The influence of picosecond laser generated periodic structures on bacterial behaviour

The formation of a biofilm is preceded by bacterial retention and proliferation on surface. Biofilm development surfaces can cause numerous issues in terms fouling transmission contamination. design fabrication that prevent may provide potential solution to reduce surfaces. An EdgeWave, Nd:YVO4 picosecond laser was used generate two periodic surface topographies 316L stainless steel with without fluoroalkylsilane (FAS) treatment. These were characterised using Optical Laser Microscopy (OLM), Scanning Electron (SEM), contact angle measurements, Energy Dispersive X-ray Spectroscopy (EDX). wettability Escherichia coli bacteria the generated analysed over one month. Without chemical treatment, increasing time month, results showed treated decreased as subsequent retention. However, control recorded lowest number adhered bacteria. After reducing tension, all which presented higher lower tension components (CA = 132°, ?Giwi ?85.26, ?s 13.81, ?sLW 13.37, ?s? 0.13) minimal played an important role reduced fouling.