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  _____      ___     __   _     _____    _    _   
 / ____||   / _ \\  | || | ||  |  ___|| | \  / || 
/ //---`'  | / \ || | '--' ||  | ||__   |  \/  || 
\ \\___    | \_/ || | .--. ||  | ||__   | .  . || 
 \_____||   \___//  |_|| |_||  |_____|| |_|\/|_|| 
  `----`    `---`   `-`  `-`   `-----`  `-`  `-`

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Text this: Piezoelectric cylindrical design for harvesting energy in multi-directional vibration source