LSPR Coupling and Distribution of Interparticle Distances between Nanoparticles in Hydrogel on Optical Fiber End Face.
LSPR Coupling and Distribution of Interparticle Distances between Nanoparticles in Hydrogel on Optical Fiber End Face.
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DOI：
10.3390/s17122723
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发表时间：
2017-11-25
期刊：
影响因子：
--
通讯作者：
Hjelme DR
中科院分区：
文献类型：
--
作者：
Muri HI;Hjelme DR
我们报道了一种新的基于局域表面等离子体共振（LSPR）的光纤（OF）结构，该结构具有传感器应用的潜力。LSPR-OF系统是通过将金纳米颗粒（GNP）固定在纤维端面上聚合的水凝胶液滴中来制造的。这种设计与早期的设计相比有几个优点。它大大增加了可用于传感的纳米颗粒（NP）的数量，它提供了对NP密度的精确控制，并且NP位于真正的3D水性环境中。OF-水凝胶设计也与低成本制造兼容。LSPR-OF平台可以测量刺激响应性水凝胶的体积变化或测量与NP表面上受体的结合。通过利用这两种效应，它也可以用作双参数传感器。我们目前的结果，从概念验证实验探索的性质的LSPR和颗粒间的距离的GNP-水凝胶的OF设计，通过表征的分布在水凝胶中的NP之间的距离，水凝胶的折射率和LSPR属性的峰位置，幅度和线宽的水凝胶去溶胀控制与pH值的解决方案。
We report on a new localized surface plasmon resonance (LSPR)-based optical fiber (OF) architecture with a potential in sensor applications. The LSPR-OF system is fabricated by immobilizing gold nanoparticles (GNPs) in a hydrogel droplet polymerized on the fiber end face. This design has several advantages over earlier designs. It dramatically increase the number nanoparticles (NP) available for sensing, it offers precise control over the NP density, and the NPs are positioned in a true 3D aqueous environment. The OF-hydrogel design is also compatible with low-cost manufacturing. The LSPR-OF platform can measure volumetric changes in a stimuli-responsive hydrogel or measure binding to receptors on the NP surface. It can also be used as a two-parameter sensor by utilizing both effects. We present results from proof-of-concept experiments exploring the properties of LSPR and interparticle distances of the GNP-hydrogel OF design by characterizing the distribution of distances between NPs in the hydrogel, the refractive index of the hydrogel and the LSPR attributes of peak position, amplitude and linewidth for hydrogel deswelling controlled with pH solutions.
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影响因子：
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作者：
Stetefeld, Jorg;McKenna, Sean A;Patel, Trushar R
通讯作者：
Patel, Trushar R
影响因子：
3.3
作者：
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2.4
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作者：
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通讯作者：
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4.3
作者：
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通讯作者：
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