RT Journal Article
T1 Simulation of the thickness dependence of the optical properties of suspended particle devices
A1 Barrios Puerto, David
A1 Vergaz Benito, Ricardo
A1 Sánchez Pena, José Manuel
A1 García Cámara, Braulio
A1 Granqvist, Claes G.
A1 Niklasson, Gunnar A.
AB Suspended particle devices (SPDs) are able to rapidly switch from a dark bluish-black state to a clear greyish appearance when an AC electric field is applied. Two-flux and four-flux models were used to derive refractive indices and extinction coefficients, as well as scattering and absorption coefficients, of the particle-containing active layer. These entities were used in model calculations to predict direct, total and diffuse components of transmittance and reflectance, along with color appearance and haze, as a function of the thickness of the active layer. An optimum thickness for optical contrast of the SPD was determined in this way and was found to be in the range of 200–300 nm. The devices exhibit significant haze particularly in reflection.
PB Elsevier
SN 0927-0248
YR 2015
FD 2015-12-01
LK https://hdl.handle.net/10016/36688
UL https://hdl.handle.net/10016/36688
LA eng
NO We are grateful to the Prometeo program of the Ecuador government and to Senescyt (Secretaría Nacional de Educación Superior, Ciencia, Tecnología e Innovación). This work has been supported by Ministerio de Economía y Competitividad of Spain (Grant nos. TEC2013-47342-C2-2-R and TEC2013-50138-EXP) and the R&D Program SINFOTON S2013/MIT-2790 of the Comunidad de Madrid, and from the European Research Council under the European Community's Seventh Framework Program (FP7/2007-2013)/ERC Grant agreement no. 267234/GRINDOOR).
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RD 1 jun. 2024