Honey bees present a peculiar hairy structure that covers the surface of their body, which is able to transport large quantities of pollen particles for pollination purposes. Inspired by this natural phenomenon and to overcome the current problems associated with drug patches with passive delivery, the concept of a micropatterned surface featuring micropillars with defined spacing and height to mimic the hair of bees for the entrapment of a large quantity of microparticles was propose. Such substrates could be extended to diverse applications that require reversible immobilization of solid particulate objects. In particular, high drug content is required for obtaining more effective drug patches, enabling more sustained and targeted release of the drug.
Information Source: https://www.pnas.org/content/116/12/5405