On-Column Vapor Sensing with Free-Space Coupled 2D Photonic Crystal Slabs

被引：0
|
作者：
Biswas, P. [1 ]
Liu, Y. [1 ]
Palit, P. [1 ]
Zhou, W. [1 ]
Sun, Y. [1 ]
机构：
[1] Univ Texas Arlington, Dept Elect Engn, 416 Yates St, Arlington, TX 76019 USA
来源：
OPTICS, PHOTONICS AND LASERS | 2018年
关键词：
Photonic crystals; Photonic crystal slabs; Gas sensing; Gas chromatography; Optical sensing;
D O I：
暂无
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report here a compact on-column micro-gas chromatography (mu GC) detector based on free-space coupled 2D photonic crystal slabs (PCS). The micro-fabricated silicon column is coated with a layer of stationary phase for vapor separation. The PCS is coated with a thin layer of polymer for vapor detection. The Fano resonance mode supported by the PCS is utilized to detect the refractive index (RI) change and thickness change in the polymer layer caused by the adsorption of vapor molecules. Different gaseous samples have been utilized to demonstrate the gas separation and gas detection. The results have demonstrated that the 2D PCS is a promising on-column nondestructive mu GC detector.
引用
收藏
页码：140 / 142
页数：3
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