| In recent years, it is widely concerned that analyzing the inner structure and the components of nanoparticles and submicron particles by using the light scattering method, which is an atraumatic and rapid technique. Having the ability to calculate particles with arbitrary shape and various components, the discrete dipole approximation is utilized to analysis the light scattering characteristic of some typical non-spherical particles, including soot aggregates, sea fog aerosols and red blood cells. This is of great importance in fields such as controlling the atmospheric pollution, free space optical communication and detection of human body diseases.Based on fractal theory, a improved fractal model is proposed to model soot aggregates with different porosity. The influence of the light scattering characteristic of soot particles by their porosity and components is analyzed. According to the size distributions of marine aerosols in the clear sky condition, the size distribution after sea fog formed is shown. The attenuation-coeffcient is calculated. The relationship between visibility and moisture content is inversed and the results is compared with empirical formulas. Healthy red blood cells are biconcave-discal and the pathological red blood cells are sickle-shaped or oval.The light scattering characteristics of red blood cells with different types, orientations, sizes and refractive index are compared, respectively. |
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