Related Experiment Video
Updated: Jun 23, 2026
08:41
Measuring the Mechanical Properties of Living Cells Using Atomic Force Microscopy
Published on: June 27, 2013
Measuring elastic properties of cells by evaluation of scanning acoustic microscopy V(Z) values using simplex
T Kundu1, J Bereiter-Hahn, K Hillmann
1Department of Civil Engineering and Engineering Mechanics, University of Arizona, Tucson, Arizona 85721 USA.
Biophysical Journal
|May 12, 2009
Summary
This study introduces a new acoustic microscopy technique to measure cell properties like stiffness and thickness. The method reveals detailed variations in cell mechanics, aiding in understanding cell structure and function.
Area of Science:
- Biophysics
- Cell Biology
- Acoustic Microscopy
Background:
- Accurate characterization of biological cell properties is crucial for understanding cellular mechanics and function.
- Existing techniques may have limitations in resolving spatial variations of mechanical and acoustic properties within cells.
Purpose of the Study:
- To develop and validate a novel acoustic microscopy technique for determining acoustic properties and dimensions of biological cells.
- To investigate spatial variations in cell thickness, density, acoustic wave velocity, stiffness, and attenuation.
Main Methods:
- Utilizing scanning acoustic microscopy to scan biological cells.
- Varying the distance between the cell and microscope lens to obtain voltage curves.
- Employing simplex optimization technique to invert voltage curves and extract cell parameters.
Main Results:
- The technique successfully determines acoustic properties (stiffness, attenuation) and physical dimensions (thickness, volume) of cells.
- Demonstrated characteristic stiffness distributions in endothelial cells, showing high stiffness in lamellar cytoplasm and lower stiffness near the cell body transition.
- Acoustic attenuation is correlated with cytoplasm accumulation and organelle scattering.
Conclusions:
- The proposed acoustic microscopy method offers a non-invasive approach to quantitatively assess cell mechanical and acoustic properties.
- The findings provide insights into the heterogeneous mechanical landscape of cells, specifically endothelial cells.
- This technique has potential applications in cell biology research and diagnostics.
