ABSTRACT
This chapter discusses the methods for producing solutions of single-walled nanotubes (SWNTs) that can be dispensed by commercial semiconductor coating systems to form mono-layers of nanotubes for use as sparse conducting networks. The manufacturability of electronic devices based on carbon nanotubes has traditionally depended on the ability to manipulate and control individual structures at the molecular level. Nantero has developed a procedure to produce semiconductor-electronic-grade SWNT solutions for creating monolayer conductive fabrics. To address the issues, Nantero has developed a proprietary process of purification, filtration, and solubilization of SWNTs into a semiconductor-grade solvent. Working with various semiconductor manufacturers, a set of criteria has been developed for the “qualification” of SWNT solutions as an acceptable material for use within a complementary metal oxide semiconductors foundry. A primary characterization of the process is the measurement of SWNT fabric sheet resistance using a 4-point probe.
