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Printable and flexible graphene pH sensors utilising thin film melanin for physiological applications / Zari Tehrani; S P Whelan; Bernard Mostert; J V Paulin; Muhammad Ali; Ehsaneh Daghigh Ahmadi; C F O Graeff; Owen Guy; David Gethin

2D Materials, Volume: 7, Issue: 2, Start page: 024008

Swansea University Authors: Zari, Tehrani, Bernard, Mostert, Muhammad, Ali, Ehsaneh, Daghigh Ahmadi, Owen, Guy, David, Gethin

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Abstract

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)...

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Published in: 2D Materials
ISSN: 2053-1583
Published: IOP Publishing 2020
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa53387
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Abstract: 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.
Keywords: graphene, pH Sensor, melanin, screen print, blood plasma, low cost manufacturing
College: College of Engineering
Issue: 2
Start Page: 024008