Parallel heterodyne detection of dynamic light scattering spectra from gold nanoparticles diffusing in viscous fluids
Optics
2010-03-29 v1 Mesoscale and Nanoscale Physics
Abstract
We developed a microscope intended to probe, using a parallel heterodyne receiver, the fluctuation spectrum of light quasi-elastically scattered by gold nanoparticles diffusing in viscous fluids. The cutoff frequencies of the recorded spectra scale up linearly with those expected from single scattering formalism in a wide range of dynamic viscosities (1 to 15 times water viscosity at room temperature). Our scheme enables ensemble-averaged optical fluctuations measurements over multispeckle recordings in low light, at temporal frequencies up to 10 kHz, with a 12 Hz framerate array detector.
Cite
@article{arxiv.1003.5065,
title = {Parallel heterodyne detection of dynamic light scattering spectra from gold nanoparticles diffusing in viscous fluids},
author = {Michael Atlan and Pierre Desbiolles and Michel Gross and Maite Coppey-Moisan},
journal= {arXiv preprint arXiv:1003.5065},
year = {2010}
}