| Full text | |
| Author(s): |
Paula, Kelly T.
;
Santos, Sabrina N. C.
;
Facure, Murilo H. M.
;
Araujo, Francineide L.
;
Andrade, Marcelo M. B.
;
Correa, Daniel S.
;
Mendonca, Cleber R.
Total Authors: 7
|
| Document type: | Journal article |
| Source: | Journal of Applied Physics; v. 133, n. 5, p. 10-pg., 2023-02-07. |
| Abstract | |
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) | |
| FAPESP's process: | 17/10582-8 - Production and characterization of graphene quantum dots and their application in chemical sensors |
| Grantee: | Murilo Henrique Moreira Facure |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 18/11283-7 - Nonlinear photonics: spectroscopy and advanced processing of materials |
| Grantee: | Cleber Renato Mendonça |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 18/22214-6 - Towards a convergence of technologies: from sensing and biosensing to information visualization and machine learning for data analysis in clinical diagnosis |
| Grantee: | Osvaldo Novais de Oliveira Junior |
| Support Opportunities: | Research Projects - Thematic Grants |