Fig. 4: Photothermal actuation of PDA-AgNWs@SMAc with enhanced photothermal heat response and accelerated cooling response compared to B-SMAc. | npj Flexible Electronics

Fig. 4: Photothermal actuation of PDA-AgNWs@SMAc with enhanced photothermal heat response and accelerated cooling response compared to B-SMAc.

From: Scalable functionalized shape memory alloy fiber with synergistic effect for robotic hand and microrobot

Fig. 4

a Schematic diagram of the actuation test rig of SMAc. b The actuation strain at the frequency of 1 Hz. c Average actuation speed of the uncoated and the coated measured under natural cooling. d Variation of axial force over for uncoated and coated at different stretching lengths. e At the power density of 13.75 mW/mm2, the temperature transition of different coated samples from 30 °C heating to 60 °C, and then from 60 °C cooling to 30 °C. f Ashby plot of the ave. Actuation speed versus contractile stroke of the SMA-based actuators25,40,41,42,43.

Back to article page