Finite element modeling of the micropipette aspiration of malaria-infected red blood cells

E. H. Zhou; C. T. Lim; K. S. W. Tan; Ser Tong Quek

doi:10.1117/12.621911

12 April 2005 Finite element modeling of the micropipette aspiration of malaria-infected red blood cells

E. H. Zhou, C. T. Lim, K. S. W. Tan, Ser Tong Quek

Proceedings Volume 5852, Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics; (2005) https://doi.org/10.1117/12.621911
Event: Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics, 2004, -, Singapore

Abstract

Micropipette aspiration is one of the most widely used techniques for measuring the mechanical properties of single cells. The homogeneous linear elastic half-space model has been frequently applied to characterize the micropipette aspiration of chondrocytes and endothelial cells. However, the linear elastic model is limited to small deformation and the half-space assumption is frequently invalidated when moderately large micropipettes are used. In this work, the linear elastic constitutive model is extended to the neo-Hookean constitutive model and the geometry is simulated more realistically by considering the cell as a sphere. The large-deformation contact mechanics problem is solved using dimensionless axisymmetric finite element analysis. The effects of pipette diameter and fillet radius on the cellular rheological behaviour are also systematically studied. Based on the finite element simulation, empirical relationships have been derived for the direct interpretation of the elastic mechanical parameters from the micropipette aspiration experiments. Micropipette aspiration of late-stage malaria-infected red blood cells (schizonts) is conducted. The infected cells are found to exhibit elastic solid behavior in contrast to the liquid drop behavior of healthy red blood cells. The apparent shear modulus of the schizonts, interpreted from the elastic solid model, is found to be 119±62 Pa.

Citation Download Citation

E. H. Zhou, C. T. Lim, K. S. W. Tan, and Ser Tong Quek "Finite element modeling of the micropipette aspiration of malaria-infected red blood cells", Proc. SPIE 5852, Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics, (12 April 2005); https://doi.org/10.1117/12.621911

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available