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Method for selecting optimal operation frequencies in bulk acoustophoretic devices

Core, Giulia ; Vitali, Valentina LU ; Garofalo, Fabio LU ; Laurell, Thomas LU and Lenshof, Andreas LU (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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Please use this url to cite or link to this publication:
author
; ; ; and
organization
publishing date
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}},
}