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<p>The multifactorial investigation of nanosecond laser-textured Ti6Al4V for anti-adhesive characteristics is inadequate. The present work investigated the adhesion of <i>S. aureus</i>&#xa0;and&#xa0;<i>E. coli</i>&#xa0;on a nanosecond Nd:YAG laser (1064&#xa0;nm) textured Ti6Al4V surfaces. Cross-grooves with 2&#xa0;µm microchannels with increased Ti2p<sub>3/2</sub> Ti<sup>4+</sup> and Ti2p<sub>1/2</sub> Ti<sup>4+</sup> concentrations exhibit 99.3% and 82.2% reduction in growth of E. coli and S. aureus respectively, relative to untreated samples. Furthermore, the deep groove sample renders 99.9% reduction in growth of <i>E. coli</i> relative to untreated sample. <i>S. aureus</i> adhesion was governed by TiO<sub>2</sub> layer &amp; topography, whereas <i>E. coli</i> adhesion was influenced by wettability and the surface roughness of the TiO<sub>2</sub> layer. <i>S. aureus</i> adhered at valleys between the grooves whereas <i>E. coli</i> cells aligned across the ridges. The study reveals the potential of ns-laser for tailoring surface properties to achieve an ideal implant surface.</p> Graphical abstract <p></p>

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Surface modification by nanosecond laser texturing imparts anti-adhesive characteristics to implant materials

  • 期刊论文

  • 发表日期：

    2025年6月2日

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  • Neelesh Sirdeshmukh,
  • Ganesh Dongre,
  • Snehal Kulkarni,
  • Jyutika Rajwade

摘要

The multifactorial investigation of nanosecond laser-textured Ti6Al4V for anti-adhesive characteristics is inadequate. The present work investigated the adhesion of S. aureus and E. coli on a nanosecond Nd:YAG laser (1064 nm) textured Ti6Al4V surfaces. Cross-grooves with 2 µm microchannels with increased Ti2p3/2 Ti4+ and Ti2p1/2 Ti4+ concentrations exhibit 99.3% and 82.2% reduction in growth of E. coli and S. aureus respectively, relative to untreated samples. Furthermore, the deep groove sample renders 99.9% reduction in growth of E. coli relative to untreated sample. S. aureus adhesion was governed by TiO2 layer & topography, whereas E. coli adhesion was influenced by wettability and the surface roughness of the TiO2 layer. S. aureus adhered at valleys between the grooves whereas E. coli cells aligned across the ridges. The study reveals the potential of ns-laser for tailoring surface properties to achieve an ideal implant surface.

Graphical abstract