光学技术, 2019, 45 (1): 58, 网络出版: 2019-04-16  

光子晶体液体浓度传感器

Photonic crystal liquid concentration sensor
作者单位
新疆大学 物理科学与技术学院, 新疆 乌鲁木齐 830046
摘要
为了有效地检测混合液体的浓度,运用平面波展开法与光子晶体禁带理论,研究了光子晶体禁带宽度和混合液体浓度的对应关系。以砷化镓(GaAs)为背景材料的三角格子空气孔二维光子晶体内分别填充不同浓度的水醋酸、水甲醇混合液体,讨论了混合液体浓度与介电常数对二维光子晶体禁带宽度的影响。模拟结果表明,在温度保持不变的情况下,浓度在0~0.60mol/kg之间变化时二维光子晶体TE模没出现光子晶体禁带而TM模出现的光子晶体禁带宽度随着混合液体浓度和介电常数的增大而逐渐变窄且向高频区域移动。这一结果为生物化学中混合液体浓度的检测方面提供很好的参考依据。
Abstract
In order to effectively detect concentration of mixed liquid , the corresponding relationship between band gap of photonic crystal and concentration of mixed liquid is studied by using plane wave expansion method and photonic crystal band gap theory. Two-dimensional photonic crystal with GaAs as the background material is filled with water-acetic acid and water-methanol mixed liquid with different concentration , influence of the concentration and dielectric constant on the band gap of two-dimensional photonic crystals are discussed . The simulation results show that when the temperature remains constant and the concentration changing from 0 to 0.60 mol/kg , didn’t appear any photonic crystal bandgap with TE mode and photonic crystal band gap with TM mode becomes gradually narrower and moves toward the higher frequency region when the concentration and the dielectric constant of the mixed liquid increase. This result provides a good reference for the detection of concentration of mixed liquid in biochemistry.

阿卜杜外力江·伊米提, 阿不都热苏力·阿不都热西提. 光子晶体液体浓度传感器[J]. 光学技术, 2019, 45(1): 58. A.YIMITI, A.ABUDUREXITI. Photonic crystal liquid concentration sensor[J]. Optical Technique, 2019, 45(1): 58.

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