Advance research, on current existing conditions, and generally are Govt.(military) or Industrial advance development and are sponsored to teaching institute..
"The basics of wireless power involve the transmission of energy from a transmitter to a receiver via an oscillating magnetic field. To achieve this, Direct Current (DC) supplied by a power source, is converted into high frequency Alternating Current (AC) by specially designed electronics built into the transmitter.
Is it possible for wireless charging?The term “wireless charging” usually refers to inductive charging. This technology uses a charging station that creates an alternating magnetic field. A device with the proper induction coil will receive energy from that field when it is placed nearby, making it receive power without a physical connection."