Liu Bin, Xie Wuyuan, Li Han, Wang Yanrong, Cai Daoping, Wang Dandan, Wang Lingling, Liu Yuan, Li Qiuhong, Wang Taihong
Pen-Tung Sah Institute of Micro-Nano Science and Technology of Xiamen University, Xiamen361005, China.
Department of Physics, School of Physics and Mechanical & Electrical Engineering, Xiamen University, Xiamen361005, China.
Sci Rep. 2014 Apr 10;4:4639. doi: 10.1038/srep04639.
Significant efforts have been paid to exploring the fundamental properties of topological insulators (TIs) in recent years. However, the investigation of TIs as functional materials for practical device applications is still quite limited. In this work, electronic sensors based on Bi2Te3 nanoplates were fabricated and the sensing performance was investigated. On exposure to different surrounding environments, significant changes in the conducting properties were observed by direct electrical measurements. These results suggest that nanostructured TIs hold great potential for sensing applications.
近年来，人们在探索拓扑绝缘体（TIs）的基本性质方面付出了巨大努力。然而，将拓扑绝缘体作为实际器件应用的功能材料的研究仍然相当有限。在这项工作中，制备了基于Bi2Te3纳米片的电子传感器，并对其传感性能进行了研究。在暴露于不同的周围环境时，通过直接电学测量观察到导电性能发生了显著变化。这些结果表明，纳米结构的拓扑绝缘体在传感应用方面具有巨大潜力。
