It ain't nanoparticles but I find general fertilizer to be lacking. I use a mixture of infinite (to me) materials in cycle, willow tea, leaf litter in big drums over winter, banana peel and potato peel.
I think long term the best scenario is s to use byproducts of the daily produce to fertilize.
I'm all for technology but nothing beats simple preparation and patience for me. But it's a damn interesting concept and it needs to be figured out by brains bigger than mine long term.