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arXiv · 1708.08845

Translationally invariant colloidal crystal templates

Pankaj Popli·Saswati Ganguly·Surajit Sengupta
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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 ${\it any}$ given symmetry. Unlike in a static template, the crystal so formed is translationally invariant and retains all possible zero energy modes. We demonstrate this ${\it in-silico}$ by stabilising the unstable two-dimensional ${\it square}$ lattice in a model soft solid with isotropic interactions.

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Pankaj Popli, Saswati Ganguly, Surajit Sengupta. 2017-08-29. Translationally invariant colloidal crystal templates. https://doi.org/10.1039/c7sm01877k

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