NOVELTY - The harvester has a cavity layer including open cavities (102), where a piezoelectric membrane layer (101) is placed on the cavity layer and seals the cavities. A compressible/ incompressible fluid layer (105) placed on the piezoelectric membrane layer is confined by another cavity layer. A cover layer is placed on the fluid layer. Compressible gas is supplied in the sealed cavities. The fluid layer is filled and kept in place by a rigid wall, the piezoelectric membrane layer and the cover layer. A set of electrodes (103a, 103b) is placed on a lower surface of the piezoelectric membrane layer.    USE - Asynchronous fluidic impulse-based energy harvester i.e. hybrid micro-scale microelectromechanical system (MEMS) device, for a detection system, a traffic safety system, a tactile touch sensor and a self powered keyboard (all claimed) for energy harvesting applications. Can also be used for lighting hallways during night-time and for low-profile vehicular traffic-based energy harvesting roadway stripes.    ADVANTAGE - The harvester includes floor tiles that are compact and robust, can be manufactured in an easy manner with low concomitant cost. The harvester can be scaled to accommodate heavy loads. The harvester utilizes external force that increases harvestable energy. The harvester ensures asynchronous operation that does not rely on resonant frequency matching. The floor tiles can allow connection of the electrodes between the tiles so as to provide combined power output.    DETAILED DESCRIPTION - The cover layer is a wear-resistant compliant layer. The piezoelectric layer made of polymer piezoelectric e.g. polyvinylidene fluoride (PVDF) and ceramic piezoelectric such as lead zirconate titanate (PZT) and macrofiber composite (MFC).    DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of a vibration energy harvester.    Piezoelectric membrane layer (101)    Open cavities (102)    Electrodes (103a, 103b)    Passivation layer (104)    Compressible/ incompressible fluid layer (105)