| 학회 |
한국고분자학회 |
| 학술대회 |
2017년 봄 (04/05 ~ 04/07, 대전컨벤션센터) |
| 권호 |
42권 1호 |
| 발표분야 |
대학원생 구두발표 (발표15분) |
| 제목 |
Sensitivity Enhancement of Optical Sensing via Graphene-Propagating Surface Plasmon Coupling |
| 초록 |
Surface plasmons at metal/dielectric interface resonate with the light generating the evanescent field at the interface which is highly sensitive to the change in refractive index of the medium. These characteristics have been utilized as a basis of surface plasmon resonance-based sensors, providing label-free and real-time sensing format. However, the sensitivity of SPR sensors still needs to be improved to achieve single molecule sensing. Herein, we employed graphene from different preparation methods; graphene oxide and reduced GO using Hummer’s method, N-doped reduced graphene oxide, graphene from chemical vapor deposition and non-oxidized graphene flake were incorporated on top of Au-film with the aim to increase electric field through coupling of graphene plasmons with propagating SPs from Au-film. Refractive index sensing and immune-sensing were conducted and the optical contribution of graphene for the overall sensitivity enhancement mechanism could be verified. |
| 저자 |
정경화1, 이준상1, 이경은2, 박혜성3, 전석우2, 김상욱2, 김동하1
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| 소속 |
1이화여자대, 2한국과학기술원, 3UNIST |
| 키워드 |
Surface plasmon resonance-based sensor; graphene; refractive index sensing; optical sensing
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| E-Mail |
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