Acoustic particle trapping driven by axial primary radiation force in shaped traps
(2022) In Physical Review E 105(3).- Abstract
We study particle trapping driven by the axial primary radiation force (A-PRF) in shaped traps exposed to standing bulk acoustic waves (S-BAW) using numerical simulations and experiments. The utilization of the stronger A-PRF as the main retention force is a consequence of standing-wave formation along the flow direction, instead of the orthogonal direction as in the case of traditionally used lateral-PRF S-BAW trapping setups. The study of particle dynamics reveals that the competition between A-PRF and viscous drag force governs particle trajectory. The ratio of the acoustic energy to the viscous work (β) provides a general criterion for particle trapping at a distinctive off-node site that is spatially controllable. Particles get... (More)
We study particle trapping driven by the axial primary radiation force (A-PRF) in shaped traps exposed to standing bulk acoustic waves (S-BAW) using numerical simulations and experiments. The utilization of the stronger A-PRF as the main retention force is a consequence of standing-wave formation along the flow direction, instead of the orthogonal direction as in the case of traditionally used lateral-PRF S-BAW trapping setups. The study of particle dynamics reveals that the competition between A-PRF and viscous drag force governs particle trajectory. The ratio of the acoustic energy to the viscous work (β) provides a general criterion for particle trapping at a distinctive off-node site that is spatially controllable. Particles get trapped for β≥βcr at some distance away from the nodal plane and the distance varies as β-c (c=0.6-1.0). The use of A-PRF as the retention force could potentially allow traditional S-BAW trapping systems to envisage high-throughput advancements surpassing the current standards in cell-handling unit operations.
(Less)
- author
- Malik, L. ; Nath, A. ; Nandy, S. ; Laurell, T. LU and Sen, A. K.
- organization
- publishing date
- 2022-03
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review E
- volume
- 105
- issue
- 3
- article number
- 035103
- pages
- 15 pages
- publisher
- American Physical Society
- external identifiers
-
- pmid:35428152
- scopus:85126700200
- ISSN
- 2470-0045
- DOI
- 10.1103/PhysRevE.105.035103
- language
- English
- LU publication?
- yes
- id
- dac3b039-55d5-42e5-b29e-dbd5e06ceff1
- date added to LUP
- 2022-05-20 15:33:05
- date last changed
- 2024-04-18 09:18:52
@article{dac3b039-55d5-42e5-b29e-dbd5e06ceff1, abstract = {{<p>We study particle trapping driven by the axial primary radiation force (A-PRF) in shaped traps exposed to standing bulk acoustic waves (S-BAW) using numerical simulations and experiments. The utilization of the stronger A-PRF as the main retention force is a consequence of standing-wave formation along the flow direction, instead of the orthogonal direction as in the case of traditionally used lateral-PRF S-BAW trapping setups. The study of particle dynamics reveals that the competition between A-PRF and viscous drag force governs particle trajectory. The ratio of the acoustic energy to the viscous work (β) provides a general criterion for particle trapping at a distinctive off-node site that is spatially controllable. Particles get trapped for β≥βcr at some distance away from the nodal plane and the distance varies as β-c (c=0.6-1.0). The use of A-PRF as the retention force could potentially allow traditional S-BAW trapping systems to envisage high-throughput advancements surpassing the current standards in cell-handling unit operations. </p>}}, author = {{Malik, L. and Nath, A. and Nandy, S. and Laurell, T. and Sen, A. K.}}, issn = {{2470-0045}}, language = {{eng}}, number = {{3}}, publisher = {{American Physical Society}}, series = {{Physical Review E}}, title = {{Acoustic particle trapping driven by axial primary radiation force in shaped traps}}, url = {{http://dx.doi.org/10.1103/PhysRevE.105.035103}}, doi = {{10.1103/PhysRevE.105.035103}}, volume = {{105}}, year = {{2022}}, }