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Plasmonic Nanosensors: Review and Prospect

机译：等离子体纳米传感器：回顾与展望

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摘要

Recent progress in plasmon-based sensors has greatly overcome the limitations of conventional optical sensors, in terms of sensitivity, tunability, photostability, and in vivo applicability, by employing nanostructured materials. In this review, we summarize three types of plasmon-based nanosensors categorized by the geometries of sensing platforms as plasmonic transducers, which are planar nanofilm, periodic nanoarrays, and individual nanoparticles, respectively. We then introduce the notable accomplishments to enhance the sensing performances for each sensing platform. Additionally, we present recent works for signal enhancement strategy based on the targeted nanoassemblies of particles, which can be applied to all plasmon-based sensing platforms. The focus of this review will be on how plasmonic nanostructures can be applied to detect biological and chemical analytes, and notable approaches to improve the sensitivity.
机译：通过使用纳米结构材料，基于等离激元的传感器的最新进展已极大地克服了常规光学传感器在灵敏度，可调性，光稳定性和体内应用性方面的局限性。在这篇综述中，我们总结了三种类型的基于等离激元的纳米传感器，它们按传感平台的几何形状分类为等离激元换能器，分别是平面纳米膜，周期性纳米阵列和单个纳米颗粒。然后，我们介绍值得注意的成就，以增强每个感测平台的感测性能。此外，我们介绍了基于粒子的纳米组装体的信号增强策略的最新工作，该方法可应用于所有基于等离激元的传感平台。本文的重点将放在如何将等离激元纳米结构用于检测生物和化学分析物，以及提高灵敏度的显着方法。

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