Does anyone find the reporting horrible? It's like reading a press release with all the buzz words and jargon thrown in. "Dynamic Casimir effect" that produces a net force? Yeah, the net force is the opposing forces squeezing the two plates together from outside. It produces zero directional net force. I don't see how it can move an object in space.
As far as I am aware, dynamic casmir is achieved by moving a virtual mirror at relativistic speeds to create photons, so I am assuming that if the photons are preferentially directed, there would be a small net force in the opposite direction.