It is already possible to power smallelectronicdevices, such as wireless sensors installed in buildings and industrial machinery, using a dedicated microwave transmitter nearby.
Eventually, Wang and his team were able to tinker with their system to the point where it could produce enough current to charge smallelectronicdevices.
An increasingly popular way people are trying to coax more exercise into their lives is by tracking their movements using a bevy of smallelectronicdevices from companies like Fitbit Inc.
These postage-stamp-sized bits of flash memory are quickly turning into a major force for consumer electronicdevices that need lots of storage in a small space.