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Issue 1, 2018
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Translationally invariant colloidal crystal templates

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Abstract

We show that dynamic, feed-back controlled optical traps, whose positions depend on the instantaneous local configuration of particles in a pre-determined way, can stabilise colloidal particles in finite lattices of any given symmetry. Unlike in a static template, the crystal so formed is invariant under uniform translations and retains all possible zero energy modes. We demonstrate this in silico by stabilising the unstable two-dimensional square lattice in a model soft solid with isotropic interactions.

Graphical abstract: Translationally invariant colloidal crystal templates

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Article information


Submitted
18 Sep 2017
Accepted
28 Nov 2017
First published
29 Nov 2017

Soft Matter, 2018,14, 104-111
Article type
Paper

Translationally invariant colloidal crystal templates

P. Popli, S. Ganguly and S. Sengupta, Soft Matter, 2018, 14, 104 DOI: 10.1039/C7SM01877K

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