Joel Koplik, City College of New York: Nanoparticles at a liquid/vapor interface
Colloidal particles at an interface have numerous applications to emulsion and foam stability, self-assembly and material fabrication and processing. while their dynamics involves issues of drag and diffusion, heterogeneity and interfacial pinning. Furthermore, for nanoparticles whose size may be comparable to the width of the interface, continuum modeling may break down. We show how molecular dynamics simulations of atomically-resolved homogeneous and Janus nanoparticle systems can address these issues and provide an understanding of hydrodynamic drag variation and hysteretic phenomena in this situation.