Figure 3From: Investigation on the role of the molecular weight of polyvinyl pyrrolidone in the shape control of high-yield silver nanospheres and nanowiresSEM images of silver nanocrystals obtained by varying the concentration of PVP MW=1,300,000 . (a) 0.143 M, (b) 0.286 M, and (c) 0.572 M.Back to article page