PICTURE-MESSAGING phones may be about to get a whole lot more intrusive. Thanks to a novel and ultra-cheap micromotor technology, cellphone cameras should soon be able to zoom and focus with the same precision as the autofocusing lenses used in expensive stills cameras.
1 Limited of Cambridge, UK, has found a novel way to make a thin sheet of a piezoelectric ceramic material work like a motor. It can move whatever is placed on top of it, or it can be rolled into a cylinder to grasp and move a miniature camera lens.
At the moment, the lenses in picture…
