Data (available upon request) accompanying the manuscript titled "Hydrodynamic and Frictional Modulation of Deformations in Switchable Colloidal Crystallites", authored by Young Ki Lee, Xiaoguai Li, Paris Perdikaris, John C. Crocker, Celia Reina, and Talid Sinno.
Displacive transformations in colloidal crystals may offer a new pathway for increasing the diversity of accessible configurations without the need to engineer particle shape or interaction complexity. To date, binary crystals comprised of spherically symmetric particles at specific size ratios have been formed that exhibit floppiness and facile routes for transformation into more rigid structures that are otherwise not accessible by direct nucleation and growth. There is evidence that such transformations, at least at the micron-scale, are kinetically influenced by concomitant solvent motion that effectively induces hydrodynamic correlations between particles. Here, we study quantitatively the impact of such interactions on the transformation of binary bcc-CsCl analogue crystals into close-packed configurations. We first employ Principal Component Analysis to stratify the explorations of a bcc-CsCl crystallite into orthogonal directions according to displacement. We then compute diffusion coefficients along the different directions using several dynamical models and find that hydrodynamic correlations, depending on their range, can either enhance or dampen collective particle motions. These two distinct effects work synergistically to bias crystallite deformations towards a subset of the available outcomes.
@article{lee2020hydrodynamic,
title={Hydrodynamic and frictional modulation of deformations in switchable colloidal crystallites},
author={Lee, Young Ki and Li, Xiaoguai and Perdikaris, Paris and Crocker, John C and Reina, Celia and Sinno, Talid},
journal={Proceedings of the National Academy of Sciences},
year={2020},
publisher={National Acad Sciences}
}