How wireless recharging works but truly cordless future is still far away

To date, a major problem has been how little power is able to cross even short distances of a few centimeters between transmitter and receiver

Though the days of hardwired wall-mounted phones are ending and wireless internet connections are common at home and on the go, people are still dependent on cords to charge their mobile devices. My research, and that of others in the field, is working toward the vision of removing power cords by recharging batteries wirelessly.

Pioneering electrical engineer Nikola Tesla first imagined transmitting electricity through the air without wires in the 1890s. The principle is similar to how a radio signal gets from the radio station to your receiver – electricity is converted