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Proceedings of the National Academy of Sciences of Belarus. Physical-technical series

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Structural and mechanical properties of platelets measurements on air by force spectroscopy

Abstract

Results of study of mechanical properties of cells depend essentially on a method of their preparation and measurement conditions for determining these properties. Determination of modulus of elasticity is performed by processing the data of indentation using the most suitable mathematical model. The most frequently used model is the one by Hertz. The paper presents the results of investigations of the elastic properties of the pre-fixed with glutaraldehyde, and air-dried platelets of healthy young people. The elastic moduli were determined by nanoindentation curves obtained by atomic force spectroscopy. Analysis of the results of measurements carried out both with Hertz model and taking into account the adhesion forces according to the model of Johnson-Kendall-Roberts (JKR) is made. Determined average values of elastic modulus and surface density of adhesion energy and histograms showing frequency distributions of the moduli of elasticity of different values are presented.

About the Authors

A. A. Mohammed Salem
Belarusian National Technical University
Belarus


N. S. Kuzhel
A. V. Luikov Heat and Masss Transfer Institute of the National Academy of Sciences of Belarus
Belarus


A. A. Makhaniok
A. V. Luikov Heat and Masss Transfer Institute of the National Academy of Sciences of Belarus
Belarus


S. A. Chizhik
A. V. Luikov Heat and Masss Transfer Institute of the National Academy of Sciences of Belarus
Belarus


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ISSN 1561-8358 (Print)
ISSN 2524-244X (Online)