Contact
    Start Publications Programming nanostructured soft biological surfaces by atomic ...
    ←  Publication Finder
    Attension

    Programming nanostructured soft biological surfaces by atomic layer deposition

    Year: 2013

    Journal: Nanotechnology, 24, 245701, 20130926

    Authors: Imre Miklos Szilagyi, Georg Teucher, Emma Härkönen1, Elina Färm, Timo Hatanpää, Timur Nikitin, Leonid Khriachtchev, Markku Räsänen, Mikko Ritala, Markku Leskelä

    Organizations: Department of Chemistry, University of Helsinki, Helsinki, PO Box 55, FI-00014, Finland, Technical Analytical Chemistry Research Group of the Hungarian Academy of Sciences, Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Budapest, Szt. Gellert ter. 4., H-1111, Hungary, Chemnitz University of Technology, Faculty of Natural Sciences, 09107 Chemnitz, Reichenhainer Straße 70, Germany

    Here, we present the first successful attempt to programme the surface properties ofnanostructured soft biological tissues by atomic layer deposition (ALD). The nanopatternedsurface of lotus leaf was tuned by 3–125 nm TiO2 thin films. The lotus/TiO2 composites werestudied by SEM-EDX, XPS, Raman, TG-DTA, XRR, water contact angle and photocatalysismeasurements. While we could preserve the superhydrophobic feature of lotus, we managedto add a new property, i.e. photocatalytic activity. We also explored how surface passivationtreatments and various ALD precursors affect the stability of the sensitive soft biologicaltissues. As we were able to gradually change the number of nanopatterns of lotus, we gainednew insight into how the hollow organic nanotubes on the surface of lotus influence itssuperhydrophobic feature.