Nanoindentation study of the mechanical behavior of TiO2 nanotube arrays

Xu, Y.N., Liu, M.N., Wang, M.C., Oloyede, A., Bell, J.M., & Yan, C. (2015) Nanoindentation study of the mechanical behavior of TiO2 nanotube arrays. Journal of Applied Physics, 118(14), pp. 145301-1.

View at publisher


Titanium dioxide (TiO2) nanotube arrays are attracting increasing attention for use in solar cells, lithium-ion batteries, and biomedical implants. To take full advantage of their unique physical properties, such arrays need to maintain adequate mechanical integrity in applications. However, the mechanical performance of TiO2 nanotube arrays is not well understood. In this work, we investigate the deformation and failure of TiO2 nanotube arrays using the nanoindentation technique. We found that the load–displacement response of the arrays strongly depends on the indentation depth and indenter shape. Substrate-independent elastic modulus and hardness can be obtained when the indentation depth is less than 2.5% of the array height. The deformation mechanisms of TiO2 nanotube arrays by Berkovich and conical indenters are closely associated with the densification of TiO2 nanotubes under compression. A theoretical model for deformation of the arrays under a largeradius conical indenter is also proposed.

Impact and interest:

3 citations in Scopus
3 citations in Web of Science®
Search Google Scholar™

Citation counts are sourced monthly from Scopus and Web of Science® citation databases.

These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.

Citations counts from the Google Scholar™ indexing service can be viewed at the linked Google Scholar™ search.

Full-text downloads:

73 since deposited on 12 Oct 2015
48 in the past twelve months

Full-text downloads displays the total number of times this work’s files (e.g., a PDF) have been downloaded from QUT ePrints as well as the number of downloads in the previous 365 days. The count includes downloads for all files if a work has more than one.

ID Code: 88943
Item Type: Journal Article
Refereed: Yes
Keywords: Nanoindentation, TiO2 nanotube array, Densification, Mechanical property
DOI: 10.1063/1.4932213
ISSN: 1089-7550
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MATERIALS ENGINEERING (091200) > Ceramics (091201)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2015 AIP Publishing LLC
Deposited On: 12 Oct 2015 23:38
Last Modified: 13 Oct 2015 21:18

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page