Laser-fabricated flexible nanographene-based sensor for pH detection in saliva
| Autor: | Almudena Rivadeneyra, Noel Rodriguez, Inmaculada Ortiz-Gomez, Luisa Petti, Francisco J. Romero, Biresaw Demelash Abera, Paolo Lugli, Diego P. Morales, Alfonso Salinas |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Graphene Capacitive sensing 010401 analytical chemistry Analytical chemistry Substrate (chemistry) 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Capacitance 0104 chemical sciences law.invention law Electrode Cyclic voltammetry 0210 nano-technology Layer (electronics) Polyimide |
| Zdroj: | 2020 IEEE SENSORS. |
| Popis: | Salivary pH is one of the indicators of the dental health of a person. To enable fast and easy dental health observations, we developed a flexible capacitive pH sensor using graphene oxide (GO) sensing layer on the laser-induced graphene (LIG) electrode produced from a polyimide (PI) film acting both as LIG precursor material and substrate. Cyclic voltammetry (CV) was used as a measurement technique. The sensor showed the characteristic CV behavior of capacitive elements, and it presented an unequivocal response to the pH level in saliva. The area under the CV curve was used to extract the specific capacitance (C s ) and correlated to the corresponding pH level measured. |
| Databáze: | OpenAIRE |
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