Topic
Light scattering
About: Light scattering is a research topic. Over the lifetime, 37721 publications have been published within this topic receiving 861581 citations.
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TL;DR: In this article, the complete separation of mixtures of magnetic particles was achieved by on-chip free-flow magnetophoresis, where magnetic particles were deflected from the direction of larninar flow by a perpendicular magnetic field depending on their magnetic susceptibility and size and on the flow rate.
134 citations
TL;DR: In this article, the authors use a photon detection process to measure the Doppler shifts of the scattered light in a laser beam, and then use the photon structure functions to resolve very small particle displacements.
Abstract: The motion of small scatterers in a laser beam results in Doppler shifts of the scattered light. Various homodyne or heterodyne experiments may be used to measure such shifts. The stochastic nature of spatial particle arrangements and of the photon-detection process leads to statistic data processing schemes like temporal correlation or the computation of structure functions. Photon correlation is one of these schemes and has found numerous applications in velocimetry and Brownian motion studies. Topics of current interest are dead-time corrections, the use of photon structure functions, and multiple tau measurements, which access large ranges of time constants in a single run. More recent data processing techniques are recurrence rate correlation for the immediate determination of velocity correlation functions in seeded fluid flows and the measurement of amplitude-weighted phase structure functions, which is able to resolve very small particle displacements otherwise completely obscured by random Brownian motion. Rate correlation found applications in hydrodynamic studies of the route to turbulence, while the major use of phase structure function processing is a very significant increase in the sensitivity of electrophoretic mobility measurements by light scattering.
134 citations
134 citations
TL;DR: In this article, the feasibility of Raman spectroscopy and temperature measurements in gases by Coherent Anti-Stokes Scattering is discussed and demonstrated experimentally and results are presented for H2 gas at room temperature and also for H 2 liberated by pyrolysis in a Bunsen flame.
134 citations
TL;DR: In this article, the equation relating dot area to half-tone density, when sideways scattering of light takes place in the paper, has been modified to take into account multiple internal reflections, and curves showing the relationship between dot area and density for various ink densities and amounts of first surface reflectance are given.
Abstract: The equation relating dot area to half-tone density, when sideways scattering of light takes place in the paper, has been modified to take into account multiple internal reflections. Curves showing the relationship between dot area and density for various ink densities and amounts of first-surface reflectance are given. Callahan’s conclusion that these effects are negligible is not in accordance with the authors’ experience, and the new equations indicate the possibility of densities much higher than the limiting values derived from Callahan’s equations and from our earlier equation which neglected multiple internal reflectance.
134 citations