What is the latest invention using the electromagnetics w/ electrical?

I'm a graduate of Computer Technologist, I used to work as a I.T. Specialist, it all about software. But now I used to research about the electromagnetics concepts.
I heared that there is a latest invention or new device that is using the elctromagnetics with electrical and communication. But I don't know what it is.
I'm purely in software part and now I'm studying Computer System Engineer, I hope someone could help me what device is it.