Experimental Mechanics

, Volume 49, Issue 1, pp 135–151

Microfabricated Force Sensors and Their Applications in the Study of Cell Mechanical Response

Article

DOI: 10.1007/s11340-007-9119-8

Cite this article as:
Yang, S. & Saif, M.T.A. Exp Mech (2009) 49: 135. doi:10.1007/s11340-007-9119-8

Abstract

Living cells are sensitive to their mechanical environments and they transduce mechanical stimuli into biological responses. Developing suitable experimental techniques is essential to explore the question on how cells respond to mechanical stimuli. The current major techniques normally induce small cell deformations and measure their corresponding cell force response (small) in the range of 1 pN to 10nN. However, in many physiological conditions, cell deformations can be large (comparable to the cell sizes) inducing large force response. In order to explore cell mechanical behavior under large deformations, we introduce a class of microfabricated force sensors. The sensors, consisting of a probe and flexible beams, normally measure cell force response in the range of 1nN to 1μN. Both the one- and two-component force sensors have been developed, and have been used in cell experiments. These experiments showed the versatility of the force sensors. Representative experimental results on cell stretch force response, cell indentation force response, and in situ observation of the actin cytoskeleton during indentation, will be given. These results provide significant insight on cell mechanical response under large deformations.

Keywords

Cell mechanics BioMEMS (bio micro electro mechanical systems) Force sensors Large deformation Actin 

Copyright information

© Society for Experimental Mechanics 2007

Authors and Affiliations

  1. 1.Department of Mechanical Science and EngineeringUniversity of Illinois at Urbana-ChampaignUrbanaUSA
  2. 2.Department of Mechanical and Aerospace Engineering, Florida Institute of Technology150 West University BoulevardMelbourneUSA

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