Figure 7 Applications of the hair artificial muscles.(A) Sequential photos showing a heterochiral hair muscle based “sea cucumber” crawling on a barbed wire under water and ethanol actuation. (B) Movement of the wheel model caused by the actuation of the homochiral hair artificial muscle in response to water.(C) Actuation of a homochiral artificial muscle in response to water lifting a weight 10 times its own weight by 59% in 60 s.(D) Schematic illustration of the circuit diagram for the smart switch based on the actuation of the homochiral hair muscle by water.(E) Photos showing the hair muscle switching off the LED light after contacting water.