TY - GEN
T1 - Thermisches Energy Harvesting mit magnetischen Formgedächtnis-Dünnschichten
AU - Gültig, M.
AU - Ohtsuka, M.
AU - Miki, H.
AU - Takagi, T.
AU - Kohl, M.
N1 - Publisher Copyright:
© VDE VERLAG GMBH ∙ Berlin ∙ Offenbach
PY - 2015
Y1 - 2015
N2 - This work presents two novel principles for thermal energy harvesting based on ferromagnetic and metamagnetic shape memory thin films. Both principles exploit the large change of magnetization in a narrow temperature interval, which allows actuating a beam cantilever in an external temperature and magnetic field gradient to generate kinetic energy and convert it into electrical energy. By frequency up-conversion, slow thermal cycles are converted into rapid mechanical oscillations with frequencies up to 200 Hz and amplitudes up to 20% of beam length. First demonstrator devices show power densities in the order of 1 µW/cm3
AB - This work presents two novel principles for thermal energy harvesting based on ferromagnetic and metamagnetic shape memory thin films. Both principles exploit the large change of magnetization in a narrow temperature interval, which allows actuating a beam cantilever in an external temperature and magnetic field gradient to generate kinetic energy and convert it into electrical energy. By frequency up-conversion, slow thermal cycles are converted into rapid mechanical oscillations with frequencies up to 200 Hz and amplitudes up to 20% of beam length. First demonstrator devices show power densities in the order of 1 µW/cm3
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M3 - Conference contribution
AN - SCOPUS:85096892352
T3 - MikroSystemTechnik Kongress 2015 "MEMS, Mikroelektronik, Systeme", Proceedings
SP - 270
EP - 273
BT - MikroSystemTechnik Kongress 2015 "MEMS, Mikroelektronik, Systeme", Proceedings
PB - VDE Verlag GmbH
Y2 - 26 October 2015 through 28 October 2015
ER -