3.1.2 Chirality-Selective Fabrication of Carbon Nanotube Gas sensor Using Spin-Column Chromatography and Dielectrophoresis

J. Suehiro, M. Fujioka, H. Watanabe, H. Komure & M. Nakano
Carbon nanotube (CNT) gas sensors have received considerable attention because of their utstanding properties. The CNT sensor performance, however, has not been optimized because of the coexistence of CNTs with different electronic properties depending on their chirality. This study demonstrates a chirality-selective fabrication method of the CNT gas sensor using spin-column chromatography and dielectrophoresis (DEP). After passing through three spin-columns, pristine CNTs were separated into three fractions, which contained CNTs with different chiralities. The CNTs...