title: Measuring the light scattering and orientation of a spheroidal particle using in-line holography.
abstract: The light scattering properties of a horizontally and vertically oriented spheroidal particle under laser illumination are experimentally investigated using digital in-line holography. The reconstructed wave field shows the bright singular points as a result of the condensed beam formed by a transparent spheroidal particle acting as a lens. The in-plane (θ) and out-of-plane (ϕ) rotating angles of an arbitrarily oriented spheroidal particle are measured by using these scattering properties. As a feasibility test, the 3D orientation of a transparent spheroidal particle suspended in a microscale pipe flow is successfully reconstructed by adapting the proposed method.
authors: Kyung Won
authors: KW
authors: Seo
authors: Hyeok Jun
authors: HJ
authors: Byeon
authors: Sang Joon
authors: SJ
authors: Lee
mesh_terms: D006696:Holography / Q000295:instrumentation / Q000379:methods*; D007091:Image Processing, Computer-Assisted; D007834:Lasers; D008027:Light; D008863:Microspheres; D055096:Optical Devices; D055620:Optical Phenomena; D010316:Particle Size; D012542:Scattering, Radiation