Using classical density functional theory, the liquid crystal (LC)-mediated interaction between a cylindrical nanoparticle and a structured substrate is studied. The surface is structured by cutting a rectangular groove into the surface. In the absence of the nanoparticle, a range of defect structures is formed in the vicinity of the groove. By varying the groove width and depth, the LC-mediated interaction changes from repulsive to attractive. This interaction is strongest when the groove is of comparable size to the nanoparticle. For narrow grooves the nanoparticle is attracted to the center of the groove, while for wider grooves there is a free energy minimum near the sidewalls.
Skip Nav Destination
Research Article| September 17 2008
Effect of substrate geometry on liquid-crystal-mediated nanocylinder-substrate interactions
David L. Cheung;
David L. Cheung, Michael P. Allen; Effect of substrate geometry on liquid-crystal-mediated nanocylinder-substrate interactions. J. Chem. Phys. 21 September 2008; 129 (11): 114706. https://doi.org/10.1063/1.2977968
Download citation file: