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Resonant Microcantilevers for the Determination of the Loss Modulus of Thin Polymer Films

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4 Author(s)
Cédric Ayela ; Laboratoire de l'Intégration du Matériau au Système, Université de Bordeaux, Talence, France ; Stephen M. Heinrich ; Fabien Josse ; Isabelle Dufour

The increasing interest in polymer materials creates the need for accurate tools to characterize their mechanical properties. Due to energy dissipation in polymers during deformation, these materials exhibit viscoelastic behavior. Accurate determination of these viscoelastic properties and, more specifically, viscous losses, remains challenging and mainly unknown for thin polymer films. In this paper, a straightforward method to determine the loss modulus of organic materials using resonating microcantilevers has been developed. The extracted results for polyisobutylene show the variation of viscous losses over a large range of frequencies (7-350 kHz).

Published in:

Journal of Microelectromechanical Systems  (Volume:20 ,  Issue: 4 )