Bespak Piezo Electric Actuator

The Bespak Piezo Electric Actuator is a novel aerosol delivery system based on a piezoelectric crystal combined with an electroformed mesh (Fig. 3). It produces droplets of adjustable size from a single metered drop or fluid reservoir. The mesh hole dimension (as small as 3 pm) determines the size of the droplets produced, whereas the size and density of the holes control the rate of fluid delivery. These can be varied according to the formulation. Although solutions are more readily nebulized, suspensions can be aerosolized if the particle size of the suspended particles is two to three times smaller than the mesh size. 

Fig. 3 Schematic diagram of the sprayhead of the Bespak Piezo Electric Actuator. (Reproduced courtesy of Bespak pic, UK.)...

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See also in sourсe #XX -- [ ]

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