Plasmonic-based gas sensing with graphene nanoribbons
Mesoscale and Nanoscale Physics
2020-01-29 v1
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 found gas adsorption in a typical nanoribbon array plasmonic setup produces measurable dips in optical extinction of magnitude 0.1 % for gas concentration of about parts per thousand level.
Cite
@article{arxiv.1910.01231,
title = {Plasmonic-based gas sensing with graphene nanoribbons},
author = {Kaveh Khaliji and Sudipta Romen Biswas and Hai Hu and Xiaoxia Yang and Qing Dai and Sang-Hyun Oh and Phaedon Avouris and Tony Low},
journal= {arXiv preprint arXiv:1910.01231},
year = {2020}
}