漸逝波型紅外光光學化學感測器

Overview of Evanescent-Wave Infrared Chemical Sensors

楊吉斯(Jyisy Yang)

《化學》 59卷2期 (2001/06) Pp. 245-251

https://doi.org/10.6623/chem.2001029

摘要

漸逝波(Evanescent Wave)在近年被巧妙的應用至光學化學感測器中。而此種感測法具有直接、快速、方便以及全光譜測量之優點。雖然光波從紫外光區到長波之紅外光區皆有學者提出以此種原理感測化合物，但因紅外光區具有提供化學分子結構以及其化學環境等資訊之能力，因此本文將著重在介紹此光譜區之感測方法，從其基本原理介紹開始，進而對其針對靈敏度、選擇性以及小型化發展趨勢加以介紹。

關鍵字

漸逝波 ； 光學感測器 ； 紅外光 ； 近紅外光 ； 光波 ； 電磁波

並列摘要

Infrared chemical sensors can provide a convenient and sensitive way to detect organic compounds in various forms of samples. Among the existed infrared sensing techniques, evanescent-wave type of sensor was found to be highly feasible for sensing organic compounds, especially in aqueous solutions. This type of sensor can directly detect compounds because the evanescent field can penetrate out of the sensing element in a short distance. Any compounds surrounding within the evanescent field can be sensed directly. Therefore, this article focuses on the introduction of the basic sensing principle, the sensitivity improvements in the past and the future perspective of sensing device.

並列關鍵字

evanescent wave ； optical sensor ； infrared ； near infrared ； electromagnetic radiation