Thermal energy harvesting based on ferromagnetic shape memory alloy microactuation

Autor:	Makoto Ohtsuka, B. Haefner, Marcel Gueltig, Manfred Kohl
Rok vydání:	2013
Předmět:	Cantilever Materials science business.industry Shape-memory alloy Computer Science::Other law.invention Ferromagnetism law Electromagnetic coil Electronic engineering Optoelectronics Faraday cage business Energy harvesting Thermal energy Power density
Zdroj:	2013 Transducers & Eurosensors XXVII: The 17th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS & EUROSENSORS XXVII).
DOI:	10.1109/transducers.2013.6627388
Popis:	This paper presents a new principle of harvesting thermal energy at small temperature differences based on bidirectional actuation of a ferromagnetic shape memory alloy (FSMA) cantilever. The thermally induced change of magnetization of the ferromagnetic cantilever tip is used to generate a current according to Faraday's law. The layout, fabrication and performance of a first demonstrator are shown operating at frequencies and amplitudes of 80 Hz and several hundred microns, respectively. For a pick-up coil of 1000 turns, the maximum current is about 10 μA corresponding to a power density of 0.8 μW/cm3.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e80799d5e76e6bb014c2fa86597c4e15 https://doi.org/10.1109/transducers.2013.6627388 Zobrazit plný text záznamu