Cambridge Enterprise Limited

Sijun Du

Ashwin Arunkuman Seshia

Yu Jia

An apparatus is provided for harvesting energy from mechanical vibrations with an improved power output. The apparatus comprises a frame (), a first member () comprising a piezoelectric material, a cantilever beam () and an electrode. The first member is fixed to the frame at a first position and a second position and extends between the first and second positions. The cantilever beam has a first end fixed to the first member between the first position and the second position and a second end fixed to a proof mass (). The electrode is fixed to the first member at a position between the first position and the second position. In another aspect, the apparatus may comprise a plurality of proof masses connected to the first member between the first and second positions in a spaced relationship to one another.

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Cambridge, United Kingdom

Sijun Du