Table 1.

Summary of properties of different samples and quantification of cellular attachment. Student’s t-test comparison to untreated np-Au.

Surface	% Average Porosity	Average Pore Area [nm2]	% Average Cell Coverage	Average Cell Area [µm2]	Average Cell Density [mm−2]
Glass	-	-	26.7 ± 9.7	1191 ± 260**	104 ± 24
Gold	-	-	39.7 ± 7.0*	1457 ± 116**	119 ± 28
np-Au (untreated)	24.6 ± 1.6	2786 ± 531	19.6 ± 4.9	855 ± 101	100 ± 24
np-Au (heat-treated)	25.1 ± 0.3	23682 ± 2062***	23.1 ± 4.0	914 ± 65	110 ± 19

Statistical significance in comparison to untreated np-Au:

^*p<0.001 (n=20);

^**p<0.005 (n=20);

^***p<0.002 (n=6)