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Bianchi E, Likos CN, Kahl G. Tunable assembly of heterogeneously charged colloids. Nano Lett. 2014;14(6):3412-8doi: 10.1021/nl500934v.
Bianchi, E., Likos, C. N., & Kahl, G. (2014). Tunable assembly of heterogeneously charged colloids. Nano letters, 14(6), 3412-8. https://doi.org/10.1021/nl500934v
Bianchi, Emanuela, et al. "Tunable assembly of heterogeneously charged colloids." Nano letters vol. 14,6 (2014): 3412-8. doi: https://doi.org/10.1021/nl500934v
Bianchi E, Likos CN, Kahl G. Tunable assembly of heterogeneously charged colloids. Nano Lett. 2014 Jun 11;14(6):3412-8. doi: 10.1021/nl500934v. Epub 2014 May 27. PMID: 24842542; PMCID: PMC4055618.
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Nano Lett. 2014 Jun 11;14(6):3412-8. doi: 10.1021/nl500934v. Epub 2014 May 27.

Tunable assembly of heterogeneously charged colloids.

Nano letters

Emanuela Bianchi, Christos N Likos, Gerhard Kahl

Affiliations

  1. Institut für Theoretische Physik and Center for Computational Materials Science (CMS), Technische Universität Wien , Wiedner Hauptstraße 8-10, A-1040 Wien, Austria.

PMID: 24842542 PMCID: PMC4055618 DOI: 10.1021/nl500934v

Abstract

The self-assembly of colloidal particles is a route to designed materials production that combines high flexibility, cost effectiveness, and the opportunity to create ordered structures at length scales ranging from nano- to micrometers. For many practical applications in electronics, photovoltaics, and biomimetic material synthesis, ordered mono- and bilayers are often needed. Here we present a novel and simple way to tune via external parameters the ordering of heterogeneously charged colloids into quasi two-dimensional structures. Depending on the charges of the underlying substrate and of the particles, a rich and versatile assembly scenario takes place, resulting from the complex interplay between directional attractive and repulsive particle-particle and particle-substrate interactions. Upon subtle variations of the relative charge of the system components, emerging via pH modification, reversible changes either from extended aggregates to a monomeric phase or from triangular to square domains are observed.

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