Scaling prospects in mechanical energy harvesting with piezo nanowires Gustavo Ardila, Ronan Hinchet, Mireille Mouis and Laurent Montès Eur. Phys. J. Appl. Phys., 63 1 (2013) 14407 Published online: 05 July 2013 DOI: 10.1051/epjap/2013120483