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Int. J. Mol. Sci. 2013, 14(7), 12953-12969; doi:10.3390/ijms140712953
Article

Bending of Layer-by-Layer Films Driven by an External Magnetic Field

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Received: 15 February 2013 / Revised: 18 May 2013 / Accepted: 8 June 2013 / Published: 24 June 2013
(This article belongs to the Special Issue Self-Assembled Soft Matter Nanostructures at Interfaces)
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Abstract

We report on optimized architectures containing layer-by-layer (LbL) films of natural rubber latex (NRL), carboxymethyl-chitosan (CMC) and magnetite (Fe3O4) nanoparticles (MNPs) deposited on flexible substrates, which could be easily bent by an external magnetic field. The mechanical response depended on the number of deposited layers and was explained semi-quantitatively with a fully atomistic model, where the LbL film was represented as superposing layers of hexagonal graphene-like atomic arrangements deposited on a stiffer substrate. The bending with no direct current or voltage being applied to a supramolecular structure containing biocompatible and antimicrobial materials represents a proof-of-principle experiment that is promising for tissue engineering applications in biomedicine.
Keywords: magnetic nanoparticles; natural rubber latex; carboxymethyl-chitosan; layer-by-layer assembly; molecular dynamics magnetic nanoparticles; natural rubber latex; carboxymethyl-chitosan; layer-by-layer assembly; molecular dynamics
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Miyazaki, C.M.; Riul, A., Jr.; Dos Santos, D.S., Jr.; Ferreira, M.; Constantino, C.J.L.; Pereira-da-Silva, M.A.; Paupitz, R.; Galvão, D.S.; Jr., O.N.O. Bending of Layer-by-Layer Films Driven by an External Magnetic Field. Int. J. Mol. Sci. 2013, 14, 12953-12969.

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