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4) Continuous process allow large yields of nanocrystals to be synthesized.  Shape-control in noble metal systems, Ag in particular, is our interest.  This is because the structure-property relationship of Ag nanocrystals is evident, particularly in their capabilities in localized surface plasmon resonance (LSPR). resonance.  That is when light incident upon the surface, collective oscillation of free electrons (also known as plasmons) arises as light wave are trapped within nanocrystals smaller than the wavelength of light \cite{Petryayeva_2011}.  The geometric shape of the nanocrystal dictates the number of resonance peaks, their wavelengths, and the partitioning between scattering and absorption cross sections.  This is because polarization of free electrons and charges distribution occurs over the nanocrystal surface.  Among all metals, Ag exhibits the strongest plasmonic interaction with light \cite{Lu_2009}.  Achieving tight shape-control can complement applications such as bioassays based on surface-enhanced Raman spectroscopy (SERS).  For example, a LSPR localized surface plasmon resonance  biochip was can be  used in for  real-time detection of insulin \cite{Hiep_2008}. \subsection{Research objective}  Our research objective is to gain molecular understanding of how Ag nanocrystals are grown to specific shapes, such as nanocubes \cite{Im_2005} and nanowires \cite{Tsuji_2008}.