Imagine a future where neurological disorders are cured with a single injection into the top of your skull. That's the expectation placed on the shoulders of Charles Lieber, a Harvard chemist who has developed a groundbreaking technology that has the potential to change medicine. The process involves building a tiny fishing net out of conducting threads that can support microscopic sensors across its surface. It's so small that you can use a regular-sized but stronger needle to inject it via a tiny drill hole straight onto the brain. Then, this mesh begins to unfurl and sit on the top of your noggin, shifting around as your grey matter does normally.