title: Static light scattering from microgel particles: model of variable dielectric permittivity.
abstract: We perform static light scattering experiments on a dilute suspension of microgel particles and model the resultant form factors Pq by assuming an exponentially decaying dielectric permittivity. The result is that Pq is a Lorentzian function of the scattering wavevector q for length scales greater than the particle size; the width approximately corresponding to twice the particle radius. This simple model reasonably accounts for scattered light from both swollen and shrunken microgel phases.
authors.affiliation: Group of Complex Fluids Physics, Department of Applied Physics, University of Almería, 04120 Almería, Spain. afnieves@ual.es
authors.forename: A
authors.initials: A
authors.lastname: Fernández-Nieves
authors.forename: F J
authors.initials: FJ
authors.lastname: de las Nieves
authors.forename: A
authors.initials: A
authors.lastname: Fernández-Barbero