High-yield assembly of individual single-walled carbon nanotube tips for scanning probe microscopies

Jason H. Hafner, Chin Li Cheung, Tjerk H. Oosterkamp, Charles M. Lieber

Research output: Contribution to journalArticle

333 Citations (Scopus)

Abstract

The structural and mechanical properties of single-walled carbon nanotubes (SWNTs) make them ideal tips for scanning probe microscopies such as atomic force microscopy (AFM). However, the ideal nanotube probe, which corresponds to an individual SWNT, has been difficult to produce in high yield. To overcome this difficulty, a straightforward and easily implemented method that enables very high-yield fabrication of individual SWNT probes has been developed. This new method is based upon the observation that microfabricated tips can "pick up" vertically aligned SWNTs grown from planar substrate surfaces. Substrates with isolated, vertically aligned SWNT are first prepared by chemical vapor deposition and then imaged with commercial microfabricated silicon AFM tips. The silicon tips pick up individual SWNTs from the substrate during imaging to create well-aligned SWNT probes. The SWNT tips have been etched using a procedure that allows variation of the nanotube length with 2 nm control. Studies of gold nanocluster standards demonstrate that these individual SWNT tips are capable of high resolution and robust imaging in air and fluids, and thus these tips are expected to open up new opportunities in nanoscale science and technology.

Original languageEnglish (US)
Pages (from-to)745-746
Number of pages2
JournalJournal of Physical Chemistry B
Volume105
Issue number4
StatePublished - Feb 1 2001

Fingerprint

Scanning probe microscopy
Single-walled carbon nanotubes (SWCN)
assembly
carbon nanotubes
microscopy
scanning
probes
Silicon
Nanotubes
Atomic force microscopy
nanotubes
Substrates
atomic force microscopy
Imaging techniques
Nanoclusters
silicon
nanoclusters
Gold
Structural properties
Chemical vapor deposition

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

High-yield assembly of individual single-walled carbon nanotube tips for scanning probe microscopies. / Hafner, Jason H.; Cheung, Chin Li; Oosterkamp, Tjerk H.; Lieber, Charles M.

In: Journal of Physical Chemistry B, Vol. 105, No. 4, 01.02.2001, p. 745-746.

Research output: Contribution to journalArticle

Hafner, Jason H. ; Cheung, Chin Li ; Oosterkamp, Tjerk H. ; Lieber, Charles M. / High-yield assembly of individual single-walled carbon nanotube tips for scanning probe microscopies. In: Journal of Physical Chemistry B. 2001 ; Vol. 105, No. 4. pp. 745-746.
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