Dresden 2014 – wissenschaftliches Programm
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MM: Fachverband Metall- und Materialphysik
MM 9: Functional Materials II - Oxides and Alloys
MM 9.3: Vortrag
Montag, 31. März 2014, 12:15–12:30, IFW A
Recent progress in development of Fe-Pd ferromagnetic shape memory films and foils for biomedical applications — Y. Ma1, A. Arabi-Hashemi1, A. Landgraf1, U. Allenstein1,3, M. Zink3, and •S.G. Mayr1,2,3 — 1Leibniz-Institut für Oberflächenmodifizierung e.V. Leipzig — 2Translationszentrum für regenerative Medizin — 3Fakultät für Physik und Geowissenschaften, Universität Leipzig
Due to their excellent biocompatibility, Fe-Pd based ferromagnetic shape memory alloys are highly promising materials for use as actuators or sensors in biomedical applications. Yet, their application within these areas has been hampered by unresolved issues, including i) synthesis as freestanding single-crystals in the desired fct martensite phase, ii) optimization for a martensite temperature located sufficiently above body temperature, iii) activation of twin boundary motion and iv) mechanical coupling to cells. The present contribution will review recent progress in coping with challenges i)-iv), employing molecular beam epitaxy for single crystal synthesis, ion beam irradiation for tuning martensite transformation, film-lift-off by a tailored etching approach, followed by functionalization with biomolecules for interfacing to cells. In doing so, we particularly focus on the physical understanding, how synthesis parameters affect resulting properties and functionality.