Printed inchworm robot makes self-assembly moves (w/ Video): This robot uses shape-memory polymers (SMPs) for the self-folding process. These are "smart" materials that can go from one state to another via a stimulus such as temperature change. With the SMPs, the inchworm robot is able to fold into desired shapes. Once it folds, a battery and motor are attached. With enough current, the team's robot was able to fold into its functional form with fold angle deviations within six degrees. The printed robot demonstrated locomotion at a speed of two millimeters per second.
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