Elastic properties of liquid marbles

被引：52

作者：

Bormashenko, Edward ^{[1
,2
]}

Pogreb, Roman ^{[1
]}

Balter, Revital ^{[2
,3
]}

Aharoni, Hadas ^{[2
]}

Bormashenko, Yelena ^{[1
,2
]}

Grynyov, Roman ^{[1
]}

Mashkevych, Leonid ^{[2
]}

Aurbach, Doron ^{[3
]}

Gendelman, Oleg ^{[4
]}

机构：

[1] Ariel Univ, Dept Phys, IL-40700 Ariel, Israel

[2] Ariel Univ, Chem Engn & Biotechnol Dept, IL-40700 Ariel, Israel

[3] Bar Ilan Univ, Dept Chem, IL-52900 Ramat Gan, Israel

[4] Technion Israel Inst Technol, Fac Mech Engn, IL-32000 Haifa, Israel

来源：

COLLOID AND POLYMER SCIENCE | 2015年 / 293卷 / 08期

关键词：

Liquid marbles; Colloidal particles; Coalescence; Collisions; Elastic shell; Scaling law; SURFACE-TENSION; WATER DROPLETS; PARTICLE RAFT; HERTZ THEORY; COLLISION; TRANSPORT; DROPS;

D O I：

10.1007/s00396-015-3627-3

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：

Liquid marbles are non-stick droplets coated with colloidal particles. Liquid marbles do not coalesce when pressed one to another or when colliding. The paper is devoted to the study of the quasi-elastic properties of liquid marbles under collisions. It was established that the contact time under collision is independent of the velocity of the cue marble. The liquid marble was modeled by a droplet coated by an elastic shell, representing the colloidal layer covering the marble. The elasticity of the shell is due to the capillary interaction between colloidal particles. The physical model of collisions is proposed. Pathways of viscous dissipation are discussed. Scaling laws describing the collision are derived. The proposed scaling laws governing the marbles' collisions were verified experimentally. The contact time of the collision scales as the square root of the marbles' volume as it occurs under bouncing of droplets. Pathways of viscous dissipation are discussed.

引用

页码：2157 / 2164

页数：8

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