Polarization-selective alignment of a carbon nanotube film by using femtosecond laser ablation
- Authors
- Choi, Soo Bong; Byeon, Clare Chisu; Park, Doo Jae; Jeong, Mun Seok
- Issue Date
- Feb-2016
- Publisher
- KOREAN PHYSICAL SOC
- Keywords
- Polarization; Carbon nanotubes; Laser ablation
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.68, no.2, pp.210 - 214
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY
- Volume
- 68
- Number
- 2
- Start Page
- 210
- End Page
- 214
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/155124
- DOI
- 10.3938/jkps.68.210
- ISSN
- 0374-4884
- Abstract
- We report on a considerable alignment of single-walled carbon nanotubes (SWCNTs) in randomly oriented bundles, by using a simple drop-and-dry method and irradiation with high-intensity femtosecond laser pulses. A remarkable third-harmonic generation was observed after irradiation with the laser pulses, whereas a narrow-band white-light continuum was generated in the as-prepared films. This observation, combined with scanning electron microscopy images, confirmed the high degree of alignment of the SWCNTs. In contrast to the pulsed irradiation of carbon soot, the power-dependent laser irradiation of a highly-purified SWCNT film show polarization-dependent ablation of individual nanotubes caused by polarization-dependent absorption. Raman spectroscopy results confirmed the presence of fractured nanotubes caused by the ablation processes. Polarization-resolved absorption spectroscopy results revealed that the aligned SWCNT film had potential usage in optical polarizers.
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