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Journal article
Acoustofluidic particle trapping, manipulation, and release using dynamic-mode cantilever sensors
Analyst (London), v 142(1), pp 123-131
01 Jan 2017
PMID: 27878146
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
We show here that dynamic-mode cantilever sensors enable acoustofluidic fluid mixing and trapping of suspended particles as well as the rapid manipulation and release of trapped micro-particles via mode switching in liquid. Resonant modes of piezoelectric cantilever sensors over the 0 to 8 MHz frequency range are investigated. Sensor impedance response, flow visualization studies using dye and microparticle tracers (100 mu m diameter), and finite element simulations of cantilever modal mechanics and acoustic streaming show fluid mixing and particle trapping configurations depend on the resonant mode shape. We found trapped particles could be: (1) rapidly manipulated on millimeter length scales, and (2) released from the cantilever surface after trapping by switching between low-and high-order resonant modes (less than 250 kHz and greater than 1 MHz, respectively). Such results suggest a potentially promising future for dynamic-mode cantilevers in separations, pumping and mixing applications as well as acoustofluidic-enhanced sensing applications.
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Details
- Title
- Acoustofluidic particle trapping, manipulation, and release using dynamic-mode cantilever sensors
- Creators
- Blake N. Johnson - Virginia TechRaj Mutharasan - Drexel University
- Publication Details
- Analyst (London), v 142(1), pp 123-131
- Publisher
- Royal Soc Chemistry
- Number of pages
- 9
- Grant note
- CBET-1159841 / NSF; National Science Foundation (NSF)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemical and Biological Engineering
- Web of Science ID
- WOS:000391448300013
- Scopus ID
- 2-s2.0-85006713277
- Other Identifier
- 991019170853104721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Chemistry, Analytical