Table 3.

Typical results of fitting analysis from electrochemical impedance measurements of samples exposed in DMEM solution at 0.15 Pa after 0.5, 6, 12, 18 and 24 h.

		0.5 h	6 h	12 h	18 h	24 h
Rs	(Ω cm2)	1.84 × 10−6	9.70 × 10−8	10.86	19.91	26.79
CPEp	(μF cm−2 s−n)	4.66 × 10−2	1.72 × 10−2	1.80 × 10−2	2.76 × 10−2	3.53 × 10−2
n	–	0.79	0.94	1	1	1
Rp	(Ω cm2)	192	244	166	154	131
CPEdl	(μF cm−2 s−n)	61	467	551	651	630
n	–	0.75	0.54	0.54	0.53	0.56
Rct	(Ω cm2)	209	187	157	143	117
RL	(Ω cm2)	235	319	225	237	201
L	(Ω s cm2)	546	278	303	291	287