• 文献标题:   Fabrication of a novel carbon nanotube & graphene based device for gas detection
  • 文献类型:   Article
  • 作  者:   KHOSRAVI Y, ABDI Y, ARZI E
  • 作者关键词:   cnt, graphene, gas sensor
  • 出版物名称:   PHYSICA SCRIPTA
  • ISSN:   0031-8949 EI 1402-4896
  • 通讯作者地址:   Univ Tehran
  • 被引频次:   0
  • DOI:   10.1088/1402-4896/aac056
  • 出版年:   2018

▎ 摘  要

We present a novel, simple method for gas detection using a nano-device fabricated on a silicon substrate. The proposed method is based on changing the density of state (DOS) of a graphene sheet during the gas absorption. Fabrication of the carbon nanotube (CNT) and graphene based device for gas detection includes silicon micro machining and the growth of vertically aligned CNTs. Field emission between the as-grown CNTs and the graphene sheet which is placed on top of the CNTs is measured at a liquid nitrogen temperature to obtain the DOS of the structure in different gas environments. The measured local DOS of the structure using the fabricated device showed that each gas had its own signatory spectrum. We believe that this method will open up a new and simple way of fabricating a portable gas spectroscope.