Table 1.

The list of substrates with varying types of coatings used to systematically study the influence of surface chemistry and charge on bacterial adhesion.

Surface	Contact angle of water (°)	Contact angle of DIM (°)	Nonpolar surface energy (mJ/m2)	Polar surface energy (mJ/m2)	Surface energy (mJ/m2)	Zeta potential (mV)	Film thickness (nm)
-C2NH2	54.5 ± 1.0	36.1 ± 0.5	41.5 ± 0.2	14.8 ± 0.5	56.3 ± 0.6	+10.3	2.4 ± 0.3
-C15COOH	59.3 ± 0.7	37.5 ± 0.5	40.9 ± 0.3	12.4 ± 0.3	53.3 ± 0.5	−47.6	2.9 ± 0.3
-C7CH3	92.5 ± 0.7	55.5 ± 0.6	31.2 ± 0.3	1.5 ± 0.2	32.7 ± 0.2	−22.7	2.5 ± 0.3
-C9CH3	98.6 ± 0.8	66.4 ± 0.7	24.9 ± 0.4	1.2 ± 0.1	26.1 ± 0.4	−22.9	2.9 ± 0.3
-C17CH3	108.4 ± 0.7	72.8 ± 0.6	21.4 ± 0.3	0.2 ± 0.1	21.6 ± 0.3	−14.0	3.0 ± 0.3