25,171 research outputs found
Quasi-Langmuir-Blodgett Thin Film Deposition of Carbon Nanotubes
The handling and manipulation of carbon nanotubes continues to be a challenge
to those interested in the application potential of these promising materials.
To this end, we have developed a method to deposit pure nanotube films over
large flat areas on substrates of arbitrary composition. The method bears some
resemblance to the Langmuir-Blodgett deposition method used to lay down thin
organic layers. We show that this redeposition technique causes no major
changes in the films' microstructure and that they retain the electronic
properties of as-deposited film laid down on an alumina membrane.Comment: 3 pages, 3 figures, submitted Journal of Applied Physic
The longitudinal KAM-cocycle of a magnetic flow
Let be a closed oriented surface of negative Gaussian curvature and let
be a non-exact 2-form. Let be a small positive real number.
We show that the longitudinal KAM-cocycle of the magnetic flow given by \la
\Omega is a coboundary if and only if the Gaussian curvature is constant and
is a constant multiple of the area form
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