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Enhanced chemical shift of carbon nanotube from laser assisted gas incorporation
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View: Figures


Image of FIG. 1.
FIG. 1.

(Color online) (a) The schematic diagram of oblique focused laser beam to prune CNTs in the selected gaseous environment. [(b) and (c)] Cross-sectional SEM image and corresponding SPEM image. The inset of (b) shows magnified SEM image.

Image of FIG. 2.
FIG. 2.

(Color online) (a) Cross-sectional SPEM image of laser modified CNTs. The image is the intensity summation over 16 channels around C state. (b) C spectra taken along the a-b line in (a). The distance along the a-b line is the ordinate and the binding energy of the 16 channel represents the abscissa. The chemical shift of is observed between the laser-modified and sidewall region.

Image of FIG. 3.
FIG. 3.

(Color online) (a) Cross-sectional SPEM C image of CNTs for laser modification in vacuum. (b) Cross-sectional C mapping image of as-grown CNTs. (c) Photoelectron spectra of C state from as-grown area (1 and 2) and the area modified in vacuum (A, B, and C).

Image of FIG. 4.
FIG. 4.

(Color online) [(a) and (c)] C mapping images of CNTs treated by laser irradiation in nitrogen and oxygen environments, respectively. (b) Position-related C and N spectra as denoted in (a). (d) The comparison of C and O spectra after laser modification.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Enhanced chemical shift of carbon nanotube from laser assisted gas incorporation