The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)
- Volume 58 Issue 1
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- Pages.147-154
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- 2009
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- 1975-8359(pISSN)
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- 2287-4364(eISSN)
A Disposable Grating-Integrated Multi-channel SPR Sensor Chip for Detection of Biomolecule
회절격자가 집적된 일회용 다중채널 SPR 생체분자 검출 칩
- Published : 2009.01.01
Abstract
This paper presents a grating~integrated SPR (Surface Plasmon Resonance) sensor chip for simple and inexpensive biomolecule detection. The grating-integrated SPR sensor chip has two sensing channels having a nano grating for SPR coupling. An external mirror is used for multi channel SPR sensing. The present sensor chip replaces bulky and expensive optical components, such as fiber-optic switches or special shaped prisms, resulting in a simple and inexpensive wavelength modulated multi-channel SPR sensing system. We fabricate a SPR sensor chip integrated with 835 nm-pitch gratings by a micromolding technique to reduce the fabrication cost. In the experimental characterization, the refractive index sensitivity of each sensing channel is measured as
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