All-Dielectric Surface-Enhanced Infrared Absorption-Based Gas Sensor Using Guided Resonance,ACS Applied Materials & Interfaces

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All-Dielectric Surface-Enhanced Infrared Absorption-Based Gas Sensor Using Guided Resonance
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2018-10-17 00:00:00 , DOI: 10.1021/acsami.8b16623
Yuhua Chang _{1,

2} , Dihan Hasan _{1,

2} , Bowei Dong _{1,

2} , Jingxuan Wei _{1,

2} , Yiming Ma _{1,

2} , Guangya Zhou ₃ , Kah Wee Ang ₁ , Chengkuo Lee _{1,

2}

Affiliation

The surface-enhanced infrared absorption (SEIRA) technique has been focusing on the metallic resonator structures for decades, exploring different approaches to enhance sensitivity. Although the high enhancement is achieved, the dissipative loss and strong heating are the intrinsic drawbacks of metals. Recently, the dielectric platform has emerged as a promising alternative. In this work, we report a guided resonance-based all-dielectric photonic crystal slab as the platform for SEIRA. The guided resonance-induced enhancement in the effective path length and electric field, together with gas enrichment polymer coating, leads to a detection limit of 20 ppm in carbon dioxide (CO₂) sensing. This work explores the feasibility to apply low loss all-dielectric structures as a surface enhancement method in the transmission mode.

中文翻译：

基于介电的全介电表面增强型红外吸收气体传感器

表面增强红外吸收（SEIRA）技术数十年来一直专注于金属谐振器结构，探索了各种方法来提高灵敏度。尽管实现了高增强，但是耗散损耗和强加热是金属的固有缺点。最近，电介质平台已成为一种有前途的替代方案。在这项工作中，我们报告了基于导向共振的全介电光子晶体平板作为SEIRA的平台。在有效路径长度和电场的引导下，共振诱导的增强，以及气体富集的聚合物涂层，导致二氧化碳（CO _2）的检出限为20 ppm）感应。这项工作探索了在传输模式下应用低损耗全介电结构作为表面增强方法的可行性。

更新日期：2018-10-17

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