Figure 6: s-SNOM images of a set of linear h-BN antennas of different length L.
From: Nanoimaging of resonating hyperbolic polaritons in linear boron nitride antennas
Imaging frequency ω=1,432 cm−1. The width and thickness of each antenna (according to the AFM topography images) are 230 nm and 64 nm, respectively. (a) L=746 nm. (b) L=1,327 nm. (c) L=1,713 nm. (d) L=2,210 nm. Scale bar, 500 nm.
