Sphericity, Aspect Ratio, and Convexity

Sphericity, Aspect Ratio, and Convexity Parameters describing the shape of the particles include the following ... 

In colloidal suspensions, the sound propagation is typically governed by the acoustophoretic motion of particles. For monodisperse spheroids that do not deviate too much from spherical shape (aspect ratio <10/1), the attenuation spectrum essentially reflects the volume specific surface area of the particles (Babick and Richter 2006). Similar results would probably be obtained for any convex particle shape. For particle aggregates, the inner structure is decisive. Regarding the type of quantity, acoustically measured size distributions are ideally volume weighted distributions (see comments in Sect. 2.2). 

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