The nematode C. elegans as a complex viscoelastic fluid

被引：6

作者：

Backholm, Matilda ^{[1
,2
]}

Ryu, William S. ^{[3
,4
]}

Dalnoki-Veress, Kari ^{[1
,2
,5
]}

机构：

[1] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada

[2] McMaster Univ, Brockhouse Inst Mat Res, Hamilton, ON L8S 4M1, Canada

[3] Univ Toronto, Dept Phys, Toronto, ON, Canada

[4] Univ Toronto, Donnelly Ctr, Toronto, ON, Canada

[5] PSL Res Univ, ESPCI ParisTech, UMR CNRS Gulliver 7083, PCT Lab, Paris, France

来源：

EUROPEAN PHYSICAL JOURNAL E | 2015年 / 38卷 / 05期

基金：

加拿大自然科学与工程研究理事会;

关键词：

SINGLE-CELL RESPONSE; CAENORHABDITIS-ELEGANS; LIVING CELLS; LOCOMOTION; GAIT; COLLAGEN; MODULATION; DETACHMENT; MECHANICS; STIFFNESS;

D O I：

10.1140/epje/i2015-15036-1

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The viscoelastic material properties of the model organism C. elegans were probed with a micropipette deflection technique and modelled with the standard linear solid model. Dynamic relaxation measurements were performed on the millimetric nematode to investigate its viscous characteristics in detail. We show that the internal properties of C. elegans can not be fully described by a simple Newtonian fluid. Instead, a power-law fluid model was implemented and shown to be in excellent agreement with experimental results. The nematode exhibits shear thinning properties and its complex fluid characteristics were quantified. The bending-rate dependence of the internal damping coefficient of C. elegans could affect its gait modulation in different external environments.

引用

页数：5

共 38 条

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