Surface plasma treatment (Ar/CF₄) decreases biofouling on polycarbonate surfaces

The purpose of this study was to examine the impact hydrophobicity, surface chemistry and topography on bacterial microalgal adhesion. To end, effects plasma treatments (argon (Ar) tetrafluorocarbon (CF 4 )) polycarbonate substrates bioadhesion were investigated in vitro. Surfaces characterized by goniometry, atomic force microscopy X-ray photoelectron spectroscopy. Two marine strains, a hydrophobic Pseudoalteromonas sp. 5M6 hydrophilic Paracoccus 4M6, two microalgae (Cylindrotheca closterium Porphyridium purpureum) involved biofouling selected. Their adhesion onto observed quantified using confocal laser scanning microscopy–microfluidic flow cells. It demonstrated that combination three parameters – namely, energy, fluorination nanotopography significantly decreases microorganisms out four (Pseudoalteromonas 5M6, C. P. purpureum), whereas one parameter its own is insufficient.