| Texto completo | |
| Autor(es): |
Braga, Thyago S.
;
Sequalini, Isadora B.
;
da Silva, Thiago T.
;
Marcellino, Gabriela M.
;
Corat, Evaldo J.
;
Vieira, Nirton C. S.
Número total de Autores: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE; v. N/A, p. 7-pg., 2024-11-08. |
| Resumo | |
This study presents the electrochemical reduction of graphene oxide (GO) to reduced graphene oxide (rGO) directly onto flexible interdigitated gold electrodes and its application as a strain sensor. GO reduction is achieved using cyclic voltammetry (CV). Remarkably, only a single CV cycle transformed GO into rGO to obtain low-resistance (approximate to 100 Omega) devices. The reduction of GO is confirmed using Raman spectroscopy and electrical measurements. rGO on flexible interdigitated gold electrodes exhibits graphene-like characteristics when used as electrolyte-gated field-effect transistors. The fabricated devices display a gauge factor (GF) of approximate to 3.7 in the 0-794 mu epsilon range. This value represents a substantial improvement, approximate to 60% higher than traditional metallic strain sensors, which have a GF of approximate to 2.1. Most importantly, the rGO strain sensor exhibits fast response (1.1 s) and recovery (0.92 s) times. The rGO sensor is mounted on a clamp with an adjustable diameter, which reveals exceptional flexibility and bendability without damage or degradation. These results highlight the potential of rGO for advancing strain-sensing applications, offering promising opportunities for the future of this technology. (AU) | |
| Processo FAPESP: | 19/18572-7 - Novos materiais de carbono: suas aplicações espaciais, ambientais e spin offs relevantes |
| Beneficiário: | Evaldo Jose Corat |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 18/07508-3 - Explorando as propriedades elétricas e ópticas de derivados de grafeno para detecção de cianotoxinas |
| Beneficiário: | Nirton Cristi Silva Vieira |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |