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Open AccessArticle

Carbon Dioxide Gas Sensor Based on Polyhexamethylene Biguanide Polymer Deposited on Silicon Nano-Cylinders Metasurface

1
Samara National Research University, 443086 Samara, Russia
2
Institute of RAS-Branch of the FSRC Crystallography and Photonics RAS, 443086 Samara, Russia
3
Institute of Microelectronics and Optoelectronics, Warsaw University of Technology, 00-662 Warsaw, Poland
*
Author to whom correspondence should be addressed.
Sensors 2021, 21(2), 378; https://doi.org/10.3390/s21020378
Received: 16 December 2020 / Revised: 4 January 2021 / Accepted: 5 January 2021 / Published: 7 January 2021
(This article belongs to the Special Issue Recent Developments of Integrated Photonic Sensors)
In this paper, we have numerically investigated a metasurface based perfect absorber design, established on the impedance matching phenomena. The paper comprises of two parts. In the first part, the device performance of the perfect absorber—which is composed of silicon nano-cylindrical meta-atoms, periodically arranged on a thin gold layer—is studied. The device design is unique and works for both x-oriented and y-oriented polarized light, in addition to being independent of the angle of incidence. In the second part of the paper, a CO2 gas sensing application is explored by depositing a thin layer of functional host material—a polyhexamethylene biguanide polymer—on the metasurface. The refractive index of the host material decreases due to the absorption of the CO2 gas. As a result, the resonance wavelength of the perfect absorber performs a prominent blueshift. With the help of the proposed sensor design, based on metasurface, the CO2 gas concentration range of 0–524 ppm was detected. A maximum sensitivity of 17.3 pm/ppm was acquired for a gas concentration of 434 ppm. The study presented in this work explores the opportunity of utilizing the metasurface perfect absorber for gas sensing applications by employing functional host materials. View Full-Text
Keywords: metasurface; carbon dioxide gas; sensor; functional host material; polyhexamethylene biguanide; perfect absorber metasurface; carbon dioxide gas; sensor; functional host material; polyhexamethylene biguanide; perfect absorber
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MDPI and ACS Style

Kazanskiy, N.L.; Butt, M.A.; Khonina, S.N. Carbon Dioxide Gas Sensor Based on Polyhexamethylene Biguanide Polymer Deposited on Silicon Nano-Cylinders Metasurface. Sensors 2021, 21, 378. https://doi.org/10.3390/s21020378

AMA Style

Kazanskiy NL, Butt MA, Khonina SN. Carbon Dioxide Gas Sensor Based on Polyhexamethylene Biguanide Polymer Deposited on Silicon Nano-Cylinders Metasurface. Sensors. 2021; 21(2):378. https://doi.org/10.3390/s21020378

Chicago/Turabian Style

Kazanskiy, Nikolay L.; Butt, Muhammad A.; Khonina, Svetlana N. 2021. "Carbon Dioxide Gas Sensor Based on Polyhexamethylene Biguanide Polymer Deposited on Silicon Nano-Cylinders Metasurface" Sensors 21, no. 2: 378. https://doi.org/10.3390/s21020378

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