We recently learned about uBeam – the startup that uses piezoelectricity and ultrasound generators in order to wirelessly charge batteries across great distances. Well, looks like scientists from the Queen Mary University of London (QMUL) are looking to one-up uBeam's solution, by using a similar concept, only omitting the need for any chargers at all. Instead, the new tech gets its electrical charge from any sound that reaches the phone.It is based on a concept first presented by Korean scientists, 4 years ago. It involves the use of nanorods, made by zinc oxide materials (a.k.a nanowire). ...
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