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Spin crossover composite materials for electrothermomechanical actuators

Gural'skiy, Il'ya A. and Quintero, Carlos M. and Sanchez Costa, José and Demont, Philippe and Molnar, Gabor and Salmon, Lionel and Shepherd, Helena J. and Bousseksou, Azzedine Spin crossover composite materials for electrothermomechanical actuators. (2014) Journal of Materials Chemistry. C, 2 (16). 2949-2955. ISSN 2050-7526

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Official URL: http://dx.doi.org/10.1039/c4tc00267a

Abstract

Composites of the spin crossover complex [Fe(trz)(H-trz)2](BF4) (H-trz ¼ 1,2,4-4H-triazole and trz ¼ 1,2,4-triazolato) dispersed in a poly(methylmethacrylate) (PMMA) matrix were synthesized and investigated for their spin crossover properties by optical reflectivity, Raman spectroscopy and calorimetry. These composite films were used to fabricate bilayer cantilevers that can perform efficient and tuneable mechanical actuation based on the spin transition. A prototype device that uses the spin transition phenomenon to convert electrical energy into mechanical motion through Joule heating is described. This device is used to perform oscillatory actuation driven by a modulated current. The ability to tune the performance of this electromechanical system is demonstrated by varying the working temperature, the applied ac current and its frequency.

Item Type:Article
Additional Information:Thanks to Royal Society of Chemistry editor. The original PDF of the article can be found at Journal of Materials Chemistry. C website : http://pubs.rsc.org/en/journals/journalissues/tc#!recentarticles&adv
HAL Id:hal-01166077
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Other partners > Taras Shevchenko National University of Kyiv (UKRAIN)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > University of Bath (UNITED KINGDOM)
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Deposited By: cirimat webmestre
Deposited On:22 Jun 2015 07:32

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