![](/images/graphics-bg.png)
Axisymmetric Contact Problem for a Flattened Cell: Contributions of Substrate Effect and Cell Thickness to the Determination of Viscoelastic Properties by Using AFM Indentation
Joint Authors
Zhu, Xinyao
Liu, Lanjiao
Wang, Zuobin
Liu, X.
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-12-20
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Information Technology and Computer Science
Abstract EN
Nanoindentation technology has proven to be an effective method to investigate the viscoelastic properties of biological cells.
The experimental data obtained by nanoindentation are frequently interpreted by Hertz contact model.
However, in order to validate Hertz contact model, some studies assume that cells have infinite thickness which does not necessarily represent the real situation.
In this study, a rigorous contact model based upon linear elasticity is developed for the interpretation of indentation tests of flattened cells.
The cell, normally bonded to the Petri dish, is initially treated as an elastic layer of finite thickness perfectly fixed to a rigid substrate.
The theory of linear elasticity is utilized to solve this contact issue and then the solutions are extended to viscoelastic situation which is regarded as a good indicator for mechanical properties of biological cells.
To test the present model, AFM-based creep test has been conducted on living human hepatocellular carcinoma cell (SMMC-7721 cell) and its fullerenol-treated counterpart.
The results indicate that the present model could not only describe very well the creep behavior of SMMC-7721 cells, but also curb overestimation of the mechanical properties due to substrate effect.
American Psychological Association (APA)
Zhu, Xinyao& Liu, Lanjiao& Wang, Zuobin& Liu, X.. 2017. Axisymmetric Contact Problem for a Flattened Cell: Contributions of Substrate Effect and Cell Thickness to the Determination of Viscoelastic Properties by Using AFM Indentation. Scanning،Vol. 2017, no. 2017, pp.1-11.
https://search.emarefa.net/detail/BIM-1197973
Modern Language Association (MLA)
Zhu, Xinyao…[et al.]. Axisymmetric Contact Problem for a Flattened Cell: Contributions of Substrate Effect and Cell Thickness to the Determination of Viscoelastic Properties by Using AFM Indentation. Scanning No. 2017 (2017), pp.1-11.
https://search.emarefa.net/detail/BIM-1197973
American Medical Association (AMA)
Zhu, Xinyao& Liu, Lanjiao& Wang, Zuobin& Liu, X.. Axisymmetric Contact Problem for a Flattened Cell: Contributions of Substrate Effect and Cell Thickness to the Determination of Viscoelastic Properties by Using AFM Indentation. Scanning. 2017. Vol. 2017, no. 2017, pp.1-11.
https://search.emarefa.net/detail/BIM-1197973
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1197973