Morphology modulation of artificial muscles by thermodynamic-twist coupling.

ABSTRACT: Human muscles can grow and change their length with body development; therefore, artificial muscles that modulate their morphology according to changing needs are needed. In this paper, we report a strategy to transform an artificial muscle into a new muscle with a different morphology by thermodynamic-twist coupling, and illustrate its structural evolution during actuation. The muscle length can be continuously modulated over a large temperature range, and actuation occurs by continuously changing the temperature. This strategy is applicable to different actuation modes, including tensile elongation, tensile contraction and torsional rotation. This is realized by twist insertion into a fibre to produce torsional stress. Fibre annealing causes partial thermodynamic relaxation of the spiral

SUBMITTER: Hu X 

PROVIDER: S-EPMC9843299 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature