Shahbazyan T.V. – TechConnect Briefs

Vibrational Modes of Metal Nanoshells

Kirakosyan A.S., Shahbazyan T.V., Jackson State University, US

We study coherent oscillations of radial breathing modes in metal nanoparticles with a dielectric core. Vibrational modes are impulsively excited by a rapid heating of the particle lattice that occurs after laser excitation, while the [...]

Surface-Enhanced Raman Scattering in Small Noble-Metal Nanoparticles

Pustovit V.N., Shahbazyan T.V., Jackson State University, US

We present a microscopic theory of quantum-size effects in surface-enhanced Raman scattering (SERS) from molecules adsorbed on small metal nanoparticles. In noble-metal nanoparticles, the confining potential has different effect on s-band and d-band electrons. Namely, [...]

Finite-Size Effects and Surface-Enhanced Raman Scattering from Molecules Adsorbed on Noble-Metal Nanoparticles

Pustovit V.N., Walker K.M., Shahbazyan T.V., Jackson State University, US

We study theoretically the role of strong electron confinement on surface-enhanced Raman scattering (SERS) from molecules adsorbed on metal nanoparticles. We describe a novel enhancement mechanism, relevant for nanometer-sized noble-metal particles, which originates from different [...]