XPS atomic percentages at each step of fabrication. All data reported is an average of at least N = 3 samples.

Sample	C	O	N	N/C	N/O	O/C
FLCS	72.21	23.11	4.67	0.06	0.20	0.32
FLCS-corona	59.74	34.87	5.39	0.09	0.15	0.58
FLCS-PDA 1 h	67.86	23.92	8.22	0.12	0.34	0.35
FLCS-PDA 12 h	68.94	21.61	9.44	0.14	0.44	0.31
FLCS-PDA 24 h	68.99	21.64	9.37	0.14	0.43	0.31