Plasmonic Gas Sensing with Graphene Nanoribbons

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

doi:10.1103/PhysRevApplied.13.011002

Plasmonic Gas Sensing with Graphene Nanoribbons

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

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

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 language	English (US)
Article number	011002
Journal	Physical Review Applied
Volume	13
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevApplied.13.011002
State	Published - Jan 22 2020

Bibliographical note

Funding Information:
Acknowledgments. This research is supported by grants from the U.S. National Science Foundation (ECCS 1809723 to T.L. and S.-H.O. and ECCS 1809240 to S.-H.O.). S.-H.O. also acknowledges support from Seagate through the MINT consortium at the University of Minnesota.

Publisher Copyright:
© 2020 American Physical Society.

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AU - Oh, Sang Hyun

AU - Avouris, Phaedon

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Plasmonic Gas Sensing with Graphene Nanoribbons

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