Resistance to bacteria is one of the most important parameters when using medical devices and implants. Until recently, special biocidal components and antibiotics were used for this purpose. A new step in this direction was the study of scientists from the University of California.
The team led by Professor Albert Yee managed to create a coating based on synthetic polymers, resistant to the effects of microbes. His prototype was the wings of a cicada, covered with microscopic nanoscale spikes.
The spines themselves are rather “dumb”. The bacterium caught on the wings, under the influence of gravity, “falls through” in the spaces between the spines, breaks and after a while dies. Using this hint of nature , Albert Yee and his team created a coating for an artificial cornea resistant to various bacteria, including Escherichia coli and Salmonella.
However, against the golden staphylococcus, the “cicada” coating proved to be powerless. And again scientists turned to nature for help. As it turned out, the dragonfly wings have a similar, but stronger, bacterial resistant structure. Currently, researchers are working to recreate this effect with respect to polymethylmethacrylate, high-quality amorphous thermoplastic.