Micro Mirror Polymer Composite Offers Mechanically Switchable Light Transmittance

Elastic silicone composites with mechanically switchable transparency are generated by incorporating micron‐sized aluminum platelets into a highly flexible silicone. Physisorbing Fe3O4 nanoparticles onto the platelets surface allow magnetic pre‐alignment during the polymer curing. One‐dimensional or...

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Bibliographic Details
Published inAdvanced engineering materials Vol. 16; no. 7; pp. 878 - 883
Main Authors Rotzetter, Aline C. C., Fuhrer, Roland, Grass, Robert N., Schumacher, Christoph M., Stoessel, Philipp R., Stark, Wendelin J.
Format Journal Article
LanguageEnglish
Published Blackwell Publishing Ltd 01.07.2014
Subjects
Aluminum
Light transmittance
Nanoparticles
Orientation
Platelets
Polymer matrix composites
Silicones
Stretching
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ISSN1438-1656
1527-2648
DOI10.1002/adem.201300478

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Summary:Elastic silicone composites with mechanically switchable transparency are generated by incorporating micron‐sized aluminum platelets into a highly flexible silicone. Physisorbing Fe3O4 nanoparticles onto the platelets surface allow magnetic pre‐alignment during the polymer curing. One‐dimensional or two‐dimensional stretching of the resulting silicone composites permits orientation of the incorporated flakes and alters light transmittance of the polymer coating.
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We thank ETH Zurich for financial support. Urs Krebs is kindly acknowledged for designing and manufacturing the different set-ups (Supporting Information is available online from Wiley Online Library or from the author).
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ISSN:1438-1656
1527-2648
DOI:10.1002/adem.201300478