Using Coherent Spectroscopy to Determine the Presence of Nanoparticles in Colloidal Solutions

A review is presented of using nonlinear coherent spectroscopy to monitor the state of colloidal solutions of nanoparticles (Ti, Ni, and Ag) employed to improve the performance of supercapacitors, and to determine the effect nanosilver has on the hepatitis C virus. Examples of the spectra of a colloidal silver solution in two phase states (nanosilver and silver in the finely dispersed phase) are given.