Bacterial attachment response to nanostructured titanium surfaces

Vi Khanh Truong, James Y. Wang, Wang Shurui, Francois Malherbe, Christopher C. Berndt, Russell J. Crawford, Elena P. Ivanova

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

The effect of sub-nanometric surface roughness of Ti thin films surfaces on the attachment of two human pathogenic bacteria, Staphylococcus aureus CIP 65.8T and Pseudomonas aeruginosa ATCC 9027, was studied. A magnetron sputtering thin film deposition system was used to control the titanium thin film thicknesses of 3 nm, 12 nm and 150 nm on silicon wafers with corresponding surface roughness parameters of Rq 0.14 nm, 0.38 nm and 5.55 nm (1 m 1 m scanning area). Analysis of bacterial retention profiles showed that the bacteria responded differently changes in the Ra and Rq (Ti thin film) surface roughness parameters of a less than 1 nm, with up to 2-3 times: more cells being retained on the surface, and elevated levels of extracellular polymeric substances being secreted on the Ti thin films, in particular on the surfaces with 0.14 nm (Rq) roughness.

Original languageEnglish
Title of host publicationICONN 2010 - Proceedings of the 2010 International Conference on Nanoscience and Nanotechnology
Pages253-256
Number of pages4
DOIs
Publication statusPublished - 2010
Externally publishedYes
Event2010 3rd International Conference on Nanoscience and Nanotechnology, ICONN 2010 - Sydney, NSW, Australia
Duration: 22 Feb 201026 Feb 2010

Publication series

NameICONN 2010 - Proceedings of the 2010 International Conference on Nanoscience and Nanotechnology

Conference

Conference2010 3rd International Conference on Nanoscience and Nanotechnology, ICONN 2010
Country/TerritoryAustralia
CitySydney, NSW
Period22/02/1026/02/10

Keywords

  • Bacterial attachment
  • Sub-nanometric surface morphology
  • Titanium

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