Sol-gel conversion actuator


An actuator that uses the transition between the sol (liquid) state and the gel (solid) state.

A sol-gel conversion actuator can work in a similar way to living things. For example, if electrodes are put on small particle of sodium polyacrylate gel in electrolytic solution and a voltage is applied, the particle repeatedly changes its shape. They can be connected in series, sealed in a thin pipe and given with multiple legs, to make a microrobot that moves in one direction that looks like a centipede. Another application being conceived is a crawler microrobot that automatically moves through a thin pipe.


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