Synthesis and Variable Temperature Electrical Conductivity Studies of Highly Ordered TiO2 Nanotubes
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| dc.contributor.author |
Ramanathan, Shriram
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| dc.contributor.author |
Asmatulu, Ramazan |
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| dc.contributor.author |
Bell, David C. |
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| dc.contributor.author |
Karthikeyan, Annamalai |
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| dc.contributor.author |
Aziz, Michael
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| dc.date.accessioned |
2009-04-15T19:43:09Z |
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| dc.date.issued |
2009 |
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| dc.identifier.citation |
Asmatulu, Ramaazan, Annamalai Karthikeyan, David C. Bell, Shriram Ramanathan, and Michael J. Aziz. 2009. Synthesis and variable temperature electrical conductivity studies of highly ordered TiO2 nanotubes. Journal of Materials Science 44(17): 4613-4616. |
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| dc.identifier.issn |
0022-2461 |
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| dc.identifier.uri |
http://nrs.harvard.edu/urn-3:HUL.InstRepos:2795734 |
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| dc.description.abstract |
Rafts of aligned, high aspect ratio TiO<sub>2</sub> nanotubes were fabricated by an electrochemical anodization method and their axial electrical conductivities were determined over the temperature range 225-400 °C. Length, outer diameter and wall thickness of the nanotubes were approximately 60-80 µm, 160 nm and 30 nm, respectively. Transmission electron microscopy studies confirmed that the TiO<sub>2</sub> nanotubes were initially amorphous, and became polycrystalline anatase after heat treatment attemperatures as low as 250 °C in air. The activation energy for conductivity over the temperature range 250 - 350 °C was found to be 0.87 eV. The conductivity values are comparable to those of nanocrystalline and nanoporous anatase thin films reported in literature. |
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| dc.description.sponsorship |
Engineering and Applied Sciences |
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| dc.language.iso |
en_US |
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| dc.publisher |
Springer Verlag |
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| dc.relation.isversionof |
doi: 10.1007/s10853-009-3703-5 |
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| dash.license |
OAP |
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| dc.subject |
electrical conductivity |
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| dc.subject |
electrochemical anodization of Ti |
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| dc.subject |
TiO2 nanotubes |
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| dc.title |
Synthesis and Variable Temperature Electrical Conductivity Studies of Highly Ordered TiO2 Nanotubes |
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| dc.relation.journal |
Journal of Materials Science |
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| dash.depositing.author |
Aziz, Michael
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|
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FAS Scholarly Articles [5171]
Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University
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