Dresden 2017 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 57: Thin Films, Nanostructures and Nanoparticles I
CPP 57.6: Vortrag
Donnerstag, 23. März 2017, 11:45–12:00, ZEU 114
Printed nanostructured polymer films embedded with magnetic nanoparticles — •Senlin Xia1, Ezzeldin Metwalli1, Matthias Opel2, Paul A. Staniec3, Eva M. Herzig4, and Peter Müller-Buschbaum1 — 1TU München, Physik-Department, LS Funktionelle Materialien, James-Franck-Str. 1, 85748 Garching — 2Walther-Meissner-Institut, Bayerische Akademie der Wissenschaften, 85748 Garching — 3Beamline I22, Diamond Light Source, Harwell, OX11 0DE, United Kingdom — 4TU München, Munich School of Engineering, Herzig Group, Lichtenbergstr. 4, 85748 Garching
Nanostructured polymer films containing magnetic nanoparticles (NPs) are promising materials due to their potential applications in the areas of high-density storage and magnetic sensors. Owing to the advantages, like large-scale production and energy saving, printing techniques were employed to fabricate hybrid films composed of maghemite NPs and PS-b-PMMA diblock copolymer (DBC). External magnetic fields were applied during the printing process to guide the NPs within the polymer matrix. The mesoscopic structure of PS-coated maghemite NPs within the DBC films was investigated as a function of the NP concentration using optical microscopy, AFM, SEM and GISAXS. The PS-coated NPs were selectively dispersed in the PS domains of the lamella-structured hybrid films. At high NP concentrations, the coalescence of NPs into large micro-sized metal-oxide wires was observed. The superparamagnetic behavior of the hybrid film was proved using a superconducting quantum interference device magnetometer.