at Google ScholarTitle data
Xia, Senlin ; Metwalli, Ezzeldin ; Opel, Matthias ; Staniec, Paul A. ; Herzig, Eva M. ; Müller-Buschbaum, Peter:
Printed thin magnetic films based on diblock copolymer and magnetic nanoparticles.
In: ACS Applied Materials & Interfaces.
Vol. 10
(2018)
Issue 3
.
- pp. 2982-2991.
ISSN 1944-8252
DOI: https://doi.org/10.1021/acsami.7b16971
Abstract in another language
Printing techniques have been well established for large-scale production and have developed to be effective in controlling the morphology and thickness of the film. In this work, printing is employed to fabricate magnetic thin films composed of polystyrene coated maghemite nanoparticles (γ-Fe2O3 NPs) and polystyrene-block-poly(methyl methacrylate) (PS-b-PMMA) diblock copolymer. By applying an external magnetic field during the print coating step, oriented structures with a high content of nanoscale magnetic particles are created. The morphology of the magnetic films and the arrangement of NPs within the polymer matrix are characterized with real and reciprocal space techniques. Due to the applied magnetic field, the magnetic NPs self-assemble into microscale sized wires with controlled widths and separation distances, endowing hybrid films with a characteristic magnetic anisotropy. At the nanoscale level, due to the PS coating, the NPs disperse as single particles at low NP concentrations. The NPs self-assemble into nanosized clusters inside the PS domains when the NP concentration increases. Due to a high loading of uniformly dispersed magnetic NPs across the whole printed film, a strong sensitivity to an external magnetic field is achieved. The enhanced superparamagnetic property of the printed films renders them promising candidate materials for future magnetic sensor applications.
Further data
| Item Type: | Article in a journal |
|---|---|
| Refereed: | Yes |
| Additional notes: | Article ASAP |
| Keywords: | GISAXS; diblock copolymer; magnetic nanoparticles; printing; superparamagnetic behavior |
| Institutions of the University: | Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Juniorprofessor Experimental Physics VII - Dynamics and Structure Formation > Juniorprofessor Experimental Physics VII - Dynamics and Structure Formation - Juniorprof. Dr. Eva M. Herzig Faculties Faculties > Faculty of Mathematics, Physics und Computer Science Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Juniorprofessor Experimental Physics VII - Dynamics and Structure Formation |
| Result of work at the UBT: | Yes |
| DDC Subjects: | 500 Science > 530 Physics |
| Date Deposited: | 12 Jan 2018 09:57 |
| Last Modified: | 05 Apr 2018 08:20 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/41670 |