Lead-free materials for harvesting and sensing electronics Aml series piezoelectric materials green energy and sensing - crossing point Microelectronic technologies for alternative energy sources Microfabrication technology Printed polymer flexible energy harvesting - impact of the electrode materials and patterns Sputtering of Ga-doped ZnO nanocoatings on silicon for piezoelectric transducers Mariya Aleksandrova et al. - Conference ELMA2017