Table 4 Comparison of the sensing performance of the proposed biosensor with previously reported.

From: High-performance hexagonal cavity-based plasmonic MIM waveguide biosensor for sensitive and label-free detection of carcinoembryonic antigen (CEA)

Topology

Max sensitivity (nm/RIU)

Max FoM

References

Si ring resonator

636

211.3

41

Semi-elliptical and rectangular ring resonant

1384

28.4

42

E-shaped resonator

2453.75

22.8

43

H-shaped resonator

1960

15.2

28

tapered WG

1132.14

48.17

19

Hexagonal cavity-based resonator

770.27

160.47

This work

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