Table 1
Samples for SERS experiments
Film name	R6G concentration in the solution (M)	Volume R6G concentration in the solution (molecules/cm−3)	Surface R6G concentration in the film (molecules/cm−2)
R6G 10−7 M	10−7	6 × 1013	6 × 1012
R6G 10−3 M	10−3	6 × 1017	6 × 1016

Zhurikhina et al. Nanoscale Research Letters 2012 7:676   doi:10.1186/1556-276X-7-676