Figure 15.

Another application of UV-Vis spectroscopy to characterize the dependence of plasmon resonance sensitivity on the geometry and morphology of the plasmonic system. UV-vis spectra of gold nanorods with aspect ratios varying between 1.7 to 6.8 along with the TEM images corresponding to each are shown. As is observed, the plasmon resonance of a gold nanorod can be tuned across the solar spectrum by controlling its nanogeometry. This has potential in the fabrication of composite, panchromatic plasmonic systems that ideally provide for broad and uniform absorption properties across the visible portion of the solar spectrum [178]. Reprinted with permission from Ref [178] Copyright American Chemical Society (2015).