In the lab-fixed frame, the opposing pitches of enantiomers in the same RNEMD region create opposite thrusts that are perpendicular to the xz-rotation plane, allowing separation and resolution of the enantiomers along the y-axis. As mentioned in above, this property is analogous to a screw with left-hand threads and its mirror image (right-hand threads) in which the medium is rotating around the screws. To measure the average separation of one enantiomer in the y-direction induced by shear vorticity, we computed a mean y displacement,