Coloring and color enhancement on noble metals rendered by plasmonic effects via multi-burst picosecond pulses
We report the angle-independent creation of full color palettes on the surface of silver, gold, copper and aluminum. We show significant color saturation of up to ∼69% and an increase in the lightness range by up to ∼ 60% with the use of multi-burst picosecond pulses. Finite-difference time-domain (FDTD) simulations show that high-spatial frequency LIPSS (HSFL) are responsible for the improvements. In addition, we show the passivation and tuning of the colors with the thickness of alumina deposited by atomic layer deposition.
|Keywords||nanoparticles, noble metal coloring, Plasmonics, plasmons, ultrafast laser|
|Conference||2017 Photonics North, PN 2017|
Guay, J.-M. (J. M.), Cala'Lesina, A. (A.), Baxter, J.S. (J. S.), Gordon, P.G. (P. G.), Barry, S.T, Ramunno, L. (L.), … Weck, A. (A.). (2017). Coloring and color enhancement on noble metals rendered by plasmonic effects via multi-burst picosecond pulses. In 2017 Photonics North, PN 2017. doi:10.1109/PN.2017.8090580