On the performance of surface plasmon resonance based fibre optic sensor with different bimetallic nanoparticle alloy combinations
On the performance of surface plasmon resonance based fibre optic sensor with different bimetallic nanoparticle alloy combinations
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DOI：
10.1088/0022-3727/41/5/055106
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发表时间：
2008-03-07
影响因子：
3.4
通讯作者：
Mohr, Gerhard J.
中科院分区：
文献类型：
--
作者：
Sharma, Anuj K.;Mohr, Gerhard J.
在这项工作中，我们研究了不同的双金属纳米颗粒合金组合用于基于表面等离子体共振技术的光纤传感器的性能。本分析考虑的金属包括银、金、铜和铝。对不同双金属纳米颗粒合金组合的传感器性能进行了数值评估和比较。从灵敏度、信噪比(SNR)和感应层折射率值的作用范围三个方面分析了该方法的性能。在比较的基础上，根据一些Logistic准则，预测了最佳的双金属合金组合以及所需的合金成分比。该双金属纳米颗粒合金组合物能够同时提供更大的灵敏度、信噪比和工作范围，这是任何单一金属纳米颗粒层都不可能实现的。
In this work, we have investigated the capability of different bimetallic nanoparticle alloy combinations to be used in fibre optic sensors based on the technique of surface plasmon resonance. The metals considered for this analysis are silver, gold, copper and aluminium. The performance of the sensor with different bimetallic nanoparticle alloy combinations is evaluated and compared numerically. The performance is analysed in terms of three parameters: sensitivity, signal-to-noise ratio (SNR) and operating range for the sensing layer refractive index values. On the basis of the comparison and some logistic criteria, the best possible bimetallic alloy combinations along with a requisite alloy composition ratio are predicted. The bimetallic nanoparticle alloy combination is capable of simultaneously providing larger values of sensitivity, SNR and operating range, which is not possible with any single metallic nanoparticle layer.