Enlarge ImageConceptual bridge. This tiny silicon beam links light to vibration, potentially opening the way to technologies that combine optics and mechanics.Credit: M. Eichenfield et al., Nature, Advanced Online Publication (18 October 2009) A tiny ladderlike beam of silicon converts light into vibrations and vice versa with extremely high efficiency, physicists report. That may seem like an esoteric result, but the finding could open the way to new physics and someday serve as a key element in optical microcircuits akin to the electronic microcircuits in computer chips. Although the effect is ordinarily very small, light exerts forces on the...