Title: Directed Self‐Assembly Pathways of Active Colloidal Clusters

Abstract

Abstract Despite the mounting interest in synthetic active particles, too little is known about their assembly into higher‐order clusters. Here, mixing bare silica particles with Janus particles that are self‐propelled in electric fields, we assemble rotating chiral clusters of various sorts, their structures consisting of active particles wrapped around central “hub” particles. These clusters self‐assemble from the competition between standard energetic interactions and the need to be stable as the clusters rotate when the energy source is turned on, and fall apart when the energy input is off. This allows one to guide the formation of intended clusters, as the final structure depends notably on the sequence of steps in which the clusters form.

Authors:

Zhang, Jie ^[1]; Yan, Jing ^[1]; Granick, Steve ^[2]

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+ Show Author Affiliations

1. Department of Materials Science and Engineering University of Illinois Urbana IL 61801 USA
2. Department of Materials Science and Engineering University of Illinois Urbana IL 61801 USA, IBS Center for Soft and Living Matter UNIST Ulsan 689-798 South Korea

Publication Date:

Thu Mar 24 00:00:00 EDT 2016

Sponsoring Org.:

USDOE

OSTI Identifier:

1401191

Grant/Contract Number:  

FG02-07ER46471

Resource Type:

Publisher's Accepted Manuscript

Journal Name:

Angewandte Chemie

Additional Journal Information:

Journal Name: Angewandte Chemie Journal Volume: 128 Journal Issue: 17; Journal ID: ISSN 0044-8249

Publisher:

Wiley Blackwell (John Wiley & Sons)

Country of Publication:

Germany

Language:

English