Table 2.

Au/graphene-PDDA and their SERS intensity integral of S. aureus (integrated range of SERS intensity, 700~770 cm⁻¹)

Au/graphene-PDDA	SERS intensity*10−3 (integral)
1/2	43.89 ± 4.64
2/1	48.30 ± 6.33
4/1	114.26 ± 14.95
8/1	64.39 ± 4.11
16/1	47.39 ± 1.90
Au	29.75 ± 3.60