| 학회 |
한국재료학회 |
| 학술대회 |
2017년 봄 (05/17 ~ 05/19, 목포 현대호텔) |
| 권호 |
23권 1호 |
| 발표분야 |
G. 나노/박막 재료 분과 |
| 제목 |
Defect mediated molecular interactions in graphene-based glucose sensors |
| 초록 |
Graphene has been considered as a promising sensing material, but its sensing mechanism is still controversial. In this work, we have introduced the engineered edge defects in graphene channel to study role of defects in graphene-based biological sensors. Compared with normal graphene sensors, we investigate the sensing characteristics, multiple cyclic characteristics and Raman spectroscopy of the sensors, especially for the sensors based on bare, glucose oxidase (enzyme) immobilized, and linker- glucose oxidase immobilized graphene and graphene meshes. With this approach, we found that the strong chemisorption to the defective sites in graphene cause a severe irreversible response to glucose, but this irreversible response was greatly diminished with glucose oxidase immobilization. On the other hand, after immobilization with only glucose oxidase, the graphene mesh sensor exhibits highest sensitivity with reliable multiple cycle operation. |
| 저자 |
Sun Sang Kwon1, Su Han Kim2, Jae Hyeok Shin3, Won Jun Chang4, Won Il Park1
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| 소속 |
1Division of Materials Science & Engineering, 2Hanyang Univ., 3Seoul 04763, 4Korea |
| 키워드 |
graphene; graphene mesh; enzymatic sensor; edge-functionalization; multiple cycle operation
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| E-Mail |
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