Patent Number: 8,796,642

Title: Carbon nanotubes with fluorescent surfactant

Abstract: A fluorescent material may include a medium, carbon nanotubes dispersed in the medium, and a fluorescent surfactant. The fluorescent surfactant may be adsorbed to a surface of some of the carbon nanotubes in a concentration sufficient to make the material fluoresce in the presence of radiation. The material may be applied to a material and tested for fluorescence, electrical conductivity, or carbon nanotube structure.

Inventors: Boday; Dylan J. (Tucson, AZ), Kuczynski; Joseph (Rochester, MN), Wertz; Jason T. (Wappingers Falls, NY), Zhang; Jing (Poughkeepsie, NY)

Assignee: International Business Machines Corporation

International Classification: G01N 21/64 (20060101)

Expiration Date: 8/05/12018