Volume 85, Number 5, March 2009
|Number of page(s)||6|
|Section||Condensed Matter: Structural, Mechanical and Thermal Properties|
|Published online||20 March 2009|
Self-assembly of binary nanoparticle dispersions: From square arrays and stripe phases to colloidal corrals
Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México - Apdo. Postal 70-360, 04510 México, D.F., Mexico
Corresponding author: email@example.com
Accepted: 19 February 2009
The generation of nanoscale square and stripe patterns is of major technological importance since they are compatible with industry-standard electronic circuitry. Recently, a blend of diblock copolymer interacting via hydrogen bonding was shown to self-assemble in square arrays. Motivated by those experiments we study, using Monte Carlo simulations, the pattern formation in a two-dimensional binary mixture of colloidal particles interacting via isotropic core-corona potentials. We find a rich variety of patterns that can be grouped mainly in aggregates that self-assemble in regular square lattices or in alternate strips. Other morphologies observed include colloidal corrals that are potentially useful as surface templating agents. This work shows the unexpected versatility of this simple model to produce a variety of patterns with high technological potential.
PACS: 64.75.Yz – Self-assembly / 82.70.Dd – Colloids / 82.35.Jk – Copolymers, phase transitions, structure
© EPLA, 2009
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