期刊
OPTICS EXPRESS
卷 20, 期 19, 页码 21693-21701出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.20.021693
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- National Science Council of Taiwan [NSC 100-2622-E-006-039-CC3]
A tapered fiber localized surface plasmon resonance (LSPR) sensor is demonstrated for refractive index sensing and label-free biochemical detection. The sensing strategy relies on the interrogation of the transmission intensity change due to the evanescent field absorption of immobilized gold nanoparticles on the tapered fiber surface. The refractive index resolution based on the interrogation of transmission intensity change is calculated to be 3.2 x 10(-5) RIU. The feasibility of DNP-functionalized tapered fiber LSPR sensor in monitoring anti-DNP antibody with different concentrations spiked in buffer is examined. Results suggest that the compact sensor can perform qualitative and quantitative biochemical detection in real-time and thus has potential to be used in biomolecular sensing applications. (C)2012 Optical Society of America
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