Table 2.

XPS atomic percentage for AMNP0, AMNP1 and AMNP2.

	C	O	W	Ag	Cu
AMNP0	42.7%	8.7%	47.3%	0.5%	0.8%
AMNP1	94.0%	2.9%	2.1%	0.5%	0.5%
AMNP2	77.7%	5.5%	6.7%	4.7%	5.4%