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\subsection{Motivations}  Nanoparticles are clusters of atoms or molecules with the size of 1 to 100 nanometers. Numerous properties of nanoparticles are found to depend on their size \cite{Roduner_2006} and shape \cite{Xia_2008}. The ability to control the size and shape of nanoparticles allows their properties to be tailored towards specific applications. applications such as catalysis \cite{astruc2008nanoparticles,Astruc_2006}, solar cell \cite{Atwater_2010}, and cancer therapeutics \cite{Jain_2010,Kim_2010}.  \subsection{Scope}