A unique sequential cell-opening mechanism has inspired researchers at the University of New Hampshire to devise a new drug-delivery system. The system mimics the mechanism that allows cephalopods, such as squid, cuttlefish and octopus to change their skin colour. Additionally, the system might also be exploited perhaps more obviously to make color-changing materials for camouflage and other purposes. The researchers modified chiral geometry of two different cells to make a meta material that mimics the organisms' color-changing organs, their chromatophores. When loaded in one direction only, the two different cells (one large and one small) open sequentially one with a color-changing twist.
Cephalopod drug delivery