Artificial muscles made with
electroactive polymers simply don't hold up to the rigors of constant
shape-changing, but a new class of carbon nanotubes
may remedy this says Victor Pushparaj at the
Rensselaer Polytechnic Institute in Troy, New York.
Initial tests with a two-millimeter block containing
millions of vertically-aligned nanotubes
endured 500,000 cycles while maintaining its shape, and
electrical and mechanical properties.
The goal is to build the next generation of actuators for
robot arms and prosthetic limbs that will last longer and offer
smoother, more life-like motion.
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