Patent ID: 8097141
Filing Date: 2012-01-17
Classification: B03C,B82Y,C01B,Y10S

Abstract:
1. A method for separating a first fraction of single wall carbon nanotubes and a second fraction of single wall carbon nanotubes, the method comprising: laminarly flowing a solution comprising the first fraction and the second fraction of single wall carbon nanotubes and an ionic surfactant into a dielectrophoresis chamber; providing, within the dielectrophoresis chamber, at least one DC electrode and at least two AC electrodes, wherein the DC electrode and the AC electrodes are positioned on opposing walls of the dielectrophoresis chamber; applying a DC voltage to said DC electrode with a negative electrode bias, in combination with application of an AC voltage through the AC electrodes, within the dielectrophoresis chamber; and collecting a first eluent from the dielectrophoresis chamber, wherein the first eluent comprises the first fraction of single wall carbon nanotubes and is depleted of the second fraction of single wall carbon nanotubes, wherein the first fraction and the second fraction differ by conductivity and at least one of diameter, length, and combinations thereof.