Table 1.

Mean roughness parameters measured at three different sites on each Epoxy replica.

replica	Ra (µm)	Rmax (µm)	Rpk (µm)	Sm (mm)	σs (µm)	β (µm)	η (µm−2)	original surface
1	0.193	0.306	0.306	0.048	2.010	24.554	0.045	abrasive paper
2	0.953	1.070	1.070	0.054	4.718	11.253	0.005	abrasive paper
3	1.683	1.587	1.587	0.075	4.137	9.473	0.004	abrasive paper
4	2.287	2.253	2.253	0.075	5.390	7.651	0.003	abrasive paper
5	0.237	0.393	0.393	0.064	4.472	24.439	0.037	microscope slide
6	2.510	2.087	2.087	0.103	2.956	8.058	0.003	office paper
7	1.767	2.173	2.173	0.090	4.426	12.414	0.004	hard paper
8	1.010	0.520	0.520	0.160	8.712	19.859	0.007	hard paper
9	1.793	0.897	0.897	0.358	9.728	20.953	0.011	microscope base
10	4.363	2.807	2.807	0.339	10.327	15.212	0.008	office table
11	1.230	0.927	0.927	0.169	3.818	19.871	0.008	hard paper
12	2.270	1.383	1.383	0.440	7.619	20.977	0.013	plastic folder