Cheng Biyao, Yang Shuming, Liu Tao, Vazinishayan Ali
State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
Sensors (Basel). 2018 Apr 17;18(4):1234. doi: 10.3390/s18041234.
Nanowires have been widely studied due to their outstanding mechanical and electrical properties; however, their practical applications are limited to the lack of an effective technique for controlled assembly. In the present work, zinc oxide (ZnO) nanowire arrays were assembled via a combing process using a makeup brush and the nanodevice was fabricated. The current–voltage (I–V) and ultraviolet (UV) characteristics of the device indicate stable and repeatable electrical properties. The carbon monoxide (CO) sensing properties were tested at operating temperatures of 200, 300 and 400 °C. It was found that ZnO based sensor exhibited the highest sensitivity to CO at 300 °C due to the change of dominant oxygen species. Comparing with others result, the sensitivity of the fabricated sensor exhibits higher sensing performance. The sensing mechanism of the CO sensor is also discussed.
由于具有出色的机械和电学性能，纳米线已得到广泛研究；然而，由于缺乏有效的可控组装技术，其实际应用受到限制。在本工作中，使用化妆刷通过梳理工艺组装了氧化锌（ZnO）纳米线阵列，并制造了纳米器件。该器件的电流-电压（I-V）和紫外（UV）特性表明其电学性能稳定且可重复。在200、300和400℃的工作温度下测试了一氧化碳（CO）传感性能。发现基于ZnO的传感器在300℃时对CO表现出最高灵敏度，这是由于主要氧物种的变化。与其他结果相比，所制备传感器的灵敏度表现出更高的传感性能。还讨论了CO传感器的传感机制。
