Browse Publications Technical Papers 2005-01-2905
2005-07-11

The Use of Room Temperature Plasma to Produce and Enhance Engineered Fluid-Handling Surfaces 2005-01-2905

Orbital Technologies Corporation (ORBITEC) and the University of Wisconsin (UW) have demonstrated the feasibility of utilizing plasma manufacturing methods to functionalize fluid handling surfaces. Performance of hydrophilic coatings generated with both oxygen plasma and dichlorosilane plasma on aluminum (SiH2Cl2) substrates was demonstrated. Both give similar results, significantly decreasing contact angles and improving wicking ability of machined capillary grooves. Deposition of silver nanoparticles using plasma was also demonstrated and tested. Silver concentrations of 2% were obtained on hydrophilic-coated samples. Testing indicated that the silver-coated samples were biocidal against Listeria monocytogenes. Oxide-coated aluminum substrates were also shown to exhibit biocidal action against L. monocytogenes and a variety of other microorganisms.

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