Past few decades were concentrated on researches related to effective energy harvesting applied in modern technologies,
MEMS or MOEMS systems. There are many methods for harvesting energy as, for example, usage of electromagnetic
devices, but most dramatic changes were noticed in the usage of piezoelectric materials in small scale devices. Major
limitation faced was too small generated power by piezoelectric materials or high resonant frequencies of such smallscale
harvesters. In this research, novel composite piezoelectric material was created by mixing PZT powder with 20%
solution of polyvinyl butyral in benzyl alcohol. Obtained paste was screen printed on copper foil using 325 mesh
stainless steel screen and dried for 30 min at 100 °C. Polyvinyl butyral ensures good adhesion and flexibility of a new
material at the conditions that requires strong binding. Five types of a composite piezoelectric material with different
concentrations of PZT (40%, 50%, 60%, 70% and 80 %) were produced. As the results showed, these harvesters were
able to transform mechanical strain energy into electric potential and, v.v. In experimental setup, electromagnetic shaker
was used to excite energy harvester that is fixed in the custom-built clamp, while generated electric potential were
registered with USB oscilloscope PICO 3424. The designed devices generate up to 80 μV at 50 Hz excitation. This
property can be applied to power microsystem devices or to use them in portable electronics and wireless sensors.
However, the main advantage of the created composite piezoelectric material is possibility to apply it on any uniform or
nonuniform vibrating surface and to transform low frequency vibrations into electricity.