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Detection of nitrous oxide using infrared optical plasmonics coupled with carbon nanotubes
Nanoscale Advances ( IF 4.6 ) Pub Date : 2020-09-16 , DOI: 10.1039/d0na00525h Thomas Allsop 1, 2, 3, 4, 5 , Mohammed Al Araimi 6, 7, 8, 9, 10 , Ron Neal 10, 11, 12 , Changle Wang 5, 8, 9, 10, 13 , Phil Culverhouse 10, 11, 12 , Juan D. Ania-Castañón 1, 2, 3, 4 , David J. Webb 5, 8, 9, 10, 13 , Paul Davey 10, 11, 12 , James M. Gilbert 10, 14, 15, 16 , Alex Rozhin 5, 8, 9, 10, 13
Nanoscale Advances ( IF 4.6 ) Pub Date : 2020-09-16 , DOI: 10.1039/d0na00525h Thomas Allsop 1, 2, 3, 4, 5 , Mohammed Al Araimi 6, 7, 8, 9, 10 , Ron Neal 10, 11, 12 , Changle Wang 5, 8, 9, 10, 13 , Phil Culverhouse 10, 11, 12 , Juan D. Ania-Castañón 1, 2, 3, 4 , David J. Webb 5, 8, 9, 10, 13 , Paul Davey 10, 11, 12 , James M. Gilbert 10, 14, 15, 16 , Alex Rozhin 5, 8, 9, 10, 13
Affiliation
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Interest in gas sensing using functionalised carbon nanotubes is a major area of research that utilises changes in their electrical properties induced by the reaction with a specific gas. This paper describes specific gas sensing on an optical platform consisting of a 2-dimensional nano-structured plasmonic array of nano-antennae/nanowires, with topological dimensions of mean radius of 130 nm, typical length of 20 μm and a period of 500 nm. The array is created by the spatial compaction of germanium oxides when the material interacts with ultra-violet irradiance, it can support infra-red localised surface plasmons. Carbon nanotubes are deposited upon the surface of the plasmonic platform followed by the application of the polyethyleneimine polymer. The resulting nanomaterials-photonic platform gives rise to the selective response to nitrous oxide gases, which are a major contributor to atmospheric degradation. We achieve the device sensitivity up to 100% atmosphere of nitrous oxide with a detection limit of 109 ppm, a maxiumum response time of nineteen seconds and yielding a full-scale deflection of +5.7 nm. This work demonstrates that the optical properties of specific carbon nanotubes can be used in a wide range of sensing applications offering a new sensing paradigm.
中文翻译：
红外光学等离子体与碳纳米管耦合检测一氧化二氮
对使用功能化碳纳米管进行气体传感的兴趣是研究的主要领域，该领域利用了与特定气体反应引起的电学性能变化。本文描述了在光学平台上的特定气体传感，该光学平台由纳米天线/纳米线的二维纳米结构等离子体阵列组成，其拓扑尺寸为平均半径为130 nm，典型长度为20μm，周期为500 nm。当材料与紫外线辐射相互作用时，通过锗氧化物的空间压缩形成阵列，它可以支撑红外局部表面等离子体激元。将碳纳米管沉积在等离子体平台的表面上，然后再涂覆聚乙烯亚胺聚合物。所得的纳米材料-光子平台引起对一氧化二氮气体的选择性响应，这是造成大气降解的主要因素。我们在高达100％的一氧化二氮气氛下实现了设备灵敏度，检测极限为109 ppm，最大响应时间为19秒，产生的全尺寸偏转为+5.7 nm。这项工作表明，特定的碳纳米管的光学性质可用于提供新的传感范例的各种传感应用中。
更新日期：2020-10-13
中文翻译：
红外光学等离子体与碳纳米管耦合检测一氧化二氮
对使用功能化碳纳米管进行气体传感的兴趣是研究的主要领域，该领域利用了与特定气体反应引起的电学性能变化。本文描述了在光学平台上的特定气体传感，该光学平台由纳米天线/纳米线的二维纳米结构等离子体阵列组成，其拓扑尺寸为平均半径为130 nm，典型长度为20μm，周期为500 nm。当材料与紫外线辐射相互作用时，通过锗氧化物的空间压缩形成阵列，它可以支撑红外局部表面等离子体激元。将碳纳米管沉积在等离子体平台的表面上，然后再涂覆聚乙烯亚胺聚合物。所得的纳米材料-光子平台引起对一氧化二氮气体的选择性响应，这是造成大气降解的主要因素。我们在高达100％的一氧化二氮气氛下实现了设备灵敏度，检测极限为109 ppm，最大响应时间为19秒，产生的全尺寸偏转为+5.7 nm。这项工作表明，特定的碳纳米管的光学性质可用于提供新的传感范例的各种传感应用中。
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