Flexible, stretchable electronicsbr br Computing devices do not have to be rigid and flat, but could be delightfully twisty, says John Rogers, professor of material sciencebr br Subscribe NOW to The Economist: br Get more The Economistbr Follow us: Like us: View photos: br The Economist videos give authoritative insight and opinion on international news, politics, business, finance, science, technology and the connections between them.