Table 3. Roughness Values, Thickness, Measured Surface Area, Streaming Potential Measurement (SPM), and Contact Angle Measurement of Various Substrates.

sample	Sa (μm)	Sz (μm)	thickness (μm)	measured surface area (mm2)	SPM (mV) in 0.01 M PBS	CAM (deg)
SS	0.33 ± 0.06	4.23 ± 0.46	N/A	0.079 ± 0.1	–31.52 ± 3.31	45 ± 2
FA ordered	4.78 ± 1.02	83.35 ± 5.73	7.28 ± 0.46	0.61 ± 0.24	–10.51 ± 3.23	<5
FA disordered	9.63 ± 1.04	106.47 ± 7.72	49.07 ± 6.58	1.51 ± 0.26	0.32 ± 0.52	<5