Kunchakara, Suhasini and Ratan, Amar and shah, Jyoti and Kotnala, R. K. and Singh, Vaishali (2019) Humidity sensing of Mg doped MCM‑41 on silver sputtered thin films. Journal of Materials Science: Materials in Electronics, 30 (16). 15646-15653. ISSN 0957-4522

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Abstract

The as-synthesized mesoporous silica nanoparticles were doped with varying concentration of xMgCl(2) (x = 0 - 1 g). The samples were coated onto silver sputtered interdigitated films (IDEs) on the glass. The comb-shaped interdigitated electrodes were prepared by R.F sputtering at 7.2 x 10(-2) mbar with power at 60 W. The thickness of the thin film was around similar to 100 nm. The Mg doped MCM-41 samples were coated on to the IDEs to study humidity sensing at ambient room temperature. The obtained samples were characterized using Fourier-transform infrared spectroscopy (FTIR), Small Angle X-Ray Scattering (SAXS), N-2 adsorption-desorption isotherms and High-resolution Transmission Electron Microscopy (HRTEM). The impedance of Mg doped MCM-41 (0.5) sample changed more than four order of magnitude over the relative humidity 11% to 93% RH performed at the ambient temperature 25 degrees C. In the whole series only xMg-MCM-41, where x = 0.5 was the best candidate for sensing humidity. Studies of impedance show that the combination of Mg doped MCM-41 on indigenously prepared interdigitated electrodes are a step towards the manufacturing process of high-performance humidity sensors.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Springer Verlag.
Subjects:	Engineering > Electronics and Electrical Engineering Materials Science Applied Physics/Condensed Matter
Divisions:	UNSPECIFIED
Depositing User:	Mr. Yogesh Joshi
Date Deposited:	19 Aug 2026 11:20
Last Modified:	19 Aug 2026 11:20
URI:	https://npl.csircentral.net/id/eprint/4233

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