Eur. Phys. J. E (2007) 22: 11-15
https://doi.org/10.1140/epje/e2007-00003-4

Regular Articles

Structure and fragmentation in colloidal artificial molecules and nuclei

Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA

^* e-mail: cjrx@lanl.gov

Received: 20 September 2006
Published online: 16 February 2007

Abstract

Motivated by recent experiments on colloidal systems with competing attractive and repulsive interactions, we simulate a two-dimensional system of colloids with competing interactions that can undergo fragmentation. In the absence of any other confining potential, the colloids can form stable clusters depending on the strength of the short range attractive term. By suddenly changing the strength of one of the interaction terms we find a rich variety of fragmentation behavior which is affected by the existence of “magic” cluster numbers. Such soft matter systems can be used to construct artificial nuclei.