| Autor: |
Maria I. Marques, Luiz Pereira, Ana Palmeira-de-Oliveira, João Manuel De Carvalho Gomes, José Martinez-de-Oliveira, Joana Diniz Da Fonseca |
| Rok vydání: |
2015 |
| Předmět: |
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| Zdroj: |
Materials Today: Proceedings. 2:236-241 |
| ISSN: |
2214-7853 |
| DOI: |
10.1016/j.matpr.2015.04.029 |
| Popis: |
Odor sensors were fabricated by depositing organic polymeric semiconductor on screen-printed interdigitated electrodes. These sensors were tested with odors from different origins and in particular a culture of vaginal candidosis, in order the get insight about their use for a medical based diseases control. Both capacitive and resistive sensors were tested with different electrodes size/separations and composition. It was found that the carbon based electrodes with a size/separation of 300 μm shows the best results with changes in on/off sate with a considerable amplitude suitable for electronic detection. Differential analysis shows a fast and stable transitions. The sensors response are interpreted by means of the absorption/adsorption of the analyte molecules by the nano-structured sense-active organic thin film that changes the electrical response. With the obtained results, a possible use of such sensors in home-made, low-cost, disposable and efficient medical diagnosis is discussed. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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