Polarimetric Scattering from Two-Dimensional Dielectric Rough Sea Surface with a Ship-Induced Kelvin Wake

Based on the polarimetric scattering model of second-order small-slope approximation (SSA-II) with tapered wave incidence for reducing the edge effect caused by limited surface size, monostatic and bistatic polarimetric scattering signatures of two-dimensional dielectric rough sea surface with a ship-induced Kelvin wake is investigated in detail by comparison with those of sea surface without ship wake. The emphasis of this paper is on an investigation of depolarized scattering and enhanced backscattering of sea surface with a ship wake that changes the sea surface geometric structure especially for low wind conditions. Numerical simulations show that in the plane of incidence rough sea surface scattering is dominated by copolarized scattering rather than cross-polarized scattering and that under low wind conditions a larger ship speed gives rise to stronger enhanced backscattering and enhanced depolarized scattering. For both monostatic and bistatic configuration, simulation results indicate that electromagnetic scattering signatures in the presence of a ship wake dramatically differ from those without ship wake, which may serve as a basis for the detection of ships in marine environment.

Characterizing nanoparticles in complex biological media and physiological fluids with depolarized dynamic light scattering

Characterization of NPs in physiological and biological fluids is challenging, yet can be met by using depolarized scattering, offering advantages over UV-Vis and fluorescence correlation spectroscopy.

An Investigation on the Structure of Amorphurs Nano-Silica by XRD Method

Using Faber and Ziman depolarized scattering function theory and modified Kaplow method for eliminating cut off error，the structure of amorphous silica nanoparticles synthesized by a flame CVD process has been investigated. From measured intensities, reduced scattering intensity and radial distribution functions and thus the average atomic distance and the nearest coordination number were obtained. And the influence of particle size on the structure of the amorphous silica nanoparticles was also reported.