Silk is being used to make electronics that stick to the brain. A far cry from fabric but doctors are hoping that using silk will help them explore parts of the brain that they weren’t previously able to. “This development heralds a new class of implantable devices, not just for the brain, but for many other tissues,” said neurologist Brian Litt of the University of Pennsylvania, in an interview with Wired.com. Engineers chose to use silk because it’s easily stretched and the material is super thin, making it easy to mould and work with, making for better brain-computer interfaces. BCI’s…