journal article·2010-04-27Open access

Dynamical Formation of Spatially Localized Arrays of Aligned Nanowires in Plastic Films with Magnetic Anisotropy

Despina Fragouli, Raffaella Buonsanti, Giovanni Bertoni, Claudio Sangregorio, Claudia Innocenti, Andrea Falqui, Dante Gatteschi, Pantaleo Davide Cozzoli, Athanassia Athanassiou, Roberto Cingolani

ACS Nano· Volume 4· Issue 4

Abstract

We present a simple technique for magnetic-field-induced formation, assembling, and positioning of magnetic nanowires in a polymer film. Starting from a polymer/iron oxide nanoparticle casted solution that is allowed to dry along with the application of a weak magnetic field, nanocomposite films incorporating aligned nanocrystal-built nanowire arrays are obtained. The control of the dimensions of the nanowires and of their localization across the polymer matrix is achieved by varying the duration of the applied magnetic field, in combination with the evaporation dynamics. These multifunctional anisotropic free-standing nanocomposite films, which demonstrate high magnetic anisotropy, can be used in a wide field of technological applications, ranging from sensors to microfluidics and magnetic devices.
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Research context

OpenAlex topics: Characterization and Applications of Magnetic Nanoparticles · Block Copolymer Self-Assembly · Electrohydrodynamics and Fluid Dynamics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Center for Bio-Molecular Nanotechnologies (CBN) of IIT@NNL-UniLe-Lecce, via Barsanti c/o STAMMS, Arnesano 73010 Lecce, Italy

Scuola Superiore ISUFI, Università del Salento, Distretto Tecnologico ISUFI

National Nanotechnology Laboratory of CNR-INFM, Unità di Ricerca IIT, via per Arnesano km 5, 73100 Lecce, Italy

Fondazione Istituto Italiano di Tecnologia (IIT), via Morego 30, I-16163 Genova, Italy

INSTM Research Unit-Dipartimento di Chimica, Università di Firenze, via della Lastruccia 3, 50019 Sesto F.no, Firenze, Italy

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