Detailseite
Projekt
Magnetoviscosity of nanorod ferrofluids synthesized by virus templating
Antragstellerinnen / Antragsteller
Professor Carl Emil Krill III, Ph.D.; Professor Dr. Kornelius Nielsch; Professorin Dr. Christina Wege
Fachliche Zuordnung
Experimentelle Physik der kondensierten Materie
Förderung
Förderung von 2006 bis 2011
Projektkennung
Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 26109002
A two-year research project is proposed to prepare novel nanorod ferrofluids by virustemplate- assisted synthesis of ferromagnetic nanowires and nanotubes. If our current understanding of the magnetic-field-induced viscosity enhancement in ferrofluids is correct, then rod-shaped ferromagnetic nanoparticles should impart a dramatically improved stability against the shear thinning that plagues conventional ferrofluids, suggesting that nanorod ferrofluids would be ideal for usage in adaptive damping systems or in any other application benefiting from force transfer via liquids. The primary goals of this project are (1) to prepare large amounts of the highly stable, non-pathogenic tobacco mosaic virus (TMV) from plants or yeast cultures; (2) to employ TMV as a biotemplate for the growth of ferromagnetic nanowires and nanotubes of controlled aspect ratio; (3) to suspend the nanorods in a suitable carrier fluid and characterize the magnetic properties of the resulting ferrofluid; (4) to measure the frequency-dependent complex viscosity of nanorod ferrofluids and compare it to that of conventional ferrofluids; and (5) to test the predictions of theoretical models for the viscosity enhancement as a function of the aspect ratio of suspended ferromagnetic particles.
DFG-Verfahren
Schwerpunktprogramme
