Possibility of Gravitational Tempering in Colloidal Epitaxy to Obtain a Perfect Crystal

TL;DR

This study uses Monte Carlo simulations to explore how different gravity strengths affect defect formation in colloidal crystals, proposing gravitational tempering as a method to produce near-perfect crystals.

Contribution

It demonstrates that moderate gravity can produce defect-free colloidal crystals, introducing gravitational tempering as a novel approach in colloidal epitaxy.

Findings

Crystals formed at moderate gravity are defect-free.

Higher gravity leads to significant defect formation.

Gravitational tempering can potentially produce perfect colloidal crystals.

Abstract

We have performed Monte Carlo simulations of hard spheres on a pattern under gravity. We have found that a crystal formed at a moderate gravity strength contains essentially no defects while one formed at a higher strength gravity contains a significant amount of defects. This result suggests the possibility of using gravitational-tempering in a colloidal epitaxy to reduce the number of defects in colloidal crystals. Moreover, we wish to emphasize the possibility to obtain a perfect crystal.