Method for selecting optimal operation frequencies in bulk acoustophoretic devices
(2018) 22nd International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2018 In 22nd International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2018 1. p.282-284- Abstract
We report a new method to select the optimal actuation frequencies in bulk acoustophoresis devices, by means of differential impedance spectrum analysis measured via the actuating piezoelectric transducer (piezo). The impedance spectra is rich of large spurious resonance peaks originating from bulk resonances not related to the channel resonance, Fig. 1a, why direct measurement of the piezo impedance spectra is not a viable strategy. We present here for the first time that the resonance modes of the acoustophoresis channel can be clearly identified by sequentially measuring the impedance spectra of the acoustophoresis manifold when the channel is filled with two different fluids and calculate the normalised differential impedance... (More)
We report a new method to select the optimal actuation frequencies in bulk acoustophoresis devices, by means of differential impedance spectrum analysis measured via the actuating piezoelectric transducer (piezo). The impedance spectra is rich of large spurious resonance peaks originating from bulk resonances not related to the channel resonance, Fig. 1a, why direct measurement of the piezo impedance spectra is not a viable strategy. We present here for the first time that the resonance modes of the acoustophoresis channel can be clearly identified by sequentially measuring the impedance spectra of the acoustophoresis manifold when the channel is filled with two different fluids and calculate the normalised differential impedance spectra.
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- author
- Core, Giulia ; Vitali, Valentina LU ; Garofalo, Fabio LU ; Laurell, Thomas LU and Lenshof, Andreas LU
- organization
- publishing date
- 2018
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Acoustophoresis, Frequency, Impedance
- host publication
- 22nd International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2018
- series title
- 22nd International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2018
- volume
- 1
- pages
- 3 pages
- publisher
- Chemical and Biological Microsystems Society
- conference name
- 22nd International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2018
- conference location
- Kaohsiung, Taiwan
- conference dates
- 2018-11-11 - 2018-11-15
- external identifiers
-
- scopus:85079907701
- ISBN
- 9781510897571
- language
- English
- LU publication?
- yes
- id
- 7be5b44a-58ec-44b8-aba3-84e812b4e3f2
- date added to LUP
- 2020-03-13 15:50:48
- date last changed
- 2023-09-10 01:19:44
@inproceedings{7be5b44a-58ec-44b8-aba3-84e812b4e3f2, abstract = {{<p>We report a new method to select the optimal actuation frequencies in bulk acoustophoresis devices, by means of differential impedance spectrum analysis measured via the actuating piezoelectric transducer (piezo). The impedance spectra is rich of large spurious resonance peaks originating from bulk resonances not related to the channel resonance, Fig. 1a, why direct measurement of the piezo impedance spectra is not a viable strategy. We present here for the first time that the resonance modes of the acoustophoresis channel can be clearly identified by sequentially measuring the impedance spectra of the acoustophoresis manifold when the channel is filled with two different fluids and calculate the normalised differential impedance spectra.</p>}}, author = {{Core, Giulia and Vitali, Valentina and Garofalo, Fabio and Laurell, Thomas and Lenshof, Andreas}}, booktitle = {{22nd International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2018}}, isbn = {{9781510897571}}, keywords = {{Acoustophoresis; Frequency; Impedance}}, language = {{eng}}, pages = {{282--284}}, publisher = {{Chemical and Biological Microsystems Society}}, series = {{22nd International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2018}}, title = {{Method for selecting optimal operation frequencies in bulk acoustophoretic devices}}, volume = {{1}}, year = {{2018}}, }