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Self-assembly of two-dimensional colloidal clusters by tuning the hydrophobicity, composition, and packing geometry

Auriol, Melodie; Law, Adam D.; Auriol, Mélodie; Smith, Dean; Horozov, Tommy S.; Buzza, D. Martin A.

Authors

Melodie Auriol

Adam D. Law

Mélodie Auriol

Dean Smith

Abstract

We study the structure of binary monolayers of large (3 m diameter) very hydrophobic (A) and large (3 m diameter) hydrophilic (B) or small (1 m diameter) hydrophilic (C) silica particles at an octanewater interface. By tuning the composition and packing geometry of the mixed monolayer, we ?nd that a rich variety of two-dimensional hexagonal superlattices of mixed A=B or A=C clusters are formed, stabilized by short-ranged electrostatic induced dipole interactions. The cluster structures obtained are in excellent agreement with zero temperature calculations, indicating that the self-assembly process can be effectively controlled.

Journal Article Type Article
Publication Date Mar 25, 2013
Journal Physical Review Letters
Print ISSN 0031-9007
Electronic ISSN 1079-7114
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 110
Issue 13
Article Number 138301
Pages 0 - 0
Institution Citation Law, A. D., Auriol, M., Smith, D., Horozov, T. S., & Buzza, D. M. A. (2013). Self-assembly of two-dimensional colloidal clusters by tuning the hydrophobicity, composition, and packing geometry. Physical review letters, 110(13), 0 - 0. doi:10.1103/physrevlett.110.138301
DOI https://doi.org/10.1103/physrevlett.110.138301
Keywords General Physics and Astronomy