Fiber-optic chemical and biochemical probes based on localized surface plasmon resonance
Fiber-optic chemical and biochemical probes based on localized surface plasmon resonance
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DOI：
10.1016/j.snb.2005.02.034
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发表时间：
2006-01-17
影响因子：
8.4
通讯作者：
Lin, TJ
中科院分区：
文献类型：
--
作者：
Chau, LK;Lin, YF;Lin, TJ
报道了一种新型的基于反射的局域表面等离子体共振光纤化学和生化传感探头。该传感器基于来自光纤的固定波长的内部反射光的强度测量，其中光纤的未包层部分上的自组装金纳米颗粒的消光截面随着金表面附近环境的不同折射率而变化。基于反射的局部表面等离子体共振光纤探针已被证明能够直接感测“光谱沉默”的Ni 2+离子和皮摩尔水平的链霉亲和素和葡萄球菌肠毒素B的无标记检测。(c)2005 Elsevier B.V.保留所有权利。
A novel reflection-based localized surface plasmon resonance fiber-optic probe for chemical and biochemical sensing is reported. The sensor is based on intensity measurement of the internal reflected light at a fixed wavelength from an optical fiber where the extinction cross-section of self-assembled gold nanoparticles on the unclad portion of the optical fiber changes with different refractive index of the environment near the gold surface. The reflection-based localized surface plasmon resonance fiber-optic probe has been shown to be capable of direct sensing of the "spectroscopically silent" Ni2+ ion and label-free detection of streptavidin and staphylococcal enterotoxin B at the picomolar level. (c) 2005 Elsevier B.V. All rights reserved.