SELECTIVE PLACEMENT OF CARBON NANOTUBES VIA COULOMBIC ATTRACTION OF OPPOSITELY CHARGED CARBON NANOTUBES AND SELF-ASSEMBLED MONOLAYERS

摘要

A method of forming a structure having selectively placed carbon nanotubes, a method of making charged carbon nanotubes, a bi-functional precursor, and a structure having a high density carbon nanotube layer with minimal bundling. Carbon nanotubes are selectively placed on a substrate having two regions. The first region has an isoelectric point exceeding the second region's isoelectric point. The substrate is immersed in a solution of a bi-functional precursor having anchoring and charged ends. The anchoring end bonds to the first region to form a self-assembled monolayer having a charged end. The substrate with charged monolayer is immersed in a solution of carbon nanotubes having an opposite charge to form a carbon nanotube layer on the self-assembled monolayer. The charged carbon nanotubes are made by functionalization or coating with an ionic surfactant.

主权项

1. A structure having a carbon nanotube (CNT) layer, the structure comprising:
a substrate having a first region and a second region; a self-assembled monolayer on the first region; and a CNT layer on the self-assembled monolayer; wherein the CNT layer has a density exceeding 1 CNT per square micron.