Figure 1.

SEM images of ZnS nanostructures produced with different sets of feeding rate and cooling gas flow ratea12 g/min and without cooling gas,b24 g/min and without cooling gas,c21 g/min and with cooling gas 3 m3/h, andd21 g/min and with cooling gas 6 m3/h

Peng et al. Nanoscale Research Letters 2009 4:1047-1053   doi:10.1007/s11671-009-9358-y