Fig. 1
From: Light programmable micro/nanomotors with optically tunable in-phase electric polarization
a, b SEM images of the fabricated undoped silicon nanowires with 10-μm length and 500-nm diameter. a A single silicon nanowire. b Cross-section image of silicon nanowire arrays. c Schematic of experimental setup for switchable alignment of nanowires and rotation of micro stepper motors (relative position of each component is shown; the microelectrodes faces upward in the actual setup); (d) parallel microelectrodes for electro-alignment measurement; (e) and quadruple microelectrodes for actuation of the stepper motors.
