Abstract
Distinguishing between carbon nanotubes (CNTs) according to their individual electronicproperties is of significant importance for developing CNT-based electronics and devices. Inthis study, selective removal of metallic CNTs from CNT mixtures on silicon substrates wasinvestigated using controlled laser irradiation. Free electron movement and eddy currentsare induced within the metallic CNTs by the strong electric field and opticalnear-field effects caused by the laser irradiation. Selective heating of metallic CNTsin air results in selective removal of metallic CNTs when the laser fluence andwavelength are properly selected. Through this process, metallic nanotubes aresuccessfully removed from the CNT mixtures. This technique provides an efficientsingle-step approach for selective removal of metallic CNTs from CNT mixtures.
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