Resonant surface plasmons of a metal nanosphere treated as propagating surface plasmons<xref rid="cpb_27_6_067302_fn1" ref-type="fn">*</xref><fn id="cpb_27_6_067302_fn1"> <label>*</label> <p>Project supported by the National Natural Science Foundation of China (Grant No. 11704058) and the Fundamental Research Funds for the Central Universities, China (Grant No. DUT16RC(3)111).</p> </fn>

Resonant surface plasmons of a metal nanosphere treated as propagating surface plasmons* *

Project supported by the National Natural Science Foundation of China (Grant No. 11704058) and the Fundamental Research Funds for the Central Universities, China (Grant No. DUT16RC(3)111).

Fang Yu-Rui^{1, 2, †}, Tian Xiao-Rui³

(color online) Dispersion relations of SPPs on silver spherical nanoparticles in air and those of SPPs on the interface between air and silver planar surface, obtained from the Drude mode, at the same parameters as those in Fig. 1. In panel (a) nanoparticle radii range from 5 nm to 500 nm and the inset shows the dispersion relations of nanoparticles with radii ranging from 5 nm to 100 nm. In panel (b) only the dispersion relation of the nanoparticle with R = 250 nm is plotted.