Experimental Status of Gravitational-Strength Forces in the   Sub-Centimeter Regime
  We review the experimental constraints on additional macroscopic Yukawa forces for interaction ranges below 1 cm., and summarize several theoretical predictions of new forces in this region. An experiment using 1 kHz mechanical oscillators as test masses should be sensitive to much of the parameter space covered by the predictions. 
Joshua C. Long, Hilton W. Chan, and John C. Price