Kinetic control of the coverage of oil droplets by DNA-functionalized colloids

被引：50

作者：

Joshi, Darshana ^{[1
]}

Bargteil, Dylan ^{[2
,3
]}

Caciagli, Alessio ^{[1
]}

Burelbach, Jerome ^{[1
]}

Xing, Zhongyang ^{[1
]}

Nunes, Andre S. ^{[4
,5
]}

Pinto, Diogo E. P. ^{[4
,5
]}

Araujo, Nuno A. M. ^{[4
,5
]}

Brujic, Jasna ^{[2
,3
]}

Eiser, Erika ^{[1
]}

机构：

[1] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[2] NYU, Ctr Soft Matter Res, New York, NY 10003 USA

[3] NYU, Dept Phys, New York, NY 10003 USA

[4] Univ Lisbon, Dept Fis, Fac Ciencias, Campo Grande, P-1749016 Lisbon, Portugal

[5] Univ Lisbon, Ctr Fis Teor & Computac, Campo Grande, P-1749016 Lisbon, Portugal

来源：

SCIENCE ADVANCES | 2016年 / 2卷 / 08期

基金：

美国国家科学基金会;

关键词：

DEPLETION ATTRACTION; PHASE; EMULSIONS; MEMBRANES; GLYCOL);

D O I：

10.1126/sciadv.1600881

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We report a study of reversible adsorption of DNA-coated colloids on complementary functionalized oil droplets. We show that it is possible to control the surface coverage of oil droplets using colloidal particles by exploiting the fact that, during slow adsorption, compositional arrest takes place well before structural arrest occurs. As a consequence, we can prepare colloid-coated oil droplets with a "frozen" degree of loading but with fully ergodic colloidal dynamics on the droplets. We illustrate the equilibrium nature of the adsorbed colloidal phase by exploring the quasi-two-dimensional phase behavior of the adsorbed colloids under the influence of depletion interactions and present simulations of a simple model that illustrates the nature of the compositional arrest and the structural ergodicity.

引用

页数：9

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