Fig. 21
From: Carbon Nanotube Assembly and Integration for Applications
a Illustration of DGU separation of tubes coated with surfactant based on their diameter and metallicity. The near infrared absorption spectra of SWCNTs is also shown. Adapted from [166]. b Clear separation of SWCNTs by electronic type and the corresponding absorbance spectra for semiconducting SWCNTs (in red) and metallic SWCNTs (in blue) is shown. Adapted from [166]