The Use of Terahertz Spectroscopy as a Sensitive Probe in Discriminating the Electronic Properties of Structurally Similar Multi-Walled Carbon Nanotubes
ABSTRACT The use of terahertz spectroscopy as a sensitive probe in discriminating the electronic properties of multi-walled carbon nanotubes. We show that terahertz spectroscopy can definitively distinguish between two MWCNTs (see figure), which have commercial applications in a number of advanced materials. Other techniques do not provide a sensitive discrimination of the measured properties. We rationalize this observation by considering the dielectric nature of the materials and the relationship of this to their structural differences (as observed by TEM).