| Texto completo | |
| Autor(es): |
Paula, Kelly T.
;
Santos, Sabrina N. C.
;
Facure, Murilo H. M.
;
Araujo, Francineide L.
;
Andrade, Marcelo M. B.
;
Correa, Daniel S.
;
Mendonca, Cleber R.
Número total de Autores: 7
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of Applied Physics; v. 133, n. 5, p. 10-pg., 2023-02-07. |
| Resumo | |
Graphene-based materials, such as graphene oxide (GO), have been receiving much attention due to their graphene-like properties and compatibility with other materials. At the same time, novel printing methods have been developed for fabricating high-resolution patterns, such as Laser-Induced Forward Transfer (LIFT), which allows microscale transferring of a variety of materials to distinct substrates, enabling the design of micro- and nanodevices for biomedical and opto-electronic application. In this work, we propose the use of LIFT with fs-laser pulses for creating high-resolution interdigitated electrodes of tetraethyl orthosilicate functionalized with GO. The fs-LIFT approach successfully allowed micro-patterning of lines with widths on the order of 2 mu m, with threshold energy of 70 nJ, and the reduction of graphene oxide to fabricate silica/GO films in an efficient, controlled, and localized way, without material degradation. As a proof of principle, interdigitated electrodes fabricated by fs-LIFT were successfully used as the sensing units of an impedimetric electronic tongue for taste recognition and heavy metals ions detection (Al3+, Hg2+, Co2+, and Cu2+) at different concentrations of 100 nmol l(-1), 10 mu mol l(-1), and 1 mmol l(-1). (AU) | |
| Processo FAPESP: | 17/10582-8 - Produção e caracterização de quantum dots de grafeno e sua aplicação em sensores químicos |
| Beneficiário: | Murilo Henrique Moreira Facure |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 18/11283-7 - Fotônica não linear: espectroscopia e processamento avançado de materiais |
| Beneficiário: | Cleber Renato Mendonça |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 18/22214-6 - Rumo à convergência de tecnologias: de sensores e biossensores à visualização de informação e aprendizado de máquina para análise de dados em diagnóstico clínico |
| Beneficiário: | Osvaldo Novais de Oliveira Junior |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |