Phonon-Enhanced Mid-Infrared CO2 Gas Sensing Using Boron Nitride Nanoresonators

Bareza, Nestor Jr. ; Paulillo, Bruno ; Slipchenko, Tetiana M. ; Autore, Marta ; Dolado, Irene ; Song, Liu ; Edgar, James H. ; Vélez, Saúl ; Martín-Moreno, Luis ; Hillenbrand, Rainer ; Pruneri, Valerio

Resumen: Hexagonal boron nitride (hBN) hosts long-lived phonon polaritons, yielding a strong mid-infrared (mid-IR) electric field enhancement and concentration on the nanometer scale. It is thus a promising material for highly sensitive mid-IR sensing and spectroscopy. In addition, hBN possesses high chemical and thermal stability as well as mechanical durability, making it suitable for operation in demanding environments. In this work, we demonstrate a mid-IR CO2 gas sensor exploiting phonon polariton (PhP) modes in hBN nanoresonators functionalized by a thin CO2-adsorbing polyethylenimine (PEI) layer. We find that the PhP resonance shifts to lower frequency, weakens, and broadens for increasing CO2 concentrations, which are related to the change of the permittivity of PEI upon CO2 adsorption. Moreover, the PhP resonance exhibits a high signal-to-noise ratio even for small ribbon arrays of 30 × 30 µm2. Our results show the potential of hBN nanoresonators to become a novel platform for miniaturized phonon-enhanced SEIRA gas sensors. © 2022 The Authors. Published by American Chemical Society

Idioma: Inglés

DOI: 10.1021/acsphotonics.1c01254

Año: 2022

Publicado en: ACS photonics 9, 1 (2022), 34-42
ISSN: 2330-4022

Factor impacto JCR: 7.0 (2022)

Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 78 / 343 = 0.227 (2022) - Q1 - T1
Categ. JCR: OPTICS rank: 13 / 99 = 0.131 (2022) - Q1 - T1
Categ. JCR: PHYSICS, APPLIED rank: 25 / 160 = 0.156 (2022) - Q1 - T1
Categ. JCR: PHYSICS, CONDENSED MATTER rank: 14 / 67 = 0.209 (2022) - Q1 - T1
Categ. JCR: NANOSCIENCE & NANOTECHNOLOGY rank: 36 / 107 = 0.336 (2022) - Q2 - T2

Factor impacto CITESCORE: 12.7 - Engineering (Q1) - Biochemistry, Genetics and Molecular Biology (Q1) - Physics and Astronomy (Q1) - Materials Science (Q1)

Factor impacto SCIMAGO: 2.113 - Atomic and Molecular Physics, and Optics (Q1) - Electronic, Optical and Magnetic Materials (Q1) - Electrical and Electronic Engineering (Q1) - Biotechnology (Q1)

Financiación: info:eu-repo/grantAgreement/EC/H2020/665884/EU/ICFOstepstone PhD Programme for Early-Stage Researchers in Photonics/ICFOstepstone
Financiación: info:eu-repo/grantAgreement/EC/H2020/754510/EU/PROBIST Cofund bist postdoctoral fellowship programme/PROBIST
Financiación: info:eu-repo/grantAgreement/EC/H2020/881603/EU/Graphene Flagship Core Project 3/GrapheneCore3
Financiación: info:eu-repo/grantAgreement/ES/MICINN-AEI/PID2019-106892RB-I00
Financiación: info:eu-repo/grantAgreement/ES/MICINN-AEI/PID2020-115221GB-C41
Financiación: info:eu-repo/grantAgreement/ES/MINECO/RTI2018-094830-B-100

Tipo y forma: Artículo (Versión definitiva)