Droplet motion driven by tensotaxis

被引：30

作者：

Bueno, Jesus ^{[1
]}

Bazilevs, Yuri ^{[2
]}

Juanes, Ruben ^{[3
]}

Gomez, Hector ^{[4
]}

机构：

[1] Univ A Coruna, Dept Metodos Matemat & Representac, Campus Elvia, La Coruna 15192, Spain

[2] Univ Calif San Diego, Dept Struct Engn, 9500 Gilman Dr, La Jolla, CA 92093 USA

[3] MIT, Dept Civil & Environm Engn, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[4] Purdue Univ, Sch Mech Engn, 585 Purdue Mall, W Lafayette, IN 47907 USA

来源：

EXTREME MECHANICS LETTERS | 2017年 / 13卷

基金：

欧洲研究理事会;

关键词：

Tensotaxis; Soft materials; Fluid-structure interaction (FSI); Complex fluids; Navier-Stokes-Korteweg equations (NSK); Isogeometric analysis (IGA); WETTABILITY ALTERATION; CONTACT-LINE; SIMULATION; WATER;

D O I：

10.1016/j.eml.2017.01.004

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

It is well documented that cells can migrate in response to gradients in stiffness (durotaxis) and gradients in strain (tensotaxis) in the underlying substrate. Understanding the potential physical mechanisms at play during this motion has motivated recent efforts to unravel the role of surface tension in the interaction between droplets and soft solids. Here, we present a multiphysics phase-field model of fluid-solid interaction, which allows us to isolate the effects of strain gradients-something difficult to achieve in experiments. Our high-fidelity numerical simulations in two and three dimensions elucidate the physics of tensotaxis, and show how localized forces in a soft substrate can be used to move and merge droplets deposited on it. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：10 / 16

页数：7

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