Clausen, Jeppe Sandvik1; Christiansen, Alexander Bruun3; Kristensen, Anders5; Mortensen, N. Asger5
1 Department of Photonics Engineering, Technical University of Denmark2 Structured Electromagnetic Materials, Department of Photonics Engineering, Technical University of Denmark3 Department of Micro- and Nanotechnology, Technical University of Denmark4 Optofluidics, Department of Micro- and Nanotechnology, Technical University of Denmark5 Center for Nanostructured Graphene, Center, Technical University of Denmark
In this paper we investigate how the color of a pigmented polymer is affected by reduction of the reflectance at the air-polymer interface. Both theoretical and experimental investigations show modified diffuse-direct reflectance spectra when the reflectance of the surface is lowered. Specifically it is found that the color change is manifested as an increase in chroma, leading to a clearer color experience. The experimental implementation is done using random tapered surface structures replicated in polymer from silicon masters using hot embossing.
Applied Optics, 2013, Vol 52, Issue 32, p. 7832-7837