Table 1
Roughness and aspect ratio of each silver nanostructure
	RTH	SWS	RTS	NRTS	NS
Roughness (nm)	2.75	5.64	5.93	17.04	39.3
Aspect ratio	0.1	0.3	1.1	1.3	2.6

NS, needle-shape; NRTS, needle-on-round-top-shape; RTH, round-top hexagon; RTS, round-top shape; SWS, sharp-wave-shape.

Cha et al. Nanoscale Research Letters 2012 7:292   doi:10.1186/1556-276X-7-292