CD盘纳米结构传感器的应用研究

将CD光盘的聚碳酸酯基底纳米条纹作为光子晶体传感器,考察了其传感性质。在40~120℃温度范围内,CD光子晶体的反射光谱强度由64.5%上升到99.1%,且温度与反射光谱强度的变化呈线性响应,相关系数R2为0.999 5。结果表明,该聚碳酸酯光子晶体膜可以作为温度传感器。另外,还考察了不同的有机醇对传感器的反射光谱强度的影响。发现在甲醇中,最大反射率与作用时间呈线性关系,在乙醇、正丙醇、正丁醇中也有同样的规律,不同醇的介电常数与反射光谱强度也有线性关系,表明本传感器还可以作为醇的检测手段。

Application of CD-ROM as Photonic Crystal Sensor

CD-ROM, made of polycarbonate substrate membrane withnano-stripe, was used as pho-tonic crystal sensor in this article. Spectral reflectance rate of this CD photonic crystal sensor rose from 64 . 5% to 99 . 1% linearly when temperature changed from 40 to 120 ℃, and the correlation coefficient R2 was 0. 999 5. Therefore, this CD polycarbonate membrane photonic crystal can be used as a temperature sensor. This sensor also was used as an organic alcohol sensor. The CD pho-tonic crystal sensor was inserted into methanol and the experimental results showed that the maximum spectral reflectance rate reduced linearly with the reaction time. Other organic alcohols like ethanol, N-propanol and N-butanol all had the same linear tendency. The relation of dielectric constants of these organic alcohols and spectral reflectance rate reducing was linear relation too. All these means that this CD photonic crystal sensor also can be used as the tool of the detection of organic alcohol.