title: Measurement of special nanoparticle structures by light scattering.
abstract: The characterization of nanoparticle size and structure by means of classical light scattering measurements from monodisperse suspensions is examined from both the Rayleigh-Gans (R-G) approximation as well as (for various spherical structures) the exact Lorenz-Mie theory. A means by which the traditional limits of the R-G theory may be extended and simplified is shown by a detailed discussion of the characteristic mean-square radius. This becomes particularly important for irregular particle shapes, where scattering depends on the orientation of such particles with respect to the direction of the incident illumination. A variety of particle structures are addressed, including rods, tubes, ellipsoids, rings, and superellipsoids.
authors.affiliation: Wyatt Technology Corporation , Santa Barbara, California 93117, United States.
authors.forename: Philip J
authors.initials: PJ
authors.lastname: Wyatt