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Generation of potential bactericidal surfaces from aluminum via anodization
(Laboratorio Nacional de Nanotecnología (LANOTEC) (Costa Rica), 2019) Paniagua, Sergio; Rojas-Gatjens, Esteban; Villalobos, Javier; Montes de Oca-Vásquez, Gabriela; Pereira, Reinaldo; Murillo, Luis Carlos; Jose-Roberto, Vega-Baudrit
Bactericidal nanostructured surfaces are found in nature, developed through millions of years of evolution. Gecko skin, dragonfly wings and cicada wings possess nanoscale spikes or pillars that are able to have bactericidal action through non-chemical bactericidal methods, via impalement2 or mechanical stress3 (Fig. 1). These mechanisms offer the advantage of being more difficult for bacteria to develop resistance compared to pharmaceutical alternatives.1 An important strategy to control the spread of disease is to maintain surfaces clean to prevent secondary infection. Many high touch areas in operating rooms, factories, kitchens, and bathrooms are made of aluminum (trays, door handles, poles, tables, etc.). An aluminum surface engineered to have nanopillars could be bactericidal by mechanical means, thereby helping with prevention of spread of diseases.