Cell Morphology on Poly(methyl methacrylate) Microstructures as Function of Surface Energy

Table 1

Contact angles and calculated surface energy values for structured and nonstructured (control) surfaces (pe: perpendicular, pa: parallel).

	H2O; (°)	CH2I2; (°)	Surface energy; (mN/m)	Polar part; (mN/m)	Disperse part; (mN/m)
Nonstructured/pa	75.4±2.6	43.5±2.9	43.4	5.6	37.8
Nonstructured/pe	77.8±2.7	44.6±3.0	42.0	4.8	37.3
P1:1 Cubes/pa	87.2±1.3	61.4±2.8	31.4	3.6	27.8
P1:1 Cubes/pe	85.8±2.4	60.3±2.5	32.4	3.9	28.4
P1:5 Cubes/pa	81.9±1.9	59.8±1.9	34.0	5.3	28.7
P1:5 Cubes/pe	81.0±0.9	59.3±2.7	34.6	5.6	29.0
P1:1 Walls/pa	131.9±3.9	66.8±0.3	27.1	2.4	24.7
P1:1 Walls/pe	58.6±0.7	32.9±1.4	55.0	12.0	43.0
P1:5 Walls/pa	126.4±3,7	97.4±2.8	9.6	0.0	9.6
P1:5 Walls/pe	70.4±1.4	58.5±1.4	40.1	10.6	29.4