Conductive nanofilm/melamine foam hybrid thermoelectric as a thermal insulator generating electricity: theoretical analysis and development

Journal article

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Author list: Thongkham W., Lertsatitthanakorn C., Jitpukdee M., Jiramitmongkon K., Khanchaitit P., Liangruksa M.

Publisher: Elsevier B.V.

Publication year: 2019

Volume number: 54

Issue number: 11

Start page: 8187

End page: 8201

Number of pages: 15

ISSN: 2211-3797

eISSN: 2211-3797

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85078491637&doi=10.1016%2fj.rinp.2020.102957&partnerID=40&md5=e6fd0bf3ade32fc85d989bd575091256

Languages: English-Great Britain (EN-GB)

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Abstract

We theoretically investigated the use of a Si3N4 on SiO2 waveguide as an optical interaction part with sensed molecules for multi-gas wideband on-chip spectroscopic sensing. From the analysis, we show that a simple strip Si3N4 waveguide can be employed to achieve acceptable values of performance in term of detection limit, compactness, polarization, and fabrication tolerance for the detection of water vapor (H2O), carbon dioxide (CO2), Nitrous oxide (N2O), Ammonia (NH3), Ethylene (C2H4), and Methane (CH4) gas molecules, with a wideband operation between 2.7 and 3.4 ตm optical wavelength. The results show that a simple Si3N4 waveguide structure could attain competitive performance required for generic on-chip spectroscopic sensing for environmental and agricultural usage. ฉ 2020 The Authors

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