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Electrostatic capacitance of TiO2 nanowires in a porous alumina template

Lee, Jaeyoung and Choi, Jinsub and Lee, Jaekwang and Choi, Sang Kyo and Chun, Hee Dong (2005) Electrostatic capacitance of TiO2 nanowires in a porous alumina template. Nanotechnology, 16 (9). pp. 1449-1453. ISSN 0957-4484. http://resolver.caltech.edu/CaltechAUTHORS:LEEnanotech05

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Abstract

Titanium oxide (TiO2) nanowires were prepared for an electrolytic capacitor application by the automatic dipping technique using a porous alumina template. The automatic dipping technique allows us to exactly control the dipping rate so that we can obtain homogenous infiltration of nanowires in the porous alumina membrane, even though the solution is very acidic. From the TEM, SEM and XRD measurements, we confirmed that anatase phase TiO2 nanowires are highly infiltrated into the porous alumina template. In addition, the electrostatic capacitance of nanowires was measured and compared with a theoretical calculation using an effective thickness (delta e). We found that the effective thickness corresponds to the mean radius of nanowires and the experimental measurements were in good agreement with the calculations.


Item Type:Article
Additional Information:Copyright © Institute of Physics and IOP Publishing Limited 2005. Received 2 March 2005, in final form 18 April 2005. Published 29 June 2005.
Subject Keywords:SOL-GEL PROCESS; ELECTRODEPOSITION; NANOSTRUCTURES; ANODIZATION; ARRAYS; OXIDES
Record Number:CaltechAUTHORS:LEEnanotech05
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:LEEnanotech05
Alternative URL:http://dx.doi.org/10.1088/0957-4484/16/9/005
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:2989
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:10 May 2006
Last Modified:26 Dec 2012 08:52

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