Single-walled carbon nanotube probes for high-resolution nanostructure imaging

Stanislaus S. Wong(Harvard University), Adam T. Woolley(Harvard University), Teri W. Odom(Harvard University), Jin-Lin Huang(Harvard University), Philip Kim(Harvard University), Dmitri Vezenov(Harvard University), Charles M. Lieber(Harvard University)
Applied Physics Letters
December 7, 1998
10.1063/1.122798
Cited by 166

Abstract

Single-walled carbon nanotube (SWNT) tips have been used to image nanostructures with high resolution. Studies of gold nanocrystal standards showed that SWNT tips provide a significant improvement in lateral resolution with respect to multi-walled nanotube tips and microfabricated Si tips. The nanotube tips were also used to resolve substructure within SWNTs deposited on surfaces. These results suggest that observed 1.5 nm high structures can correspond to several SWNTs aligned in parallel. In addition, SWNT tips exhibited superior resolution compared to conventional tips when imaging biological nanostructures, such as double-stranded DNA. The potential and future challenges of SWNT tips are discussed.

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