The thing to bear in mind is that it is science FICTION. If you were describing actual scientific advances you’d be an inventor and the world would be a truly fabulous place, complete with jet packs, flying cars, and anti-matter engines. Or a smoldering cinder, slowing cooling in the deep freeze of space. Depending. The aim, therefor, is not viability but verisimilitude. Not necessarily plausibility, though that’s a bonus. Your gadgets need to pass without raising an eyebrow within the context of the world you’ve created, not of this one.
Technical jargon, or technical sounding jargon, is the primary tool in your verisimilitude chest. Engage in a bit of research, absorb the language of scientific journals. But keep the research wide rather than deep. It is easy to drown in the topic you’re investigating. You forget the aim – verisimilitude – and begin to despair because your essential piece of sci-fi hardware – the hook upon which your story hangs – appears implausible. Take a step back, breathe. Remember the goal. Look, if we science fiction consumers were that insistent upon rigid, peer-reviewed science backing the fiction then the shelves would be empty and television would consist of nothing but police procedurals and reality programming.
So learn your technobabble. And set the stage for your plot-necessary tech with throwaway descriptions of other context-appropriate future gadgetry. If such other wonders are commonplace then this key breakthrough shouldn’t threaten suspension of disbelief.