Busca avançada
Ano de início
Entree
(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

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

Texto completo
Autor(es):
Grein-Iankovski, Aline [1, 2] ; Graillot, Alain [3] ; Radiom, Milad [1] ; Loh, Watson [2] ; Berret, Jean-Francois [1]
Número total de Autores: 5
Afiliação do(s) autor(es):
[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
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: Journal of Physical Chemistry C; v. 124, n. 47, p. 26068-26075, NOV 25 2020.
Citações Web of Science: 0
Resumo

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)

Processo FAPESP: 17/04571-3 - Nanopartículas Janus magnéticas
Beneficiário:Aline Grein Iankovski
Linha de fomento: Bolsas no Brasil - Pós-Doutorado
Processo FAPESP: 18/16330-3 - Nanopartículas termo e magneto-responsivas para a fabricação de novos biomarcadores
Beneficiário:Aline Grein Iankovski
Linha de fomento: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado