I had a nice time this evening watching and listening to Radu Sporea talking about plastic electronics (= built on a plastic substrate). I work on rather abstract theoretical stuff, but I enjoy very much learning about physics research that is more directly aimed at creating new technologies. Radu's talk highlighted electronic devices that can be created on flexible plastic sheets. Perhaps the most obvious application is to mobile phone screens which can be flexible without breaking. I'm fortunate in not having ever cracked my mobile phone screen, but it was only earlier today that I sat on a train opposite someone with a cracked glass screen.