Polarization-independent actively tunable colour generation on imprinted plasmonic surfaces

Daniel Franklin, Yuan Chen, Abraham Vazquez-Guardado, Sushrut Modak, Javaneh Boroumand, Daming Xu, Shin-Tson Wu and Debashis Chanda ()
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Daniel Franklin: University of Central Florida
Yuan Chen: CREOL, The College of Optics and Photonics, University of Central Florida
Abraham Vazquez-Guardado: NanoScience Technology Center, University of Central Florida
Sushrut Modak: NanoScience Technology Center, University of Central Florida
Javaneh Boroumand: University of Central Florida
Daming Xu: CREOL, The College of Optics and Photonics, University of Central Florida
Shin-Tson Wu: CREOL, The College of Optics and Photonics, University of Central Florida
Debashis Chanda: University of Central Florida

Nature Communications, 2015, vol. 6, issue 1, 1-8

Abstract: Abstract Structural colour arising from nanostructured metallic surfaces offers many benefits compared to conventional pigmentation based display technologies, such as increased resolution and scalability of their optical response with structure dimensions. However, once these structures are fabricated their optical characteristics remain static, limiting their potential application. Here, by using a specially designed nanostructured plasmonic surface in conjunction with high birefringence liquid crystals, we demonstrate a tunable polarization-independent reflective surface where the colour of the surface is changed as a function of applied voltage. A large range of colour tunability is achieved over previous reports by utilizing an engineered surface which allows full liquid crystal reorientation while maximizing the overlap between plasmonic fields and liquid crystal. In combination with imprinted structures of varying periods, a full range of colours spanning the entire visible spectrum is achieved, paving the way towards dynamic pixels for reflective displays.

Date: 2015
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DOI: 10.1038/ncomms8337

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