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Fig. 2
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. (a) The radiative decay 
, (b) non-radiative decay 
, (c) excitation 
and (d) fluorescence enhancements 
for the NPoM nanocavities with facet diameter f = 0, 5 and 10 nm and the NPs on dielectric substrates with f = 0 and 10 nm. For clarity, 
, 
and 
for the NPs are multiplied by the indicated factors.
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