Plasmonic response of nanoscale spirals.
The Archimedean spiral geometry presents a platform for exploration of complex plasmonic mechanisms and applications. Here we show both through simulations and experiment that more complex plasmonic modes with unique near-field structure and larger mode volumes can be realized within a single, topologically robust structure. In the spiral, complex polarization response, resonant interactions and symmetry-breaking features are defined by the width and spacing of the spiral tracks and by the winding number of the spiral.
Ziegler
Jed I
JI
Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235-1807, USA. jed.i.ziegler@vanderbilt.edu
Haglund
Richard F
RF