Patent ID: 7829139
Filing Date: 2010-11-09
Classification: B05D,B82Y

Abstract:
1. A method for making self-assembled nanoparticle wires, comprising: (1) at about ambient temperature and at or near atmospheric pressure, immersing a hydrophilic solid substrate at a non-horizontal angle into a suspension of nanoparticles in a solvent, the suspension having a negative meniscus, the immersion of the substrate forming a solid-liquid-air interface at the meniscus; (2) gradually exposing the immersed substrate to air by gradually removing the suspension, thereby causing deposition of the nanoparticles at a first location on the substrate at the meniscus, forming a first nanoparticle wire on the substrate; (3) after a first deposition time period, rapidly removing a portion of the suspension, thereby causing deposition to stop and then re-start at a second location on the substrate at the meniscus; (4) continuing to gradually expose the immersed substrate to air by gradually removing the suspension for a second deposition period, thereby forming a second nanoparticle wire on the substrate; and optionally (5) repeating steps (3) and (4) one or more times to form one or more successive nanoparticle wires on the substrate.