  In this Letter, we investigate the strain-induced band-gap modulation of both
armchair and zigzag graphane nanoribbons based on the first-principles
calculations. Within the elastic range, the band gap changes linearly with the
uniaxial strain, where the band-gap of graphane nanoribbonsis more sensitive to
compressive than tensile deformation. The band-gap deformation mainly
originates from the shift of valence band edge of graphane nanoribbons under
stain. Our results imply the great potential of graphane nanoribbons in the
pressure sensor and optical electronics applications.

Materials Science