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5 March 2021 Plasmonic mid-IR gas sensing using graphene and related materials
Bruno Paulillo, Nestor Jr. Bareza, Irene Dolado, Marta Autore, Kavitha K. Gopalan, Rose Alani, Rainer Hillenbrand, Valerio Pruneri
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Proceedings Volume 11690, Smart Photonic and Optoelectronic Integrated Circuits XXIII; 116900A (2021) https://doi.org/10.1117/12.2577468
Event: SPIE OPTO, 2021, Online Only
Abstract
In the talk, we will present our recent work on mid-IR gas sensing using highly confined surface modes in graphene and hBN nanoresonators. We have used ultrathin functional coatings to selectively concentrate the target gas molecules in proximity of the 2D nanostructures, just like recognition elements are used in biosensors. As a proof of concept we have demonstrated CO2 sensing using graphene nanoribbons coated with a 10nm polyethylenimine chemisorber. We will discuss the different sensing mechanisms that can be leveraged (e.g. plasmon tuning via polymer-induced chemical doping) and the possibility to extend this platform to other 2D materials like hBN.
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Bruno Paulillo, Nestor Jr. Bareza, Irene Dolado, Marta Autore, Kavitha K. Gopalan, Rose Alani, Rainer Hillenbrand, and Valerio Pruneri "Plasmonic mid-IR gas sensing using graphene and related materials", Proc. SPIE 11690, Smart Photonic and Optoelectronic Integrated Circuits XXIII, 116900A (5 March 2021); https://doi.org/10.1117/12.2577468
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KEYWORDS
Graphene
Mid-IR
Plasmonics
Carbon dioxide
Nanostructures
Adsorption
Atmospheric optics
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