Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Depletion-Driven Crystallization of Cubic Colloids Sedimented on a Surface



Harold W. Hatch, William P. Krekelberg, Steven D Hudson, Vincent K. Shen


Cubic colloids, sedimented on a surface and immersed in a solution of depletant molecules, were modeled with a family of shapes which smoothly varies from squares to circles. Using Wang-Landau simulations with expanded ensembles, we observe the formation of rhombic lattices, square lattices, hexagonal lattices and a fluid phase. This systematic investigation includes locating transitions between all combinations of the three lattice structures upon changing the shape, and transitions between the fluid and crystal upon changing the depletant concentration. The rhombic lattice deforms smoothly between square-like and hexagonal-like angles, depending on both the shape and the depletant concentration. Our results on the effect of the deple- tant concentration, depletant size, and colloid shape to influence the stability of the fluid and the lattice structures may help guide experimental studies with recently synthesized cubic colloids.
Journal of Chemical Physics


self-assembly, colloids, computer simulation


Hatch, H. , Krekelberg, W. , , S. and Shen, V. (2016), Depletion-Driven Crystallization of Cubic Colloids Sedimented on a Surface, Journal of Chemical Physics, [online], (Accessed May 24, 2024)


If you have any questions about this publication or are having problems accessing it, please contact

Created May 19, 2016, Updated November 10, 2018