Conductance quantization in multiwalled carbon nanotubes
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Abstract
We present results of carbon nanotube conductance measurements. The experiments were performed
using an scanning probe microscope (SPM) system where a carbon nanotube fiber is connected
to the SPM tip and then lowered into a liquid mercury contact. Experiments were also performed using
a modified transmission electron microscope (TEM) specimen holder supplied with piezo and micrometer
positioning system. Thus the contacting process of the nanotubes with the mercury could be monitored
while simultaneously recording the conductance. These measurements and observations confirm previously
reported conductance quantization (Frank et al.: Science 280, 1744 (1998)) of the nanotubes while providing
additional details concerning the mercury nanotube contacts.We also report conductance versus voltage
characteristics of carbon nanotubes
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Date
1999
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