Selective growth of metallic single-walled carbon nanotubes via the application of high magnetic fields of 10 T

Issue title: 20th International Symposium on Applied Electromagnetics and Mechanics

Guest editors: Theodoros Theodoulidis, Christos Antonopoulos, Nikolaos Kantartzis, Ioannis Rekanos and Theodoros Zygiridis

Article type: Research Article

Authors: Hamasaki, Atom^a; | Furuse, Ayumi^a | Uchimura, Jin^a | Takashima, Yasumasa^a | Ozeki, Sumio^a

Affiliations: [a] Department of Chemistry, Faculty of Science, Shinshu University, Matsumoto, Japan

Correspondence: [*] Corresponding author: Atom Hamasaki, Department of Chemistry, Faculty of Science, Shinshu University, Matsumoto, Nagano 390-8621, Japan. E-mail: [email protected]

Abstract: The structure of carbon materials can be controlled using a magnetic field, enhancing their functional properties. Most of the magnetic-field effects on carbon material growth were found to originate from the magnetic-field orientation. However, we observed that the magnetic-field orientation did not affect the growth of single-walled carbon nanotubes (SWCNTs); instead, under a magnetic field of 10 T, the preferential growth of metallic SWCNTs (1-nm diameter) was observed using chemical vapor deposition and liquid decomposition, suggesting chirality selectivity. Raman and X-ray photoelectron spectra showed that the defect structure and oxygen content of SWCNTs increased with increasing magnetic-field intensity. Therefore, thin metallic nanotubes can be selectively grown by applying a high magnetic field in environments where nanotubes are relatively difficult to form.

Keywords: Single-walled carbon nanotubes, chirality, diameter, magnetic control, electrical properties

DOI: 10.3233/JAE-220186

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 71, no. S1, pp. S393-S401, 2023