Imagine generating power to charge your smartphone as you munch your favourite chocolate pizza or by talking to your girlfriend. With the 'smart' chin strap the improbable is now possible. Canadian researchers have created a 'smart' chin strap that can harvest energy from jaw movements. In their study researchers from the Ecole de technologie superieure (ETS) in Montreal Canada created an energy harvesting chin strap made from a single layer of piezoelectric fiber composites (PFCs). They attached it to a pair of ear muffs using a pair of elastic side straps. To ensure maximum performance the chin strap was fitted
