An Artificial Muscle with Lamellar Structure Based on a Nematic Triblock Copolymer


  • We thank P.-G. de Gennes, P. Auroy, and M. Bornens for fruitful discussions. Supporting Information is available online from Wiley Interscience or from the authors.


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A muscle-like material with a lamellar structure has been prepared for the first time from a liquid-crystalline triblock copolymer. The material consists of a repeated series of nematic-polymer blocks and conventional rubber blocks. The motor for the contraction is the reversible macromolecular-chain shape change, from stretched to spherical, of the nematic polymer that occurs at the nematic-to-isotropic phase transition.