Kinetic roughening of aggregates of patchy colloids with strong and weak bonds
Departamento de Física, Faculdade de Ciências, Universidade de Lisboa - P-1749-016 Lisboa, Portugal and Centro de Física Teórica e Computacional, Universidade de Lisboa - P-1749-016 Lisboa, Portugal
Received: 8 July 2014
Accepted: 18 August 2014
We study the irreversible aggregation of films of patchy spherical colloids with directional and selective interactions. We report a crossover of the interfacial roughening from the Kardar-Parisi-Zhang (KPZ) to the KPZ with quenched disorder (KPZQ) universality class when the difference between the strong and weak bonds is sufficiently large. We calculate the critical exponents and identify the crossover between the two regimes.
PACS: 68.35.Ct – Interface structure and roughness / 05.40.-a – Fluctuation phenomena, random processes, noise, and Brownian motion / 82.70.Dd – Colloids
© EPLA, 2014