They can and do, and are an important part of intermolecular interactions (van der Waal's forces have a substantial Casimir effect component).
Matter just ordinarily isn't structured to produce a strong version of an interesting effect - which when you get down to it is essentially what all human technology is based on.
It's quite possible there are some weird molecular structures (if this paper is correct) which could also induce natural warp-field structures out of their crystal lattice.
Going down this route, it strikes me as more feasible to find lattice effects or nano-scale effects facilitating cold fusion than warp fields. After all fusion itself is at least provably existing, just difficult to arrange.
Matter just ordinarily isn't structured to produce a strong version of an interesting effect - which when you get down to it is essentially what all human technology is based on.
It's quite possible there are some weird molecular structures (if this paper is correct) which could also induce natural warp-field structures out of their crystal lattice.