| Texto completo | |
| Autor(es): |
de Melo, Fernando Menegatti
[1, 2]
;
Mattioni, V, Joao
;
Dias, Fernando
[2]
;
Fu, Ying
[3]
;
Toma, Henrique E.
[4]
Número total de Autores: 5
|
| Afiliação do(s) autor(es): | [1] Univ Sao Paulo, Inst Chem, Supramol Nanotech Lab, Ave Prof Lineu Prestes 748, BR-05508000 Sao Paulo - Brazil
[2] Met Chek Brasil Ind & Comercio, Res & Dev Dept, Rua Ind 135, BR-12926674 Braganca Paulista, SP - Brazil
[3] Halmstad Univ, Sch Informat Technol, SE-30118 Halmstad - Sweden
[4] Mattioni, Joao, V, Univ Sao Paulo, Inst Chem, Supramol Nanotech Lab, Ave Prof Lineu Prestes 748, BR-05508000 Sao Paulo - Brazil
Número total de Afiliações: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | NANOSCALE ADVANCES; v. 3, n. 12, p. 3593-3604, JUN 21 2021. |
| Citações Web of Science: | 0 |
| Resumo | |
The production of materials that contain more than one functional constituent, the so-called multifunctional materials, is quite relevant in advanced technology. By acting as building blocks, nanoparticles can be suitably explored for generating higher-order multifunctional structures. In this regard, herein, a special clustered magneto-fluorescent superstructure has been developed for non-destructive detection of flaws and shallow subsurface discontinuities in industrial ferromagnetic materials. The strategy consists of the solvophobic-controlled assembly of organic-based maghemite cores and water-based II-VI quantum dots, in the presence of hexadecyltrimethyl-ammonium bromide, CTAB, as a compatibilizer agent. This composite exhibited a high magnetic response (sigma(max) = 66 emu g(-1)) and uniform size, in addition to tunable optical properties (QY = 78%). The strategy of utilizing nanoparticles as magneto-fluorescent nanoprobes to identify tiny slits represents a great advance, for improving the capability of precisely revealing the fracture boundary locations by visual real-time inspection. The nanoscale probes exhibit a low signal-to-noise ratio and a higher competitive performance in relation to the existing micrometric detection systems. (AU) | |
| Processo FAPESP: | 19/14771-5 - Desenvolvimento de nanopartículas superparamagnéticas funcionalizadas com agentes complexantes para a captura e aproveitamento de metais estratégicos |
| Beneficiário: | João Victor Mattioni |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado Direto |
| Processo FAPESP: | 18/21489-1 - Nanotecnologia supramolecular - design, materiais e dispositivos |
| Beneficiário: | Henrique Eisi Toma |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |