Air-directed attachment of coccoid bacteria to the surface of superhydrophobic lotus-like titanium

Truong, V, Webb, H, Fadeeva, E, Chichkov, B, Wu, A, Lamb, R, Wang, J, Crawford, R and Ivanova, E 2012, 'Air-directed attachment of coccoid bacteria to the surface of superhydrophobic lotus-like titanium', Biofouling, vol. 28, no. 6, pp. 539-550.


Document type: Journal Article
Collection: Journal Articles

Title Air-directed attachment of coccoid bacteria to the surface of superhydrophobic lotus-like titanium
Author(s) Truong, V
Webb, H
Fadeeva, E
Chichkov, B
Wu, A
Lamb, R
Wang, J
Crawford, R
Ivanova, E
Year 2012
Journal name Biofouling
Volume number 28
Issue number 6
Start page 539
End page 550
Total pages 12
Publisher Taylor and Francis
Abstract Superhydrophobic titanium surfaces fabricated by femtosecond laser ablation to mimic the structure of lotus leaves were assessed for their ability to retain coccoid bacteria. Staphylococcus aureus CIP 65.8T, S. aureus ATCC 25923, S. epidermidis ATCC 14990T and Planococcus maritimus KMM 3738 were retained by the surface, to varying degrees. However, each strain was found to preferentially attach to the crevices located between the microscale surface features. The upper regions of the microscale features remained essentially cell-free. It was hypothesised that air entrapped by the topographical features inhibited contact between the cells and the titanium substratum. Synchrotron SAXS revealed that even after immersion for 50 min, nano-sized air bubbles covered 45% of the titanium surface. After 1 h the number of cells of S. aureus CIP 65.8T attached to the lotus-like titanium increased to 1.27 × 105mm-2, coinciding with the replacement of trapped air by the incubation medium.
Subject Physical Chemistry not elsewhere classified
Microbiology not elsewhere classified
Materials Engineering not elsewhere classified
Keyword(s) coccoid bacteria
femtosecond laser ablation
microtopography and nanotopography
superhydrophobic titanium surfaces
DOI - identifier 10.1080/08927014.2012.694426
Copyright notice © 2012 Copyright Taylor and Francis Group, LLC.
ISSN 0892-7014
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