Abstract: According to embodiments of the present invention, an energy harvesting device is provided. The energy harvesting device includes a microchannel arranged to receive a fluid, a bluff body arranged to interact with the fluid flowing through the microchannel to generate a vortex fluid street, and an energy harvesting element arranged to interact with the vortex fluid street to harvest energy from the fluid. According to further embodiments of the present invention, a method of harvesting energy is also provided.

Abstract: A transducer is provided, which includes a substrate, wherein a cavity is defined at least partially through the substrate, at least one stopper structure arranged within the cavity, a support layer arranged over the at least one stopper structure and the cavity to seal the cavity, and a piezoelectric functional arrangement arranged on the support layer. According to further embodiments of the present invention, a method for forming a transducer is also provided.

Abstract: According to embodiments of the present invention, an energy harvesting device is provided. The energy harvesting device includes a plurality of energy harvesting elements, each energy harvesting element including a transducer, and at least one spring arranged in between at least two energy harvesting elements of the plurality of energy harvesting elements to mechanically couple the at least two energy harvesting elements to each other. According to further embodiments of the present invention, a method for forming an energy harvesting device is also provided.