1. Fabrication of newspaper-based potentiometric platforms for flexible and disposable ion sensors.
- Author
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Yoon, Jo Hee, Kim, Kyung Hoon, Bae, Nam Ho, Sim, Gap Seop, Oh, Yong-Jun, Lee, Seok Jae, Lee, Tae Jae, Lee, Kyoung G., and Choi, Bong Gill
- Subjects
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POTENTIOMETRY , *DETECTORS , *BIODEGRADABLE materials , *STABILITY (Mechanics) , *CHEMICAL stability , *PARYLENE - Abstract
Paper-based materials have attracted a great deal of attention in sensor applications because they are readily available, biodegradable, inexpensive, and mechanically flexible. Although paper-based sensors have been developed, but important obstacles remian, which include the retention of chemical and mechanical stabilities when paper is wetted. Herein, we develop a simple and scalable process for fabrication of newspaper-based platforms by coating of parylene C and patterning of metal layers. As-prepared parylene C-coated newspaper (PC-paper) provides low-cost, disposable, and mechanically and chemically stable electrochemical platforms for the development of potentiometric ion sensors for the detection of electrolyte cations, such as, H + and K + . The pH and K + sensors produced show near ideal Nernstian sensitivity, good repeatability, good ion selectivity, and low potential drift. These disposable, flexible ion sensors based on PC-paper platforms could provide new opportunities for the development of point-of-care testing sensors, for diagnostics, healthcare, and environment testing. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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