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.

中文翻译：

---

利用薄膜黑色素的可印刷和柔性石墨烯pH传感器用于生理学应用

由于潜在应用的广泛范围，以低成本批量生产的高灵敏度pH传感器的应用引起了巨大的商业兴趣。这些领域包括工业加工，生物技术和医学诊断，尤其是在即时医疗（POC）设备的开发中。通过使用丝网印刷工艺设计和生产了一种基于石墨烯和色素黑色素（PGM）的新型可印刷电化学pH传感器，该丝网印刷工艺可以扩大规模以用于潜在的商业应用。我们证明了在5至8的pH范围内具有高灵敏度的pH传感器（62 mV pH -1±7），与许多现有设备相比，具有很高的稳定性和优越的性能，使其适用于生理应用。