title: Measurement of mechanical forces acting on optically trapped dielectric spheres induced by surface-enhanced Raman scattering.
abstract: Surface enhanced Raman scattering (SERS) is studied from optically trapped dielectric spheres partially covered with silver colloids in a solution with SERS active molecules. The Raman scattering and Brownian motion of the sphere are simultaneously measured to reveal correlations between the enhancement of the Raman signal and average position of the sphere. The correlations are due to the momenta transfer of the emitted Raman photons from the probe molecules. The addition of a mechanical force measurement provides a different dimension to the study of Raman processes.
authors.affiliation: ICFO - Institut de Ciències Fotòniques, Mediterranean Technology Park, 08860 Castelldefels (Barcelona), Spain.
authors.forename: Satish
authors.initials: S
authors.lastname: Rao
authors.forename: Stefan
authors.initials: S
authors.lastname: Bálint
authors.forename: Pål
authors.initials: P
authors.lastname: Løvhaugen
authors.forename: Mark
authors.initials: M
authors.lastname: Kreuzer
authors.forename: Dmitri
authors.initials: D
authors.lastname: Petrov