Optical characteristics of vertically aligned arrays of branched silver nanowires

Vertically aligned branched silver nanowires (Ag BNWs) were synthesized by electrodeposition. Typically, branched NWs seen in literature do not have vertical alignment of the branches, as opposed to the results shown here. A wavelength dependent absorption of these Ag BNWs was demonstrated in this work. The strong wavelength dependence of the reflectance and transmittance of these Ag BNWs may be attributed to the wave-guiding effect of the nanostructures.