Infrared metamaterial for surface-enhanced infrared absorption spectroscopy: pushing the frontier of ultrasensitive on-chip sensing

IF 6.7 3区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Optomechatronics Pub Date : 2021-01-01 DOI:10.1080/15599612.2021.1953199

Hong Zhou, Dongxiao Li, Xindan Hui, X. Mu

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引用次数: 32

Abstract

Abstract Surface-enhanced infrared absorption (SEIRA) spectroscopy is a powerful technique that overcomes the issue of low molecular absorption cross-sections in infrared spectroscopy. Due to the collective oscillations of electrons in the infrared regime, SEIRA using resonant metamaterial provides greatly enhanced (up to 107) electromagnetic fields extending up to tens of nanometers from the metamaterial. The enhanced near-field enables spectroscopic analysis and ultrasensitive on-chip sensing of molecules. This interesting characteristic has aroused widespread attention from researchers to SEIRA technology, and various SEIRA-based sensing applications have been continuously emerging. Optimization of the signal enhancement to obtain high sensing performance is the developing main thread of SEIRA technology. In this Review, we provide a basic understanding of SEIRA’s sensing mechanism and theoretical model. With this background, several SEIRA optimizing methods are discussed, ranging from design, materials to algorithms. Additionally, perspectives about the future development trends of SEIRA technologies are discussed.

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用于表面增强红外吸收光谱的红外超材料:推动超灵敏片上传感的前沿

摘要表面增强红外吸收光谱（SEIRA）是一种强大的技术，它克服了红外光谱中低分子吸收截面的问题。由于电子在红外区域的集体振荡，使用谐振超材料的SEIRA提供了从超材料延伸到数十纳米的大大增强的（高达107）电磁场。增强的近场使光谱分析和分子的超灵敏芯片传感成为可能。这一有趣的特性引起了研究人员对SEIRA技术的广泛关注，各种基于SEIRA的传感应用不断涌现。优化信号增强以获得高传感性能是SEIRA技术发展的主线。在这篇综述中，我们对SEIRA的传感机制和理论模型有了基本的了解。在此背景下，讨论了从设计、材料到算法的几种SEIRA优化方法。此外，还对SEIRA技术的未来发展趋势进行了展望。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Optomechatronics 工程技术-工程：电子与电气

CiteScore

9.30

自引率

0.00%

发文量

审稿时长

3 months

期刊介绍： International Journal of Optomechatronics publishes the latest results of multidisciplinary research at the crossroads between optics, mechanics, fluidics and electronics. Topics you can submit include, but are not limited to: -Adaptive optics- Optomechanics- Machine vision, tracking and control- Image-based micro-/nano- manipulation- Control engineering for optomechatronics- Optical metrology- Optical sensors and light-based actuators- Optomechatronics for astronomy and space applications- Optical-based inspection and fault diagnosis- Micro-/nano- optomechanical systems (MOEMS)- Optofluidics- Optical assembly and packaging- Optical and vision-based manufacturing, processes, monitoring, and control- Optomechatronics systems in bio- and medical technologies (such as optical coherence tomography (OCT) systems or endoscopes and optical based medical instruments)