Table 2.

Comparison of sensitivity, figure of merit, and detection limit values of the present work with some experimental and theoretical previous works.

Year	S (nm / RIU)	FoM (/RIU)	DL (RIU)
201561	970	12.76 × 10−3	–
201662	450	~800	~1.6 × 10−4
201624	1179	2.2 × 103	~2.2 × 10−5
201759	850	–	–
201960	<70	1.04	–
202063	9615	–	–
This work	1.9 × 105	3.6 × 105	1.4 × 10−7