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Table 1 Comparison of RI sensing performance for different nanoparticles

From: Ultrahigh refractive index sensing performance of plasmonic quadrupole resonances in gold nanoparticles

Type	Mode	Size^a(nm)	λ_sp(nm)	dλ_sp/dn^b	Δλ(nm)	FOM
Nanorod (A)	D	200/80	1,020	712.2	278.6	2.6
Nanorod (B)	Q	500/80	1,030	722.1	186.8	3.9
Nanobipyramid (C)	D	200/100	1,020	689.3	154.1	4.5
Nanobipyramid (D)	Q	200/42.5	1,045	676.9	91.7	7.4
Nanorod [7]	D	55/16	728	224		2.1
Nanorod [11]	D	50/15	730	170	125	1.3
Nanobipyramid [7]	D	189/40	1,098	540		4.5
Nanobipyramid [8]	D	90/30	800	352		4.5

^aThe nanoparticle sizes are expressed in the form of length/diameter. ^bThe unit for RI sensitivity is nanometers per refractive index unit (nm/RIU). D, dipole mode; Q, quadrupole mode.

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