CO2 detection using microwave metasurface-based antennas covered with carbon nanotubes

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B Pub Date : 2025-04-03 DOI:10.1016/j.mseb.2025.118282

Alina Cismaru, Mircea Dragoman, Sergiu Iordănescu, Cosmin Obreja, Valentin Buiculescu, Hamza El Ghannudi, Cătălin Pârvulescu, Damir Mladenovic, Mihaela Carp, Oana Brâncoveanu

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Abstract

In this paper a novel CO₂ sensor based on two types of metasurface-based antennas coated with single wall carbon nanotubes (SWCNTs), and functionalized with carbon nitride nanosheets (g-C₃N₄) as a gas adsorber is presented. The antenna A1 with complementary split-ring resonators (CSRRs) integrated into the patch and covered with CNTs works at 16.06 GHz (A1 CNT) and the antenna A2 with CSRRs incorporated into the ground plane covered with CNTs works at 17.06 GHz. The experimental results demonstrate a shift in frequency with almost 5 MHz for A1 CNT and with almost 15 MHz for A2 CNT at the concentration level of 1800 ppm. The interaction between CO₂ and the CNTs covering the metasurface-based antennas produced a good sensitivity, of 2.7 kHz/ppm for A1 CNT and 8.3 kHz/ppm for A2 CNT at the concentration level of 1800 ppm.

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来源期刊

Materials Science and Engineering: B 工程技术-材料科学：综合

CiteScore

5.60

自引率

2.80%

发文量

481

审稿时长

3.5 months

期刊介绍： The journal provides an international medium for the publication of theoretical and experimental studies and reviews related to the electronic, electrochemical, ionic, magnetic, optical, and biosensing properties of solid state materials in bulk, thin film and particulate forms. Papers dealing with synthesis, processing, characterization, structure, physical properties and computational aspects of nano-crystalline, crystalline, amorphous and glassy forms of ceramics, semiconductors, layered insertion compounds, low-dimensional compounds and systems, fast-ion conductors, polymers and dielectrics are viewed as suitable for publication. Articles focused on nano-structured aspects of these advanced solid-state materials will also be considered suitable.