Figure 1.
Metal enhanced fluorescence mechanism: (a) the localized surface plasmon resonance (LSPR) effect on metallic structures, (b) the plasmon coupling effect due to non-radiative interactions, modified from [47], (c) the intrinsic radiative decay effect, modified from [47], (d) fluorescence enhancement as a function of the bowtie structures gap size (adapted with permission from [50]), and (e) fluorescence enhancement (emissions, absorption, and total enhancement) as a function of the structure radius (adapted with permission from [53], Copyright 2009, Optical Society of America).