Tapered optical fiber sensor based on localized surface plasmon resonance
Tapered optical fiber sensor based on localized surface plasmon resonance
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DOI：
10.1364/oe.20.021693
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发表时间：
2012-09-10
期刊：
影响因子：
3.8
通讯作者：
Chui, Hsiang-Chen
中科院分区：
文献类型：
--
作者：
Lin, Hsing-Ying;Huang, Chen-Han;Chui, Hsiang-Chen
提出了一种用于折射率传感和无标记生化检测的锥形光纤局域表面等离子体共振(LSPR)传感器。该传感策略依赖于对由于固定化的金纳米颗粒在锥形光纤表面的瞬逝场吸收而引起的传输强度变化的询问。基于透射光强度变化询问的折射率分辨率被计算为3.2×10(-5)RIU。考察了DNP功能化锥形光纤LSPR传感器在检测缓冲液中添加不同浓度的抗DNP抗体的可行性。结果表明，该传感器可以实时进行定性和定量的生化检测，具有潜在的生物分子传感应用前景。(C)2012年美国光学学会
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