title: Interface stability, interface fluctuations, and the Gibbs-Thomson relationship in motility-induced phase separations.
abstract: Minimal models of self-propelled particles with short-range volume exclusion interactions have been shown to exhibit the signatures of phase separation. Here I show that the observed interfacial stability and fluctuations in motility-induced phase separations (MIPS) can be explained by modeling the microscopic dynamics of the active particles in the interfacial region. In addition, I demonstrate the validity of the Gibbs-Thomson relationship in MIPS, which provides a functional relationship between the size of a condensed drop and its surrounding vapor concentration. As a result, the late-stage coarsening dynamics of MIPS at vanishing supersaturation follows the classic Lifshitz-Slyozov scaling law.
authors.affiliation: Department of Bioengineering, Imperial College London, South Kensington Campus, London SW7 2AZ, UK. c.lee@imperial.ac.uk.
authors.forename: Chiu Fan
authors.initials: CF
authors.lastname: Lee