Publication:
Modelling and electro-optical testing of suspended particle devices

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2008
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Elsevier
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Some smart windows make use of suspended particle devices (SPDs) which are made of charged rod-shape particles that change their orientation in an applied electric field, thereby allowing transmittance control. In this work, the electro-optical behaviour of a commercial SPD is analyzed. Impedance analysis shows characteristics similar to those of a Randles circuit, and a modified equivalent circuit is proposed and experimentally validated. Intermediate levels of transmittance are obtained using a customized field programmable gate array (FPGA)-based electrical circuit. Finally, measurements are taken to check the applicability of the SPD device and control system in smart glazing or photonic applications.
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Control system, Equivalent circuit, Impedance, Measurement, Transmittance, Electric field, Orientation, Charged particle, Windows, Suspended particle, Modeling
Bibliographic citation
Solar energy materials & solar cells, nº92, p.1483-1487, 5 August 2008.