Credit: University of Bristol
A coil-powered robot fish designed by scientists at the University of Bristol could make underwater exploration more accessible.
The robot fish was fitted with a twisted and coiled polymer (TCP) to drive it forward, a light-weight low cost device that relies on temperature change to generate movement, which also limits its speed.
A TCP works by contracting like muscles when heated, converting the energy into mechanical motion. The TCP used in this work is warmed by Joule heating—the pass of current through an electrical conductor produces thermal energy and heats up the conductor. By minimizing …
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