Perpendicular Superlattice Growth of Hydrophobic Gold Nanorods on Patterned Silicon Substrates via Evaporation-Induced Self-Assembling

Abstract

A simple and efficient route has been reported for the perpendicular superlattice self-assembling of hydrophobic gold nanorods (NRs) based on solvent evaporation. The combination of top-down surface patterning and bottom-up material assembling was used for area-selective gold NR superlattices. The superlattice preferably deposited with a perpendicular orientation of gold NRs on the hydrophobic stripe region in the patterned substrate. The superlattice occupied broad areas up to several square millimeters and possessed an uppermost surface of hexagonally close-packed NR monolayers.