Dynamics and thermodynamics of artificial muscles based on nematic gels

Hébert, M. ; Kant, R. ; de Gennes, P.-G. (1997) Dynamics and thermodynamics of artificial muscles based on nematic gels Journal de Physique I, 7 (7). pp. 909-919. ISSN 1155-4304

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Official URL: http://jp1.journaldephysique.org/articles/jp1/abs/...

Related URL: http://dx.doi.org/10.1051/jp1:1997209

Abstract

A scheme based on nemato-mechanical conversion has been proposed for potential artificial muscle applications (de Gennes P.-G., Hébert M. and Kant R., to appear in Macromol. Symp. (1996)). As the temperature in a nematic gel is reduced through the transition temperature, strong uniaxial deformation is encountered. We briefly expose the dynamics of contraction/elongation in this system. Work and dissipative losses are calculated for an operating cycle to get an approximative expression of the ratio work/losses, which can then be compared with real muscular efficiencies.

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