Figure 3. Schematic of the experimental setup. Simultaneous acquisition of current and lateral force signals during the scan of vertically grown ZnO nanorods using an AFM probe. The torsional behaviour of the AFM probe was monitored by a laser reflecting from the AFM cantilever into the position-sensitive photodetector. The current signals originating from the ZnO nanorods were detected through the AFM probe and the external circuit with the current