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We present a new piezoelectric flow energy harvester (PFEH) based on a piezoelectric cantilever (PEC) with a cylindrical extension. The flow-induced vibration of the cylindrical extension causes the PEC to vibrate at the natural frequency of the PFEH. The PFEH provides a low-cost, compact, and scalable power source for small electronics by harvesting energy from ambient flows such as wind and water...
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