Table 1. The effect of various reaction conditions at different stirring conditions on the synthesis and characteristics of thorn-like ZnO nanoparticles.

Sample	Nano-diameters (nm)	Aspect ratio
ZnO-500 rpm	~25 nm	~8.6
ZnO-1000 rpm	~20 nm	~9
ZnO-1500 rpm	~7 nm	~13
ZnO-2000 rpm	~3 nm	~18