  We study edge fluctuations of a flat colloidal membrane comprised of a
monolayer of aligned filamentous viruses. Experiments reveal that a peak in the
spectrum of the in-plane edge fluctuations arises for sufficiently strong virus
chirality. Accounting for internal liquid crystalline degrees of freedom by the
length, curvature, and geodesic torsion of the edge, we calculate the spectrum
of the edge fluctuations. The theory quantitatively describes the experimental
data, demonstrating that chirality couples in-plane and out-of-plane edge
fluctuations to produce the peak.
