Reduction of bacterial adhesion on titanium-doped diamond-like carbon coatings

Ying-Yu Zhao (Lead / Corresponding author), Buyun Zhao, Xueju Su, Shuai Zhang, Su Wang, Robert Keatch, Qi Zhao (Lead / Corresponding author)

    Research output: Contribution to journalArticlepeer-review

    17 Citations (Scopus)
    251 Downloads (Pure)


    A range of titanium doped diamond like carbon (Ti-DLC) coatings with different Ti contents were prepared on stainless steel substrates using a plasma-enhanced chemical vapour deposition technique. It was found that both the electron donor surface energy and the surface roughness of the Ti-DLC coatings increased with increasing Ti contents in the coatings. Bacterial adhesion to the coatings was evaluated against Escherichia coli WT F1693 and Pseudomonas aeruginosa ATCC 33347. The experimental data showed that bacterial adhesion decreased with the increases of the Ti content, the electron donor surface energy and surface roughness of the coatings, while the bacterial removal percentage increased with the increases of these parameters. The Ti-DLC coatings reduced bacterial attachment by up to 75% and increased bacterial detachment from 15% to 45%, compared with stainless steel control.
    Original languageEnglish
    Pages (from-to)26-33
    Number of pages8
    Issue number1
    Early online date15 Jan 2018
    Publication statusPublished - Jan 2018


    • Bacterial adhesion
    • Biomaterials
    • Contact angle
    • DLC coatings
    • Surface energy
    • Coated Materials, Biocompatible/chemistry
    • Bacterial Adhesion/drug effects
    • Carbon/chemistry
    • Stainless Steel/chemistry
    • Titanium/chemistry
    • Escherichia coli/drug effects
    • Diamond/chemistry
    • Surface Properties
    • Equipment and Supplies/microbiology
    • Pseudomonas aeruginosa/drug effects

    ASJC Scopus subject areas

    • Applied Microbiology and Biotechnology
    • Water Science and Technology
    • Aquatic Science


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