Volume 115, Issue 8, 22 August 2001
Index of content:
115(2001); http://dx.doi.org/10.1063/1.1395627View Description Hide Description
We apply the integral equation theory to study the solvent-induced potential of mean force between two passivated nanoparticles in dilute solution. This approach explicitly accounts for the molecular structure of the solvent and the anisotropy of its density profile induced by the pair of nanoparticles. We discuss the implications of our theoretical results for the problem of self-assembly of nanoparticles, and point out significant differences from the commonly used continuum solvent model.
115(2001); http://dx.doi.org/10.1063/1.1396649View Description Hide Description
We propose a simple way of correcting general gradient and local density approximation surface energies for errors of these approximations intrinsic to surfaces by the appropriate use of reference systems with an exponential surface potential A test of this approach applied to general gradient and local density approximation surface exchange energies for half jellium systems removes most of the surface-intrinsic errors and yields excellent results. We suggest that the same procedure would also be successful for surface correlation effects. We conclude with some general remarks about future directions of density functional theory.
115(2001); http://dx.doi.org/10.1063/1.1396817View Description Hide Description
Low-frequency Raman scattering experiments have been performed on metal nanoparticles embedded in two different thermally treated matrices. In addition to the well-known Raman scattering by the nanoparticle quadrupolar vibrational mode, the spectrameasured in the frequency range exhibit several new bands. They are ascribed to resonant scattering by the nanoparticle breathing mode and its harmonics, in very good agreement with time-resolvedmeasurements.