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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.
Original language | English |
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Pages (from-to) | 22-26 |
Number of pages | 5 |
Journal | Optofluidics, Microfluidics and Nanofluidics |
Volume | 3 |
Issue number | 1 |
DOIs | |
Publication status | Published - 5 Dec 2016 |
Keywords
- acoustic trapping
- transducer
- lab-on-a-chip
- 3D trapping
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Dive into the research topics of 'Acoustic trapping in bubble-bounded micro-cavities'. Together they form a unique fingerprint.Projects
- 1 Finished
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Scale Up of Optical Fractionation for Bio-Processing (Joint with Heriot Watt University)
MacDonald, M. (Investigator)
Engineering and Physical Sciences Research Council
1/05/14 → 31/12/15
Project: Research