The influence of heat generation on the conventional process of LSPR based sensing has not been explored thus far. Therefore, a need exists to draw attention toward the heat generation issue during LSPR sensing as it may affect the refractive index of the analyte, leading to incorrect sensory conclusions. This manuscript addresses the connection between the photo-thermal effect and LSPR. We numerically analyzed the heat performance of a gold cladded nanotip. The numerical results predict a change in the micro-scale temperature in the microenvironment near the nanotip. These numerical results predict a temperature increase of more than 20 K near the apex of the nanotip, which depends on numerous factors including the input optical power and the diameter of the fiber. We analytically show that this change in the temperature influences a change in the refractive index of the microenvironment in the vicinity of the nanotip. In accordance with our numerical and analytical findings, we experimentally show an LSPR shift induced by a change in the input power of the source. We believe that our work will bring the importance of temperature dependence in nanotip based LSPR sensing to the fore.

中文翻译：

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等离子Nanotip中的LSPR感测的光热效应。

到目前为止，尚未探讨热量产生对基于LSPR的传感的传统过程的影响。因此，有必要提请注意LSPR感测期间的发热问题，因为它可能影响分析物的折射率，从而导致错误的感官结论。该手稿解决了光热效应和LSPR之间的联系。我们数值分析了覆金纳米尖端的热性能。数值结果预测纳米尖端附近的微环境中的微尺度温度的变化。这些数值结果预测，在纳米尖端的顶点附近温度升高超过20 K，这取决于许多因素，包括输入光功率和纤维直径。我们分析表明，温度的这种变化会影响纳米尖端附近微环境的折射率变化。根据我们的数值和分析发现，我们通过实验显示了源输入功率变化引起的LSPR漂移。我们相信，我们的工作将把基于温度的依赖在基于纳米尖端的LSPR传感中的重要性带到最前沿。