Drexel University Home Pagewww.drexel.edu DREXEL UNIVERSITY LIBRARIES HOMEPAGE >>

iDEA: Drexel E-repository and Archives > Drexel Academic Community > College of Engineering > Department of Materials Science and Engineering > Faculty Research and Publications (MSE) > 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

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)

Files in This Item:

File Description SizeFormat
2006042136.pdf409.75 kBAdobe PDFView/Open
View Statistics

Items in iDEA are protected by copyright, with all rights reserved, unless otherwise indicated.


Valid XHTML 1.0! iDEA Software Copyright © 2002-2010  Duraspace - Feedback