Muscle actuation test
The actuation performance of both homochiral and heterochiral hair
artificial muscles with different diameters and different twist
densities were characterized under water. Then the actuated hair muscles
were put into ethanol for recovery. Digital camera was used to record
the video of the real-time actuation process. The tensile stroke of the
hair artificial muscles was calculated. In addition, both the homochiral
and heterochiral muscles were put into water and ethanol repeatedly for
100 times to test their reversibility. And the actuation performance of
both the homochiral and heterochiral hair muscles was investigated after
5 months to test their stability.