Plasmonic Gas Sensing with Graphene Nanoribbons

Kaveh Khaliji, Sudipta Romen Biswas, Hai Hu, Xiaoxia Yang, Qing Dai, Sang Hyun Oh, Phaedon Avouris, Tony Low

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The main challenge to exploiting plasmons for gas vibrational mode sensing is the extremely weak infrared absorption of gas species. In this work, we explore the possibility of trapping free-gas molecules via surface adsorption, optical, or electrostatic fields to enhance gas-plasmon interactions and to increase plasmon-sensing ability. We discuss the relative strengths of these trapping forces and find gas adsorption in a typical nanoribbon array plasmonic setup produces measurable dips in optical extinction of magnitude 0.1% for a gas concentration of about the parts per thousand level.

Original languageEnglish (US)
Article number011002
JournalPhysical Review Applied
Issue number1
StatePublished - Jan 22 2020


Cite this

Khaliji, K., Biswas, S. R., Hu, H., Yang, X., Dai, Q., Oh, S. H., Avouris, P., & Low, T. (2020). Plasmonic Gas Sensing with Graphene Nanoribbons. Physical Review Applied, 13(1), [011002].