These phase transition motive architectures all suffer from the same issues of not enough precision with repeatable positioning, very low speed, and limited con

These phase transition motive architectures all suffer from the same issues of not enough precision with repeatable positioning, very low speed, and limited control over the shaping of force/torque curve. The only practical example are wax motors: https://en.wikipedia.org/wiki/Wax_motor https://en.wikipedia.org/wiki/Wax_motor This entire article is simply bad university lab PR.