Polypyrrole-Chitosan-CaFe₂O₄ Layer Sensor for Detection of Anionic and Cationic Dye Using Surface Plasmon Resonance

Table 1

The resonance angle and the refractive index of layer.

Sample	Electrodeposition time (s)	Thickness (nm)	Refractive index	Resonance angle (deg)
1	10	2.8		52.897
2	20	3.4		53.024
3	420	13.6		55.297
4	500	19.8		56.817
5	1000	59.5		65.823