Table 1.

SPR wavelength and half width at half maximum (HWHM) dependence on the surroundings of the Al thin film on quartz and sapphire prisms.

Prism	Surroundings	SPR wavelength	HWHM
Quartz	Air	190.3 nm	—
Quartz	HFIP	334.4 nm	63 nm
Quartz	Water	568.0 nm	120 nm
Sapphire	HFIP	215.2 nm	25 nm
Sapphire	Water	227.5 nm	30 nm