Everyone faces a problem with the declining charge of battery in necessary circumstances. Even though accessories like power banks helped to solve the issue, still there is a void that couldn’t be filled. What if we could charge with the Electro Magnetic Waves(EMW) around?

We are surrounded by EMW of various frequencies. If we could utilize them to charge the battery, it would be helpful. Mobile phones are equipped with oscillators which generate EMW, so if we use the oscillators for the vice-versa i.e.., if we design a set of oscillators that would respond to the signals around, we could transduce the response to our desired form(ex: vibration to magnetic etc.).