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Guiding water into carbon nanopipes with the aid of bipolar electrochemistry
Please use this identifier to cite or link to this item:
http://hdl.handle.net/1860/1154
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| Title: | Guiding water into carbon nanopipes with the aid of bipolar electrochemistry |
| Authors: | Babu, Sundar
Ndungu, Patrick Gathura
Bradley, Jean-Claude
Rossi, Maria Pia
Gogotsi, Yury G. |
| Keywords: | Bipolar electrodeposition
Nanofluidics
Nanopipe
Polypyrrole
Water |
| Issue Date: | Jul-2005 |
| Publisher: | Springer-Verlag |
| Citation: | Microfluidics and Nanofluidics, 1(3): pp. 284-288. Retrieved September 19, 2006 from http://nano.materials.drexel.edu/publications.html. |
| Abstract: | The targeted bipolar electrodeposition of
polypyrrole was carried out onto the tips of hydrophilic
carbon nanopipes. By aligning an external electric field
relative to the nanopipes, the deposition of polypyrrole
onto selected ends could be achieved without physically
contacting the nanopipes. After deposition, carbon
nanopipes with both partially open and fully blocked tips
were found. Experiments conducted in an environmental
scanning electron microscope showed that water enters
the nanopipes through the tip with polypyrrole due to the
higher hydrophilicity of the polymer compared to the
tube walls. As a result, it was possible to guide the entry
of water from a specific end of the tube and fill the tube
from the selected side. Condensation experiments conducted
on nanopipes with polypyrrole on both tips shows
the difference in hydrophilicity of the nanopipes compared
to the polypyrrole. The ability to selectively control
the site of condensation and uptake of fluid by
carbon nanotubes or nanopipes is very important for the
development of nanotube-based nanofluidic devices. |
| URI: | http://hdl.handle.net/1860/1154 |
| Appears in Collections: | Faculty Research and Publications (MSE)
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