Presently, almost half a dozen wireless charging technologies are in use, with the purpose of discarding cables to smartphones, laptops, vehicles, and even kitchen appliances. Wireless charging is becoming technologically attractive in different industries because it might enable small IoT (internet of things) to become more mobile by getting power from a certain distance. In fact, in 2017, an MIT physics professor Marin Soljačić managed to transfer electricity at a distance of a couple of meters; however, he achieved a power transfer of 40% efficiency, which indicated that 60% of the power was lost in translation. The same year Professor Soljačić set up WiTricity in order to commercialize the technology. It is worth noting that the 40% power-transfer efficiency has dramatically increased since then. WiTricity's primary market is the automobile industry. According to WiTricity CEO Alex Gruzen, a number of electric car manufacturers are expected to announce using wireless charging for their cars and other motorized vehicles. WiTricity technology would enable electric cars to be powered by simply parking on a large charging pad.
