Cathodoluminescence analysis of plasmonic nanoparticles
Cathodoluminescence analysis of a gold prism of side length 200 nm. (a) STEM dark field image, (b) – (d) monochromatic (spectrally resolved) cathodoluminescence images at 1.37, 1.90, and 1.95 eV (900, 650, and 420 nm, respectively) with prism outlined by yellow dotted line, (e) Overall cathodoluminescence spectrum displaying three peaks.
STEM mode operating
(a) – (d) 768 x 768 pixel images acquired in 70 s