This concept has already taken flight and is being used in commercial applications TED Talks and also in a Sony prototype. Imagine the world where all the wires just go off, all the clutter will be cleared. If you have no idea of this, watch this video first.
How it works:
Basically, power is fed to a ring made of magnet wire. When electricity is passed from this loop, it creates Electro magnetic field. Inductive Coupling uses magnetic fields to transfer power. There is a primary coil, which generates a magnetic field. Then there is another secondary coil which is composed of a capacitor and a coil, the capacitor creates a resonant circuit with the primary and secondary coils. A smaller loop is attached to the system that you want to power and picked up from the base unit. The concept can be tailored for your purposes such as an inductive charging pad. We’d like to see a hack that incorporates the base into a mouse pad (or the desk itself) and the receiver into the body of a wireless mouse.
You can Read the DIY Tutorial here.