Figure 1
Credit: Alan Stonebraker

Figure 1: (Top) A sketch of the system, which is a pair of 6×0.5×0.2 μm doubly clamped nanobeams with 400 nm separation. The beams were illuminated by an infrared laser focused to a spot of 10 μm and the reflected signal was detected. (Bottom) The effective potential for the slow coordinate q2 of the higher-frequency nanobeam for different values of the modulation frequency ωp; |q2| gives the scaled amplitude of the vibrations at frequency ωp/2, whereas the sign of q2 determines their phase.