marie-hélène le ny |
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photographist |
Carbon
is a very common element with which one can produce nanotubes
with a diameter of one nanometer and a length up to centimeter.
The nanotubes are in the form of soot in which they are entangled
and unusable. We therefore process them into aqueous solutions
with the help of surfactants. They form an ink and are much easier
to use. They can be dried to make films or mixed with various
chemicals to manufacture composite materials. For many years
our group has coagulated nanotubes in a polymer dissolved in
water, while stretching to make long fibers the size of a hair.
This filament can be wound and used for manufacturing fabrics
or other advanced materials.
A
potential application of nanotubes is the production of
transparent conductive films - for photovoltaic cells or touch
screens for example. Today, the transparent electrode is made
from indium, a very |
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Cécile Zakri Professor of Chemistry, University of Bordeaux |
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