TY - GEN
T1 - Directed assembly of magnetic nanoparticles in polymers
T2 - Nanotechnology 2010: Advanced Materials, CNTs, Particles, Films and Composites - 2010 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2010
AU - Fragouli, Despina
AU - Buonsanti, Raffaella
AU - Bertoni, Giovanni
AU - Sangregorio, Claudio
AU - Villafiorita, Francesca
AU - La Tegola, Carola
AU - Torre, Bruno
AU - Cingolani, Roberto
AU - Athanassiou, Athanassia
PY - 2010
Y1 - 2010
N2 - We present a facile technique for the preparation of plastic films containing aligned magnetic nanowires with anisotropic behavior. Solutions of magnetic nanoparticles mixed with polymers are drop casted on a substrate under the application of a weak magnetic field, and upon solvent evaporation the nanoparticles are assembled following the field's direction forming thus aligned nanowires into the polymer. The application of the magnetic field in different time intervals reveals the kinetics of the nanowires formation in the film, while microscopy techniques reveal their morphology and their positioning in the film. The resulting nanocomposites exhibit magnetic and mechanical anisotropy. The efficiency and universality of the method is proved by the assembly of the magnetic nanoparticles with diverse polymers, heterostructures and organic molecules resulting in composite materials for a wide range of applications. Finally, the method is successfully applied during the photopolymerization process, allowing the formation of patterns with aligned nanowires.
AB - We present a facile technique for the preparation of plastic films containing aligned magnetic nanowires with anisotropic behavior. Solutions of magnetic nanoparticles mixed with polymers are drop casted on a substrate under the application of a weak magnetic field, and upon solvent evaporation the nanoparticles are assembled following the field's direction forming thus aligned nanowires into the polymer. The application of the magnetic field in different time intervals reveals the kinetics of the nanowires formation in the film, while microscopy techniques reveal their morphology and their positioning in the film. The resulting nanocomposites exhibit magnetic and mechanical anisotropy. The efficiency and universality of the method is proved by the assembly of the magnetic nanoparticles with diverse polymers, heterostructures and organic molecules resulting in composite materials for a wide range of applications. Finally, the method is successfully applied during the photopolymerization process, allowing the formation of patterns with aligned nanowires.
KW - Anisotropic behavior
KW - Field directed assembly
KW - Magnetic nanoparticles
KW - Nanocomposites
KW - Nanowires
UR - http://www.scopus.com/inward/record.url?scp=78049442086&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:78049442086
SN - 9781439834015
T3 - Nanotechnology 2010: Advanced Materials, CNTs, Particles, Films and Composites - Technical Proceedings of the 2010 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2010
SP - 854
EP - 857
BT - Nanotechnology 2010
Y2 - 21 June 2010 through 24 June 2010
ER -