Graphene-Based FET Detector forE. coliK12 Real-Time Monitoring and Its Theoretical Analysis
| Autor: | Jieyi Zhu, Changan Zhu, Ning Xi, Fuzhou Niu, Jie Yang |
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| Rok vydání: | 2016 |
| Předmět: |
Fabrication
Materials science Article Subject Biosensor device 02 engineering and technology 01 natural sciences Signal law.invention law lcsh:Technology (General) 0103 physical sciences Hardware_INTEGRATEDCIRCUITS Electrical and Electronic Engineering 010306 general physics Instrumentation Graphene business.industry Detector Electrical engineering Biasing 021001 nanoscience & nanotechnology Control and Systems Engineering lcsh:T1-995 Surface modification Field-effect transistor 0210 nano-technology business |
| Zdroj: | Journal of Sensors, Vol 2016 (2016) |
| ISSN: | 1687-7268 1687-725X |
| Popis: | This paper presents a theoretical analysis for a graphene-based FET real-time detector of the target bacteriaE. coliK12. The motivation for this study is to design a sensor device for detection of bacteria in food and water in order to guarantee food safety. Graphene is chosen as our material for sensor design, which has outstanding electrical, physical, and optical performance. In our sensor structure, graphene-based solution gate field effect transistor (FET) is the device model; fabrication and functionalization protocol are presented together in this paper. What is more, a real-time signal display system is the accompanied equipment for our designed biosensor device. In this system, the sensor bias current signalIdswould change obviously when the target bacteria are attached to the sensor surface. And the bias currentIdsincreases when theE. coliconcentration increases. In the latter part, a theoretical interpretation of the sensor signal is to explain the bias currentIdsincreasing after theE. coliK12 attachment. |
| Databáze: | OpenAIRE |
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