Switching?
The article is behind a paywall, but the abstract doesn't indicate what is precisely meant by "switch". What they've done (and it is clever) is a state-stable mechanically sliding mechanism controlled by an electric field. Three questions beg to be answered:
[1] would this be suitable to be used as a current carrying switch (even at microsignal levels)?
[2] if so, what would its switching capacity be?
[3] given its scale, how sensitive would it be to interference?