Table 3: Normalized areas, atomic percentages, and atomic report are obtained by XPS analysis, of different samples: (a) glass/MPS/gold/PDMSn=10, (b) glass/MPS/gold/PDMSn=10/gold, (c) glass/MPS/gold/PDMSn=37, and (d) glass/MPS/gold/PDMSn=37/gold.

PDMS(n=10)PDMS(n=10)PDMS(n=37)PDMS(n=37)
grafted on gold layer (a)covered by gold layer (b)Grafted on gold layer (c)covered by gold layer (d)

Normalised area C1s (cps eV)9650074300163200184350
Normalised area O1s (cps eV)30541363774213124115
Normalised area N1s (cps eV)2213260164312669
Normalised area Si 2p (cps eV)16487180921837413374
Normalised area Au4f (cps eV)354472755346816
% carbon53.346.870.967.9
% oxygen16.922.918.38.9
% nitrogen1.21.62.81
% Silicon (Si)9.111.484.9
% gold19.617.317.3
C/Si5.854.118.8813.78
Si/N7.456.962.865.01
Au/Si2.151.523.50
Au/N16.0210.5917.54
O/Si1.852.012.291.80