A sprayed graphene transistor platform for rapid and low-cost chemical sensing
| Autor: | Benji Fenech-Salerno, Martin Holicky, Chengning Yao, Anthony E. G. Cass, Felice Torrisi |
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| Přispěvatelé: | Engineering & Physical Science Research Council (EPSRC), Engineering & Physical Science Research Council (E |
| Rok vydání: | 2023 |
| Předmět: |
ION-SELECTIVE ELECTRODES
Technology Science & Technology GRAPHITE DEVICES 02 Physical Sciences CHALLENGES Chemistry Multidisciplinary Physics PHASE EXFOLIATION Materials Science Materials Science Multidisciplinary Physics Applied Chemistry BULK OPTODES 10 Technology Physical Sciences SENSORS LIQUID Science & Technology - Other Topics General Materials Science Nanoscience & Nanotechnology ELECTROCHEMICAL BIOSENSORS 03 Chemical Sciences FIELD-EFFECT TRANSISTOR |
| Popis: | We demonstrate a novel and versatile sensing platform, based on electrolyte-gated graphene field-effect transistors, for easy, low-cost and scalable production of chemical sensor test strips. The Lab-on-PCB platform is enabled by low-boiling, low-surface-tension sprayable graphene ink deposited on a substrate manufactured using a commercial printed circuit board process. We demonstrate the versatility of the platform by sensing pH and Na+ concentrations in an aqueous solution, achieving a sensitivity of 143 ± 4 μA per pH and 131 ± 5 μA per log10Na+, respectively, in line with state-of-the-art graphene chemical sensing performance. |
| Databáze: | OpenAIRE |
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