Bloody repulsion

Materials with a superomniphobic surface that repels blood and other substances could improve medical implant and prosthetic technology by reducing the risk of rejection and perhaps even precluding the growth of bacterial films. Stents, catheters and other medical devices inserted or implanted into the body can suffer from rejection problems, adhesion and clot formation, which leads to problems for the patient. A new material comprising fluorinated nanotubes can be used to coat titanium and other substrates and endows them with the most non-stick of properties. The team has now fabricated and tested these surface coatings in the laboratory with the clinic awaiting for testing real medical devices.