Ultrasound-assisted filtration and aggregation

Filtration is one of the usual ways to separate phases, which is dramatically facilitated by US. Although the primary uses of this effect are in the industrial field — where retention of suspended solids within a porous medium subjected to US has been widely studied [49] — its analytical applications warrant some comment. Thus  

Sonophoresis is another special type of US-assisted filtration in which the skin acts as a filter. 

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