Abstract: In order to overcome the difficulties faced on analytically deriving the equation for describing the samll angle light scattering (SALS) patterns from anisotropic objects with arbitrarily director configurations, a Fast Fourior Transformation(FFT) algorithm for the calculation of SALS patterns from the anisotropic objects immersed in an isotropic matrix has been developed. With this method, the types of nematic droplets with different director configurations could be easily distinguished. For a certain configuration, it could also be achieved to indicate the direction of the main axis of droplets. It is fully demonstrated that the SALS patterns from the anisotropic objects can be predicted through the FFT algorithm without needs of complicated mathematical derivations.

Key words: Liquid crystal droplet, Director configuration, SALS, FFT