Shape-Controlled Metal Nanoparticles and Their Assemblies with Optical Functionalities

Figure 19

TEM images of samples prepared (a) without and with irradiation of light of (b) 490–550 and (c) 650–810 nm (scale bars: 100 nm). (d, e, and f) Histograms showing the distribution of aspect ratios of the AgNRs observed in the samples shown in (a, b, and c), respectively. (g, h, and i) The corresponding DR spectra of the samples shown in (a, b, and c), respectively (the wavelengths of the incident light are indicated by squares). Reproduced with permission from [53]. Copyright 2011 The Royal Society of Chemistry.

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