Fig. 2
From: Light programmable micro/nanomotors with optically tunable in-phase electric polarization
Light-responsive alignment of Si nanowires. a Alignment rate versus AC frequency of silicon nanowires (undoped; length, 10 μm; diameter, 500 nm) in the dim condition and under 532-nm laser illumination (error bars are defined as s.d., source data are provided in a Source Data file). b Intensity effect of laser on alignment rate versus AC frequency. The corresponding anisotropy of polarizabilities are shown on the right axes, and the eye-guiding lines in (a) and (b) show trends. c Cyclic switch between parallel and transverse alignment of a single nanowire with on/off of a 532 nm laser. The E-field direction is defined as π/2, and its transverse direction is defined as 0. d Toggling of a single nanowire in response to a light signal encoded by Morse code (top), and the corresponding interpreted words “HELLO WORLD” from the mechanical motions of the nanowire (bottom).
