We know that Raman spectroscopy is a powerful tool that gives precise information on the vibration energies of molecules, and can provide the fingerprint for unique chemical identification. However, the Raman scattering cross section of most biological macromolecules  is  extremely  small,  which  causes  the  Raman  signals  of  biological [c]macromolecules are very difficult to obtain  . Thus, in this paper, we attempt to obtain new SERS substrates  to  solve  this  question.  Such  as  the  Ag  nanofilms  prepared  by  using  electrostatic self-assembly with the ******-Ag CNPs in this work.  

Originally posted by ashao at 2010-03-12 23:00:47:

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