Fig. 1

AgNWs were successfully synthesized by one-step polyol method using PVP as a capping agent. a,b The length and diameter distribution of the as-synthesized AgNWs.Inset: morphology of AgNWs, low resolution (Scale bar = 50 μm) and high resolution (Scale bar = 1 μm). c The thickness distribution of PVP nanolayer on the surface of AgNWs.Inset: the TEM image of individual AgNW with PVP nanolayer. Scale bar = 20 nm