Plasmonic-based gas sensing with graphene nanoribbons
arXiv:1910.01231 · doi:10.1103/PhysRevApplied.13.011002
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.
References in corpus (6)
- Detection of Individual Gas Molecules Absorbed on Graphene
- Mid-Infrared Plasmonic Biosensing with Graphene
- Mid-infrared plasmons in scaled graphene nanostructures
- Far-field nanoscale infrared spectroscopy of vibrational fingerprints of molecules with graphene plasmons
- Enhanced optical activity in hyperbolic metasurfaces
- Modeling the Excitation of Graphene Plasmons in Periodic Grids of Graphene Ribbons: An Analytical Approach