Hierarchical Structured Surfaces and Their Applications in Protective Coatings

This research describes a versatile method for the creation of multi-tier hierarchical structured surfaces, that seek to optimise conflicting surface effects, such as anti-viral/anti-microbial efficacy and hydrophobic (easy-clean) properties. This approach exploits the availability of surface-active ‘chemical functional’ groups whilst also manipulating surface micro- and nano-structure, to control the way the coating interacts with liquid droplets. Further to this, the methodology highlights a new and valuable route to mechanically robust, nano-structured surfaces which outperform control coatings over multiple abrasion cycles. The approach utilizes a simple spray application process to create the robust structured surfaces, doing so without the use of specialist equipment. Finally, this approach is presented as a potential route to ‘self-decontaminating surfaces’ that can capture and remove hazardous chemicals from surfaces.