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Related Experiment Video

Updated: Jan 2, 2026

Assembly and Characterization of an External Driver for the Generation of Sub-Kilohertz Oscillatory Flow in Microchannels

Assembly and Characterization of an External Driver for the Generation of Sub-Kilohertz Oscillatory Flow in Microchannels

Published on: January 28, 2022

Dancing with the Cells: Acoustic Microflows Generated by Oscillating Cells.

Alinaghi Salari^1,2, Sila Appak-Baskoy^1,3, Maya Ezzo⁴

¹Institute for Biomedical Engineering, Science and Technology (iBEST), Toronto, ON, M5B 1T8, Canada.

Small (Weinheim an Der Bergstrasse, Germany)

|December 13, 2019

Summary

This summary is machine-generated.

Individual cells can generate microstreaming flow when exposed to acoustic waves. This cell-induced flow

Keywords:

Lamb waves acoustofluidics adherent cells membrane oscillation microstreaming

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Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics

Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics

Published on: August 27, 2013

Area of Science:

Acoustic physics
Cellular mechanics
Microfluidics

Background:

Acoustic waves interacting with elastic objects, like microbubbles, create microstreaming flow.
Microfluidic applications utilize acoustic streaming for cell manipulation and mixing.
Acoustic streaming has been observed in biological systems, such as the mammalian inner ear.

Purpose of the Study:

To investigate if individual cells can induce microstreaming flow when subjected to acoustic waves.
To explore the relationship between cell properties and the induced microstreaming flow.
To assess the potential of cell-induced microstreaming as a label-free method for measuring cellular mechanical properties.

Main Methods:

Single adherent cells were placed in a microfluidic device and exposed to a controlled acoustic field.
Flow tracers were monitored to visualize and analyze the microstreaming flow around the cells.
Cellular structure and extracellular environment were modified using chemical treatments to observe their effects on microstreaming.

Main Results:

Individual cells were observed to induce microstreaming flow when excited by acoustic waves.
The maximum streaming flow velocity induced by a breast cancer cell (MDA-MB-231) reached approximately mm s^-1.
Cell stiffness was identified as the primary factor governing the maximum streaming velocity.

Conclusions:

Acoustic excitation of single cells can generate measurable microstreaming flow.
Cell-induced microstreaming velocity is significantly influenced by cellular mechanical properties, particularly stiffness.
Measurements of cell-induced microstreaming offer a label-free approach to assess cellular stiffness and other mechanical properties.