Fig. 2: Speed of the VSe2 nanosheet actuator.
From: Photoacoustic 2D actuator via femtosecond pulsed laser action on van der Waals interfaces
a Relationship between light-actuated moving speed of the nanosheet at Ep = 10 nJ and the laser repetition frequency: experimental points and their linear fit. b Corresponding moving curves (green lines) in nearly 10 s at 200 Hz, 500 Hz, 1 kHz, and 2 kHz. The moving distance increases with the increasing repetition frequency. c Relationship between light-actuated moving speed of the nanosheet at frep = 1 kHz and the laser pulse energy: experimental points and their linear fit. d Corresponding trajectory curves (orange lines) in nearly 10 s at 9 nJ, 10.5 nJ, 11.5 nJ, and 12.5 nJ. The moving distance increases with the increasing laser energy.
