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Issue 16, 2014
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Spin crossover composite materials for electrothermomechanical actuators

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Abstract

Composites of the spin crossover complex [Fe(trz)(H-trz)2](BF4) (H-trz = 1,2,4-4H-triazole and trz = 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.

Graphical abstract: Spin crossover composite materials for electrothermomechanical actuators

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Publication details

The article was received on 10 Feb 2014, accepted on 02 Mar 2014 and first published on 05 Mar 2014


Article type: Paper
DOI: 10.1039/C4TC00267A
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Citation: J. Mater. Chem. C, 2014,2, 2949-2955
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    Spin crossover composite materials for electrothermomechanical actuators

    I. A. Gural'skiy, C. M. Quintero, J. S. Costa, P. Demont, G. Molnár, L. Salmon, H. J. Shepherd and A. Bousseksou, J. Mater. Chem. C, 2014, 2, 2949
    DOI: 10.1039/C4TC00267A

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