Large area stunning/incapacitation technology. Using lasers and other energy beams to incapacitate or kill people in a large area.
A breakthrough in this area where the weapon could bypass physical objects (sound, x-rays and other frequencies) and function without too many side effects for long duration would allow for unimpeded operations in the effected area. It would be particularly powerful when combined with thought scanning technology.
Desktop Particle generators, accelerators, Laser Fusion, Neutron generators etc…
Wikipedia on particle accelerators
Plasma wakefield particle acceleration.
Civilian laser fusion
Desktop fusion advance
Nuclear fusion advance
Desktop nuclear fusion demonstrated
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