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Materials 2016, 9(3), 138; doi:10.3390/ma9030138

Transition Behaviors of Configurations of Colloidal Particles at a Curved Oil-Water Interface

Department of Chemical Engineering, Kyung Hee University, Yongin, Gyeonggi-do 17104, Korea
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Academic Editor: To Ngai
Received: 28 January 2016 / Revised: 24 February 2016 / Accepted: 24 February 2016 / Published: 26 February 2016
(This article belongs to the Special Issue Pickering Emulsion and Derived Materials)
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Abstract

We studied the transition behaviors of colloidal arrangements confined at a centro-symmetrically curved oil-water interface. We found that assemblies composed of several colloidal particles at the curved interface exhibit at least two unique patterns that can be attributed to two factors: heterogeneity of single-colloid self-potential and assembly kinetics. The presence of the two assembly structures indicates that an essential energy barrier between the two structures exists and that one of the structures is kinetically stable. This energy barrier can be overcome via external stimuli (e.g., convection and an optical force), leading to dynamic transitions of the assembly patterns. View Full-Text
Keywords: colloids; fluid-fluid interfaces; assemblies; interactions; heterogeneity; self-potentials colloids; fluid-fluid interfaces; assemblies; interactions; heterogeneity; self-potentials
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Lee, M.; Xia, M.; Park, B.J. Transition Behaviors of Configurations of Colloidal Particles at a Curved Oil-Water Interface. Materials 2016, 9, 138.

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