Harutyunyan Lab Research
The optical properties of metal nanoparticles are governed by the collective oscillation of their surface electrons, called plasmons. After excitation these localized plasmonic modes can decay creating electron-hole pairs in metal. In typical materials such electronic transitions depend on material properties and cannot be changed. Dr. Harutyunyan and colleagues have demonstrated that the excitation of energetic electrons in gold nanoparticles can be controlled at will both in time and spectral domains. These findings can be used to develop better photonic circuitry and photovoltaic devices as well as in photocatalysis and photochemistry.
The research was published in Nature Nanotechnology, weblink http://www.nature.com/nnano/journal/vaop/ncurrent/full/nnano.2015.165.html