Short-range gravity and Lorentz violation
  Comparatively few searches have been performed for violations of local Lorentz invariance in the pure-gravity sector. We show that tests of short-range gravity are sensitive to a broad class of unconstrained and novel signals that depend on the experimental geometry and on sidereal time. 
Quentin G. Bailey, Alan Kostelecky, and Rui Xu
gr-qc hep-ph