Table 2.

Experimentally determined fluorescence enhancement factors EF with the information on plasmonic nanostructure, type of supported surface plasmon modes, and intrinsic quantum yield of used fluorophore. Studies in which dyes were attached at the distance d = 10–20 nm from a metal are preferably selected

Plasmonics structure	EF	Fluorophore (η 0)	f	Ref.
Continuous metallic films
Au, ATR-coupled SPP	32	Rhodamine-6G (0.95)	High	[58]
Au, ATR-coupled SPP	17	MR 21		[104]
Ag, 2D grating-coupled SPP	100	Cy5 (0.28)	High	[68]
Au, 1D grating-coupled SPP	13	CdSe-ZnS QD (0.45)	High	[122]
Au, 1D grating-coupled SPP	24	Cy5 (0.28)	High	[123]
Au bull’s eye, hybrid SPP and LSP	77	AF 647 (0.3)	High	[34]
Ag, 1 D grating SPP	30	Rhodamine 6G (0.95)	High	[124]
Nanoclusters
Ag/Au, 2D nanoclusters, LSP	9.4	Cy5 (0.28)		[125]
Ag/Au, 2D nanoclusters, LSP	35	Cy5 (0.28)		[72]
Ag, rough nanopourous film, LSP	30	Rhodamine-6G (0.95)		[126]
Ag, island film, LSP	50	Bis benzimidazo perylene		[127]
Chemically synthesized nanoparticles
Au core dielectric shell, LSP	40	IR800 (0.07)		[73]
Ag spherical NP, LSP	13–15	AF488 (0.92)		[14]
Au spherical NP, LSP	8–10	Nile Blue (0.8)		[128]
Ag spherical NP aggregated, LSP	170	Atto 655 (0.13)		[75]
Ag spherical NP on Ag film, SPP coupled with LSP	1,000	perylene diimide	High	[76]
Au nanorod, LSP	20.8	Oxazine-725		[74]
Ag spherical hollow NP, LSP	300	Cy5 (0.28)		[129]
Ag core dielectric shell, LSP	94	Octadecyl Rhodamine B (R18)		[130]
Lithography fabricated nanoparticles
Bow tie NP, LSP	1,340	TPQDI (0.025)		[43]
Au gap-antenna, LSP	1,100	Alexa Fluor 647 with quencher (0.08)		[57]
Au D2PA, LSP	2,970	ICG (0.012)		[78]
Ag nanodisks, LSP	15	Cy3 (0.04)		[79]
Au nanodisks, LSP	15	CdSe–ZnS QDs (0.3–0.5)		[80]
Au nanoholes, hybrid SPP and LSP	82	Oxazine 720 (0.6)		[82]
Ag nanoholes, hybrid SPP and LSP	110	Cy5 (0.28)		[68]
Au nanodisk over metal film, LSP	600	IR800 (0.07)		[131]
Au nanotriangle, LSP	83	Alexa Fluor 790 (0.04)		[48]