Morphology twinned nanorods

A number of nanowire and nanorod morphologies are available but the most common are single crystalline and those with a pentagonal symmetry that results from a five-fold twinning in the seed nanoparticles. The structure of the single crystal [50-52] and pentagonal [53-55] morphologies has been established by extensive TEM analysis. 

Fig. 9.4. El ongated cyclic penta-tetrahedral twin model of gold nanorods, taken from [45], (a) Idealized 3-D morphology showing 111 end faces and 100 side faces. The common five-fold axis of elongation is [110], (b) Cross-section of nanorod structure showing arrangement of twins T1 to T5, and possible orientations of domains with respect to the...

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