title: Kinetic control of the coverage of oil droplets by DNA-functionalized colloids.
abstract: 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.
authors.affiliation: Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, UK.
authors.forename: Darshana
authors.identifier: 0000-0001-9625-8433
authors.initials: D
authors.lastname: Joshi
authors.affiliation: Center for Soft Matter Research and Department of Physics, New York University, New York, NY 10003, USA.
authors.forename: Dylan
authors.initials: D
authors.lastname: Bargteil
authors.affiliation: Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, UK.
authors.forename: Alessio
authors.identifier: 0000-0002-1794-9250
authors.initials: A
authors.lastname: Caciagli
authors.affiliation: Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, UK.
authors.forename: Jerome
authors.identifier: 0000-0002-7509-9637
authors.initials: J
authors.lastname: Burelbach
authors.affiliation: Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, UK.
authors.forename: Zhongyang
authors.identifier: 0000-0002-4091-8399
authors.initials: Z
authors.lastname: Xing
authors.affiliation: Departamento de Física, Faculdade de Ciências, and Centro de Física Teórica e Computacional, Universidade de Lisboa, Campo Grande, P-1749-016 Lisboa, Portugal.
authors.forename: André S
authors.initials: AS
authors.lastname: Nunes
authors.affiliation: Departamento de Física, Faculdade de Ciências, and Centro de Física Teórica e Computacional, Universidade de Lisboa, Campo Grande, P-1749-016 Lisboa, Portugal.
authors.forename: Diogo E P
authors.initials: DE
authors.lastname: Pinto
authors.affiliation: Departamento de Física, Faculdade de Ciências, and Centro de Física Teórica e Computacional, Universidade de Lisboa, Campo Grande, P-1749-016 Lisboa, Portugal.
authors.forename: Nuno A M
authors.identifier: 0000-0002-1677-6060
authors.initials: NA
authors.lastname: Araújo
authors.affiliation: Center for Soft Matter Research and Department of Physics, New York University, New York, NY 10003, USA.
authors.forename: Jasna
authors.initials: J
authors.lastname: Brujic
authors.affiliation: Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, UK.
authors.forename: Erika
authors.identifier: 0000-0003-2881-8157
authors.initials: E
authors.lastname: Eiser
mesh_terms: D000327:Adsorption; D003102:Colloids / Q000737:chemistry* / Q000378:metabolism; D004247:DNA / Q000737:chemistry* / Q000378:metabolism; D007700:Kinetics; D010316:Particle Size; D014867:Water / Q000737:chemistry*
chemical_list: D003102:Colloids; D014867:Water; D004247:DNA
keywords: DNA functionalization; Smart emulsions; colloidal aggregation; self-assembly