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A viable way to tailor carbon nanomaterials by irradiation-induced transformations

Authors: R. Caudillo, H.E. Troiani, M. Miki-Yoshida, M.A.L. Marques, A. Rubio, M.J. Yacaman

Ref.: Rad. Phys. Chem. 73, 334-339 (2005)

Abstract: ince the discovery of carbon nanotubes (CNT), transmission electron microscopy (TEM) has been the most important tool in their investigation. It is possible to use electron irradiation in a TEM to construct a single-walled carbon nanotube (SWCNT) from an amorphous carbon film. Here we show that such a synthesis method creates a large number of carbon ad-atoms, which after some critical amount of radiation act to restore the system by reconstructing the carbon film. The behaviour of the ad-atoms can be controlled by adjusting the current density in the microscope, suggesting that carbon nanomaterials can be tailored by electron irradiation.

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