I think what they are looking for is something like a transistor, except that an EM field changes the capacitance between power handling terminals rather than t

I think what they are looking for is something like a transistor, except that an EM field changes the capacitance between power handling terminals rather than the resistance. So like a FET changes the resistance between the source and drain, a trancitor would change the capacitance between two terminals. This means it would only be useful for amplification of AC signals since DC would not pass. Whether such a material exists, I don't know. Found this, a "Varicap" seems to be a variable capacitance diode, maybe that could be a basis for a trancitor: https://en.wikipedia.org/wiki/Varicap https://en.wikipedia.org/wiki/Varicap Designing circuits with trancitor's would be similar to any AC circuit design. They wouldn't work for any DC applications though. Whether they would be any better or more efficient in any way, who knows? Is our understanding of physics good enough yet to predict things like this? The wording of the trancitor Wikipedia page is not very grammatical, which makes me wonder if trancitors are some kind of hoax.