NanoBiomimetics looks to nature for inspiration for nanomaterial structures that have many beneficial qualities.
– Self-cleaning materials: The study of the nano surface structure of lotus leafs and water-striders (insects) has generated interest in materials that reduce contaminant build-up just in the way they are structured.
– Stickiness: gecko and spider feet are structured for reversible dry adhesion (vs. reversible wet adhesion, as seen in fly feet, or permanent wet adhesion, as seen in everyday tapes and glues). The structure of gecko feet is such that surface area is maximized to allow adhesion to many surface types.
Drag minimization: The lateral structure of shark skin (dermal denticles) reduces drag on the shark, allowing it to move more quickly and with less water disturbance. This nano-structure is the the inspiration for the fabric and design of the Speedo LZR racer swim suits (to which many of the record-breaking times were attributed during the 2008 Olympics).
Anti-reflectivity: The hexagonal structure of the moth eye has led to an interest in nano-faceted surfaces that would have similar anti-reflectivity effects. This structure is of particular interest for the manufacturers of computer screens.
In all cases, these dramatic effects are created with hierarchical structuring at all levels. Nature adapts form and structure to function while optimizing material usage.
Click the image for the full article.