No schoolboy has missed the comparison between gravity and magnetism. Certainly it didn't take long for science fiction to jump onto the idea of electro-gravitic energy.
This is one area where science has had difficulty catching up to science fiction, however.
Since ferromagnetic materials can generate and respond to magnetic energy, I'm inclined to think that certain elements, when excited in specific ways, may be able to generate gravitic energy.
What it would take to get the atomic elements lined up and lasing gravity waves is another question. Perhaps an ordinary laser is doing the job of lining up the atoms, but we need to step up the energy input to the atomic structure to get the atomic response, as opposed to merely an electronic one.
Pounding "Dilithium" or whatever, with cosmic ray energy, or Beta rays, for example, might do it, but who has made this experimental setup?
Atomic nucei have many modes of vibration. Electrons can only bounce. It could be that a particular mode of vibration, of a particular class of atomic nuclei, does produce the effect we want to develop.
Other than thermally, how does one excite an atomic nucleus? I am intuitively convinced the secret would lie in that, because I don't think there's anything we haven't done to electrons.
all of our current experiments center around the E-M spectrum. It is everything we can experience using our senses, but what we are now finding out is that there may be other aspects of the Universe that we are completely missing. We are completely ignorant of anything outside of 4-D space/time. This view is changing.
If an interaction between fundamental forces in any of these other dimensions can trigger a scalar effect that translates back to a 4-D phenomena, then we could find all kinds of neat things previously thought impossible to be possible.
Including hyperluminary transportation without violating General Relativities prohibitions. This isn't so much a way of finding a "new" energy source, but a way to get the current energy sources to act in new ways. If you can sheild a mass using a 11-D gravitational field effect, then you are cutting its inertia. This new inertia value would take the place of the 'M' value in the E=MC2 equation. You'd be moving a stated mass, with a lower intertial value, faster than light speed for a given volume of energy. You still need to expend energy, possibly a lot of it, but you wouldn't lose the Time.
This also wouldn't allow you to travel backwards in time. Time would remain linear for the target vehicle. If you traveled 2 hours at 4x light speed, and then came back at the same speed, you would have been gone 4 hours and traveled 8 light hours worth of distance relative to your starting point.