Plasmonic with photons
We look into the strong field enhancement and light confinement to nanoscale volumes of plasmon modes in metal nanostructures – an intriguing research topic even after many years of intense exploration.
We have recently worked on specific plasmon modes coupling only weakly to light [1], stacked nanoparticles [2] and nanowires [3]. Besides geometry, material parameters as crystallinity and roughness crucially determine plasmonic properties [3,4]. Proceeding from single nanoparticles to regular arrays, emerging phenomena as surface lattice resonances still challenge our understanding of the underlying physics [5].
[1] M.K. Krug et al., Appl. Phys. Lett. 105, 171103 (2014)
[2] G. Schaffernak et al., ACS Photonics 5, 4823 (2018)
[3] P. Kusar et al., Nano Lett. 12, 661 (2012)
[4] A. Trügler et al., Phys. Rev. B 89, 165409 (2014)
[5] V. Tretnak et al., J. Phys. Chem. C (2019)
