Printable and flexible graphene pH sensors utilising thin film melanin for physiological applications

Autor(es)

Tehrani, Z. ^{[1, 2]} ; Whelan, S. P. ^{[1, 2]} ; Mostert, A. B. ^[3] ; Paulin, V, J. ; Ali, M. M. ^[1] ; Ahmadi, E. Daghigh ^[1] ; Graeff, C. F. O. ^[4] ; Guy, O. J. ^[3] ; Gethin, D. T. ^[2]

Afiliação do(s) autor(es)

^[1] Swansea Univ, Coll Engn, Ctr Nano Hlth, Swansea SA2 8PP, W Glam - Wales

^[2] Swansea Univ, Coll Engn, Welsh Ctr Printing & Coating, Swansea SA1 8EN, W Glam - Wales

^[3] Swansea Univ, Coll Sci, Dept Chem, Swansea SA2 8PP, W Glam - Wales

^[4] Sao Paulo State Univ UNESP, Sch Sci, Dept Phys, Bauru, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: 2D MATERIALS; v. 7, n. 2 APR 2020.
• Citações Web of Science: 0

Resumo

The application of highly sensitive pH sensors manufactured in volume at low cost has great commercial interest due to an extensive array of potential applications. Such areas include industrial processing, biotechnology and medical diagnostics particularly in the development of point of care (POC) devices. A novel printable electrochemical pH sensor based on graphene and pigment melanin (PGM), was designed and produced by using a screen printing process that enables up scaling for potential commercial application. We demonstrate a highly sensitive pH sensor (62 mV pH(-1) +/- 7) over a pH range from 5 to 8, with high stability and superior performance when compared with a number of existing devices and making it suitable for physiological applications. (AU)

• Processo FAPESP: 15/23000-1 - Transistores orgânicos de efeito de campo baseado em arquitetura vertical utilizando corantes de origem natural como camada ativa
• Beneficiário: João Vitor Paulin
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 18/02411-1 - Sistemas de injeção de prótons baseados em derivados de melanina
• Beneficiário: João Vitor Paulin
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado