“…The physics behind the phenomenon is rather complex and depending on the size of the metallic colloidal particles either luminescence quenching or enhancement can be generated (Lakowicz, 2005). Since not only metalenhanced luminescence is achieved but also reduction in photobleaching (Muthu et al, 2008), the technique is starting to find applications in biosciences (Bünzli, 2013), photocatalysis (Thomann et al, 2011), and photovoltaics (Giannini et al, 2011). The incident electric field from the electromagnetic wave is modified by interacting with the metal surface, resulting in strong coupling between the surface plasmons of the metal particles and the transition dipoles of the chromophore.…”