Delayed Buckling and Guided Folding of Inhomogeneous Capsules

被引：133

作者：

Datta, Sujit S. ^{[1
]}

Kim, Shin-Hyun ^{[2
,3
]}

Paulose, Jayson ^{[2
]}

Abbaspourrad, Alireza ^{[2
]}

Nelson, David R. ^{[1
]}

Weitz, David A. ^{[1
,2
]}

机构：

[1] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

[2] Harvard Sch Engn & Appl Sci, Cambridge, MA 02138 USA

[3] Korea Adv Inst Sci & Technol, Dept Chem & Biomol Engn, Taejon 305701, South Korea

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 109卷 / 13期

基金：

美国国家科学基金会;

关键词：

SPHERICAL-SHELLS; MECHANICS; LOAD;

D O I：

10.1103/PhysRevLett.109.134302

中图分类号：

O4 [物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Colloidal capsules can sustain an external osmotic pressure; however, for a sufficiently large pressure, they will ultimately buckle. This process can be strongly influenced by structural inhomogeneities in the capsule shells. We explore how the time delay before the onset of buckling decreases as the shells are made more inhomogeneous; this behavior can be quantitatively understood by coupling shell theory with Darcy's law. In addition, we show that the shell inhomogeneity can dramatically change the folding pathway taken by a capsule after it buckles.

引用

页数：5

共 39 条

[1]

[Anonymous], 2009, Theory of Elasticity

[2]

SYMMETRIC AND NONSYMMETRIC BUCKLING OF FINITELY DEFORMED ECCENTRICALLY STIFFENED SHELLS OF REVOLUTION [J].