[Back]


Publications in Scientific Journals:

A. Alamin Dow, M. Schneider, D. Koo, H. Al-Rubaye, A. Bittner, U. Schmid, N. Kherani:
"Modeling the performance of a micromachined piezoelectric energy harvester";
Microsystem Technologies - Micro- and Nanosystems - Information Storage and Processing Systems, 18 (2012), 1035 - 1043.



English abstract:
Piezoelectric energy microgenerators are devices
that generate continuously electricity when they are
subjected to varying mechanical strain due to e.g. ambient
vibrations. This paper presents the mathematical analysis,
modelling and validation of a miniaturized piezoelectric
energy harvester based on ambient random vibrations.
Aluminium nitride as piezoelectric material is arranged
between two electrodes. The device design includes a silicon
cantilever on which AlN film is deposited and which
features a seismic mass at the end of the cantilever. Euler-
Bernoulli energy approach and Hamiltonīs principle are
applied for device modeling and analysis of the operation
of the device at various acceleration values. The model
shows good agreement with the experimental findings, thus
giving confidence into model. Both mechanical and electrical
characteristics are considered and compared with the
experimental data, and good agreement is obtained. The
developed analytical model can be applied for the design of
piezoelectric microgenerators with enhanced performance.

German abstract:
Piezoelectric energy microgenerators are devices
that generate continuously electricity when they are
subjected to varying mechanical strain due to e.g. ambient
vibrations. This paper presents the mathematical analysis,
modelling and validation of a miniaturized piezoelectric
energy harvester based on ambient random vibrations.
Aluminium nitride as piezoelectric material is arranged
between two electrodes. The device design includes a silicon
cantilever on which AlN film is deposited and which
features a seismic mass at the end of the cantilever. Euler-
Bernoulli energy approach and Hamiltonīs principle are
applied for device modeling and analysis of the operation
of the device at various acceleration values. The model
shows good agreement with the experimental findings, thus
giving confidence into model. Both mechanical and electrical
characteristics are considered and compared with the
experimental data, and good agreement is obtained. The
developed analytical model can be applied for the design of
piezoelectric microgenerators with enhanced performance.


"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)
http://dx.doi.org/10.1007/s00542-012-1436-x


Created from the Publication Database of the Vienna University of Technology.