Production technique of synthetic jet actuators

A synthetic jet actuator comprising:

• a first cavity layer comprising:
• a body having first and second planar surfaces persistently formed in a preassembly phase, an outer perimeter, and an inner perimeter defining an internal cavity for reception of a fluid volume;
• and
• an orifice providing a fluid communication between the cavity and an external atmosphere;
• and
• a first oscillatory membrane comprising a piezoelectric material adapted to deflect the first oscillatory membrane in response to an electrical signal, the first oscillatory membrane corresponds in size and shape to the outer perimeter of the cavity layer and the piezoelectric material is sized and shaped to not exceed the inner perimeter of the cavity layer, wherein
• the cavity has an opening in at least one of the first and second planar surfaces of the first cavity layer, and the first oscillatory membrane is positioned adjacent to a respective one of the first and second planar surfaces having the cavity opening and adapted as an enclosing surface to said cavity opening,
• the first oscillatory membrane is adapted to compress and expand a volume within the cavity, based on a deflection generated by the piezoelectric material, for generating a fluid flow between the cavity and the external atmosphere through the orifice, and
• the first cavity layer and the first oscillatory membrane are joined by an adhesive material;
• and
• wherein the synthetic jet actuator further comprising:
• an acoustic nozzle comprising:
• an exterior ring made of an acoustic barrier material, with an acoustic substrate and an acoustic absorbent layer provided within the exterior ring, the acoustic substrate being positioned outside an extended flow path provided to the orifice of the cavity layer, and the acoustic absorbent layer being positioned outside the acoustic substrate.