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Tissue Homogenization and Cell Lysis01:32

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Tissue homogenization involves disintegrating tissue architecture and lysing cells, and is an early step in isolating and analyzing cellular components. The method used for homogenization depends on the sample type, the amount of sample available, the analyte to be obtained, and the sensitivity of the method. These methods are broadly classified as mechanical and non-mechanical methods.
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Related Experiment Video

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Fabrication and Operation of Acoustofluidic Devices Supporting Bulk Acoustic Standing Waves for Sheathless Focusing of Particles
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Acoustofluidic Rotational Manipulation of Cells and Organisms Using Oscillating Solid Structures.

Adem Ozcelik1, Nitesh Nama2, Po-Hsun Huang1

  • 1Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC, 27708, USA.

Small (Weinheim an Der Bergstrasse, Germany)
|August 13, 2016
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Summary

This study demonstrates a novel polydimethylsiloxane microchannel that uses acoustic streaming to precisely rotate single cells and C. elegans. This method offers new possibilities for cell manipulation and biological research.

Keywords:
C. elegansacoustofluidicsmicrofluidicsrotational manipulations

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Area of Science:

  • Biotechnology
  • Microfluidics
  • Acoustic manipulation

Background:

  • Microfluidic devices are crucial for cell manipulation.
  • Controlling cell orientation in three dimensions remains a challenge.

Purpose of the Study:

  • To develop a microfluidic system for in-plane and out-of-plane cell rotation.
  • To investigate the use of acoustic streaming for precise cell manipulation.

Main Methods:

  • Fabrication of a polydimethylsiloxane microchannel with sharp-edge structures.
  • Integration of a piezoelement transducer with a glass slide.
  • Application of an external acoustic field to induce acoustic streaming.

Main Results:

  • Acoustic streaming flows were successfully generated within the microchannel.
  • Single cells and C. elegans were rotated both in-plane and out-of-plane.
  • Sharp-edge structures enhanced oscillation and flow generation.

Conclusions:

  • The developed microfluidic system effectively achieves precise 3D rotation of biological samples.
  • Acoustic streaming presents a viable method for advanced cell manipulation in microfluidics.