Bidirectional Fractal Test of Dust Particle
To describe surface shape of the dust particle comprehensively, uses the bidirectional CCD to shoot picture of dust particle, through recognizing the bidirectional particle picture, matching the particle, computing the fractal results of identical particle in two pictures, and integrating two fractal results, obtains the dust particle bidirectional fractal. The results indicated that three fractal dimensions of spherical particle are quite closed, but the three fractal dimensions of flat type particle are significantly different.
F. Jiang et al., "Bidirectional Fractal Test of Dust Particle", Advanced Materials Research, Vols. 108-111, pp. 954-959, 2010