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On-Chip Tunable Cell Rotation Using Acoustically Oscillating Asymmetrical Microstructures.

Lin Feng1,2, Bin Song3, Deyuan Zhang4,5

  • 1School of Mechanical Engineering & Automation, Beihang University, Beijing 100191, China. linfeng@buaa.edu.cn.

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|November 17, 2018
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Summary
This summary is machine-generated.

This study introduces a novel acoustic-based method for precise cell rotation. The acoustofluidic device allows tunable, non-contact manipulation of biological samples for various applications.

Keywords:
acoustic streamingacoustic wavescell rotationmicromachineon-chip manipulation

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Area of Science:

  • Biotechnology
  • Biophysics
  • Microfluidics

Background:

  • Precise manipulation of micrometer-sized biological samples is essential for research and applications.
  • Existing methods for cell manipulation face limitations in terms of contact, properties, or tunability.

Purpose of the Study:

  • To develop and validate an acoustic-based, on-chip method for tunable cell rotation.
  • To investigate the generation of acoustic streaming and its effect on cell manipulation.
  • To demonstrate the device's capability with different biological samples.

Main Methods:

  • Utilized a piezoelectric transducer to create an acoustic field.
  • Engineered an oscillating asymmetrical sidewall to generate acoustic streaming.
  • Employed numerical simulations to study acoustic streaming.
  • Experimentally demonstrated trapping and rotation of diatom cells and swine oocytes.

Main Results:

  • Acoustic streaming generation was effectively simulated and experimentally verified.
  • Successful trapping and rotation of diatom cells and swine oocytes were achieved.
  • A direct relationship between driving voltage and cell rotation speed was established, reaching up to 1800 rpm.

Conclusions:

  • The developed acoustofluidic device offers a simple, compact, non-contact, and biocompatible solution for tunable cell rotation.
  • This method is versatile, working irrespective of the specimen's optical, magnetic, or electrical properties.
  • The technology enables on-demand, precise single-cell manipulation for diverse biological studies.