https://doi.org/10.1140/epjst/e2009-01013-y
Metastable contact angles and self-propelled drop movement on chemically heterogeneous surfaces by a mean-field lattice Boltzmann model
1
School of Engineering, Laurentian University, Sudbury, Ontario, P3E 2C6, Canada
2
National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing, 210094, China
3
Nanoscale Technology and Engineering Laboratory, Department of Mechanical Engineering, Schulich School of
Engineering, University of Calgary, Calgary, Alberta, T2N
2N4, Canada
Corresponding authors: jzhang@laurentian.ca baomingli@mail.njust.edu.cn daniel.kwok@ucalgary.ca
Contact angle behaviors on heterogeneous surfaces were studied by the mean-field free-energy lattice Boltzmann method. Our results suggest that the relation for contact angles on heterogeneous surfaces proposed by Israelachvili and Gee [Langmuir, 5, 288 (1989)] is in general not valid for the case examined. Droplet self-propelled movement on chemically patterned surfaces was also modeled by means of a local surface tension gradient.
© EDP Sciences, Springer-Verlag, 2009
