Figure 1From: 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 synthesized using PVP with varying MWs. Varying MWs (a) 8,000, (b) 29,000, (c) 40,000, and (d) 1,300,000. The insets are photographs of the corresponding silver colloids.Back to article page