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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 Sizea(nm) λsp(nm) dλsp/dnb 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
  1. 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.