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Proceedings Paper

Metal free structural colours via disordered nanostructures with nm resolution and full CYMK colour spectrum
Author(s): Marcella Bonifazi; Valerio Mazzone; Andrea Fratalocchi
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Paper Abstract

Structural colours represents a research area of great interest, due to a wide field of application ranging from micro-security to biomimetic materials. At present metallic substrate are heavily employed and only a partial spectra of colours can be realised. We propose a novel, metal-free technology that exploits the complex scattering from a disordered three-dimensional dielectric material on a silicon substrate. We reproduce experimentally the full spectrum of CMYK colours, including variations in intensity. Our resolution lies in the nm range, limited only by the electron beam lithography fabrication process. We demonstrate that this technique is extremely robust, suitable for flexible and reusable substrates. Full of these notable proprieties these nano-structures fits perfectly with the requirements of a real-world technology.

Paper Details

Date Published: 28 April 2017
PDF: 6 pages
Proc. SPIE 10115, Advanced Fabrication Technologies for Micro/Nano Optics and Photonics X, 101150E (28 April 2017); doi: 10.1117/12.2251936
Show Author Affiliations
Marcella Bonifazi, King Abdullah Univ. of Science and Technology (Saudi Arabia)
Valerio Mazzone, King Abdullah Univ. of Science and Technology (Saudi Arabia)
Andrea Fratalocchi, King Abdullah Univ. of Science and Technology (Saudi Arabia)


Published in SPIE Proceedings Vol. 10115:
Advanced Fabrication Technologies for Micro/Nano Optics and Photonics X
Georg von Freymann; Winston V. Schoenfeld; Raymond C. Rumpf, Editor(s)

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