Here, we present two distinct approaches for low-dimensional assembly of metallic nanoparticles and their collective properties. In a synthetic approach, we have developed a new method to generate hollow shell-type assemblies of metal nanospheres and spikes with varying structural parameters by combining the templated nanoshell syntheses and the surfactant-assisted seed growth method. The shell-type assemblies of nanoparticles show enhanced far field and near field scattering properties compared to continuous nanoshells, and serve as excellent substrates for surface enhanced Raman spectroscopy (SERS). The origin of the uniform and bright SERS from shell-type assemblies will be discussed in the presentation. In addition, we will present a new approach to generate similar type of assembly structures by self-assembly rout for a dynamic control of assembly structure and properties.

Low-dimensional assembly of nanoparticles and their collective properties

247th National Meeting (2014)

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