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Updated: Jul 13, 2026

Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems
Published on: April 28, 2016
Near-static dielectric polarization of individual carbon nanotubes
1Department of Chemistry and Biochemistry, Ohio University, Athens, Ohio 45701, USA.
Abstract:
Low-frequency dielectric responses of carbon nanotubes are important for their manipulation, separation, and electronic applications. Here we report the first experimental measurement of near-dc polarization of individual carbon nanotubes by using modified scanning force microscopy techniques. The transverse polarizability of carbon nanotubes is equivalent to solid cylindrical media with a dielectric constant of about 10, irrespective of tube diameter and chirality. The longitudinal polarization is also observed and used to distinguish metallic from semiconducting nanotubes.
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