We prepared hierarchically structured, superhydrophobic surfaces with dual- and triple-scale roughness via a layer-by-layer (LbL) particle deposition approach. The triple-scale structure was especially effective in achieving low roll-off angles for small water droplets, and demonstrated much higher stability for the non-wetting Cassie state over the dual-scale structure, as experimentally verified by a compression test. The dual-/triple-scale structured, superhydrophobic surfaces exhibited significantly reduced protein adsorption (up to 90% decrease). Platelet adhesion and activation was completely suppressed on the triple-scale structured surface. The hierarchically structured surfaces were further rendered antimicrobial by covalently incorporating bacteria-killing moieties onto the surface.

Super-repellent antimicrobial surfaces

248th National Meeting (2014)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.