Gas identification with graphene plasmons

Tutkimustuotos: Lehtiartikkelivertaisarvioitu


JulkaisuNature Communications
Lehden numero1
TilaJulkaistu - 1 joulukuuta 2019
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu


  • Hai Hu
  • Xiaoxia Yang
  • Xiangdong Guo
  • Kaveh Khaliji
  • Sudipta Romen Biswas
  • F. Javier García de Abajo
  • Tony Low
  • Zhipei Sun

  • Qing Dai


  • National Center for Nanoscience and Technology Beijing
  • Graduate University of Chinese Academy of Sciences
  • University of Minnesota
  • Barcelona Institute of Science and Technology (BIST)


Identification of gas molecules plays a key role a wide range of applications extending from healthcare to security. However, the most widely used gas nano-sensors are based on electrical approaches or refractive index sensing, which typically are unable to identify molecular species. Here, we report label-free identification of gas molecules SO2, NO2, N2O, and NO by detecting their rotational-vibrational modes using graphene plasmon. The detected signal corresponds to a gas molecule layer adsorbed on the graphene surface with a concentration of 800 zeptomole per mu m(2), which is made possible by the strong field confinement of graphene plasmons and high physisorption of gas molecules on the graphene nanoribbons. We further demonstrate a fast response time (

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