微腔的离散声捕获点上。我们在几个长度的微腔中证明了这一点。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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