Micro/Nanofiber with Hollow Silica Nanoparticles Thin-Film for Airborne Molecular Contaminants Real-Time Sensing
Micro/Nanofiber with Hollow Silica Nanoparticles Thin-Film for Airborne Molecular Contaminants Real-Time Sensing
复制标题
具有空心二氧化硅纳米粒子薄膜的微/纳米纤维用于空气传播分子污染物实时传感
DOI：
10.1155/2018/4950787
复制
发表时间：
2018
影响因子：
1.5
通讯作者：
Lu Haibing
中科院分区：
文献类型：
--
作者：
Ni Longfei;Zhou Guorui;Miao Xinxiang;Yuan Xiaodong;Kumar Rahul;Liu Hao;Jiang Yilan;Zou Xinshu;Zhou Hai;Lu Haibing
一种新的化学传感方法检测空气中的分子污染物（AMC）或化合物的演示，通过使用单模光纤（OMF）涂有空心二氧化硅纳米粒子（HSNs）。在锥形微光纤表面挥发的AMC浓度影响微光纤的传输损耗。采用高精度电控装置制备了锥形OMF，并采用弯月面涂覆法制备了HSN涂层。测试了三种不同直径、相同涂层厚度的有机微光纤的传输损耗，以确定AMC浓度与涂层有机微光纤传输损耗的关系。实验结果表明，传输损耗随着AMC浓度的增加而增加。直径为2.5 μm的涂层OMF对挥发性二甲基硅油的灵敏度为0.0263 dB/mg/m3，直径为5 μm和6 μm的涂层OMF的灵敏度分别为0.0024和0.0018 dB/mg/m3。因此，所提出的涂覆的OMF可以用于封闭空间中的AMC传感。
A novel chemical sensing approach detecting airborne molecular contaminants (AMCs) or compounds is demonstrated by using single-mode optical microfibre (OMF) coated with hollow silica nanoparticles (HSNs). The concentration of AMCs, which were volatilized on the surface of the tapered microfibre coated with HSNs, influences the transmission loss of the microfibre. Tapered OMF was fabricated using a high-precision electrically controlled setup, and coatings of HSNs were prepared by meniscus coating method. The transmission loss of three OMFs with different diameters and the same thick coating were tested to determine the relationship between AMC concentrations and transmission loss of coated OMFs. Experimental results showed that the transmission loss increases with increasing concentration of AMCs. The sensitivity for volatile simethicone was 0.0263 dB/mg/m3 obtained by the coated OMF with diameter of 2.5 μm, and the sensitivity values of coated OMF with diameters of 5 μm and 6 μm were 0.0024 and 0.0018 dB/mg/m3, respectively. Thus the proposed coated OMF can be used in enclosed space for AMCs sensing.