Centre for Optical and Electromagnetic Research, State Key Laboratory of Modern Optical Instrumentation, Zhejiang Provincial Key Laboratory for Sensing Technologies, Zhejiang University, Hangzhou 310058, China.
Zhejiang Lab, Hangzhou 310000, China.
Sensors (Basel). 2019 Jan 14;19(2):300. doi: 10.3390/s19020300.
An ethanol vapor sensor based on a microfiber with a quantum-dot (QD) gel coating is proposed and demonstrated. The QD gel was made from UV glue as the gel matrix and CdSe/ZnS QDs with a concentration of 1 mg/mL. The drawing and coating processes were conducted by using a simple and low-cost system developed for this study. Bending, ethanol sensing, temperature response, and time response tests were carried out, respectively. The experimental results showed that the fabricated sensor had a high sensitivity of -3.3%/ppm, a very low temperature cross-sensitivity of 0.17 ppm/°C, and a fast response time of 1.1 s. The easily fabricated robust structure and the excellent sensing performance render the sensor a promising platform for real ethanol sensing applications.
提出并演示了一种基于涂覆量子点（QD）凝胶的微光纤乙醇蒸汽传感器。QD 凝胶由 UV 胶作为凝胶基质和浓度为 1mg/mL 的 CdSe/ZnS QDs 制成。拉伸和涂覆过程使用为这项研究开发的简单且低成本的系统进行。分别进行了弯曲、乙醇传感、温度响应和时间响应测试。实验结果表明，所制备的传感器具有 3.3%/ppm 的高灵敏度、非常低的 0.17 ppm/°C 的温度交叉灵敏度和 1.1s 的快速响应时间。这种易于制造的坚固结构和出色的传感性能使得该传感器成为用于实际乙醇传感应用的有前途的平台。
