One of most promissing applications of carbon nanotubes (CNT)
is the use of nanoprobes in scanning probe microscopy (SPM), as Dai et al demonstrated
(Nature 384, 147, 1996). The unique topological,
chemical and mechanical features of CNT yield small robust probes
and manipulators. These can be utilized in a variety of systems
including dry semiconductor surfaces, liquids, and biological
molecules in solution.
We are currently working on fullerene based SPM tips both
experimentally and theoretically. Our interests iclude the basic
issues of (1) nanomechanics: i.e., the tensile strength,
compression, bending and buckling of CNT tips; (2)
functionalization of capped or open-end CNT tips by organic
molecules or metal atoms, and (3) the interactions of CNT tips
with probed atoms or molecules.
We will present our results obtained from both experiment and
simulation. We also will discuss the applications of fullerene
based SPM tips (single and multi wall nanotubes and nanocones) in
dry and wet systems.
Dr. Jie Han, NASA Ames Research Center, T27A-1, Moffett Field, CA
94035, ph: 415-604-4799, fax: 415-604-3957, email: email@example.com