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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Template-Free Preparation of Thermoresponsive Magnetic Cilia Compatible with Biological Conditions

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Grein-Iankovski, Aline [1, 2] ; Graillot, Alain [3] ; Radiom, Milad [1] ; Loh, Watson [2] ; Berret, Jean-Francois [1]
Total Authors: 5
[1] Univ Paris, CNRS, Matiere & Syst Complexes, F-75013 Paris - France
[2] Univ Campinas UNICAMP, Inst Chem, BR-13083970 Campinas - Brazil
[3] Specif Polymers, ZAC Via Domitia, F-34160 Castries - France
Total Affiliations: 3
Document type: Journal article
Source: Journal of Physical Chemistry C; v. 124, n. 47, p. 26068-26075, NOV 25 2020.
Web of Science Citations: 0

Bio-inspired materials are commonly used in the development of functional devices. The fabrication of artificial cilia mimicking the biological functions has emerged as a promising strategy for fluid manipulation in miniaturized systems. In this study, we propose a different physicochemical insight for the preparation of magnetic cilia based on the temperature-triggered reversible assembly of coated iron oxide nanoparticles in a bio-compatible template-free approach. The length of the prepared cilia could be tuned between 10 and 100 mu m reaching aspect ratios up to 100 in a very dense array of flexible structures with persistence lengths around 8 mu m. Magnetic actuation of the cilia revealed robust structures (over several hours of actuation) with a wide range of bending amplitudes resulting from high susceptibility of the filaments. The results demonstrate that the proposed strategy is an efficient and versatile alternative for templated fabrication methods and producing cilia with remarkable characteristics and dimensions within the template-free approaches. (AU)

FAPESP's process: 17/04571-3 - Magnetic Janus nanoparticles
Grantee:Aline Grein Iankovski
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 18/16330-3 - Self-assembly of thermo- and magneto-responsive building blocks for the fabrication of novel biomarkers
Grantee:Aline Grein Iankovski
Support type: Scholarships abroad - Research Internship - Post-doctor