Fabrication of a surface type humidity sensor based on methyl green thin film, with the analysis of capacitance and resistance through neutrosophic statistics

Usama Afzal; Naveed Ahmad; Qayyum Zafar; Muhammad Aslam

doi:10.1039/d1ra07087h

Fabrication of a surface type humidity sensor based on methyl green thin film, with the analysis of capacitance and resistance through neutrosophic statistics

RSC Adv. 2021 Dec 2;11(61):38674-38682. doi: 10.1039/d1ra07087h. eCollection 2021 Nov 29.

Authors

Usama Afzal¹, Naveed Ahmad¹, Qayyum Zafar², Muhammad Aslam³

Affiliations

¹ Department of Physics, University of Education Township Campus Lahore 54000 Pakistan mohammadusamafzal7@gmail.com.
² Department of Physics, University of Management and Technology Lahore 54000 Pakistan qayyumzafar@gmail.com.
³ Department of Statistics, Facility of Science, King Abdulaziz University Jeddah 21551 Saudi Arabia aslam_ravian@hotmail.com.

Abstract

In this work, we propose a humidity sensor based on methyl green thin film. A surface-type humidity sensor Al/MG/Al was fabricated by depositing methyl green thin film between aluminum electrodes. The structural, optical and surface morphological properties of the thin film were characterized by XRD, UV Vis and FESEM. The sensing properties with high sensitivity as well as response time 200 s and recovery 60 s of the humidity sensor were investigated by measuring the capacitance and resistance at 1, 10 and 100 kHz with the humidity varying range from 32 to 85% RH. These measured values were analyzed by classical statistics and neutrosophic statistics. As a result, it was observed that neutrosophic statistics were more informative, flexible and adequate than classical statistics for analyzing the measured values of capacitance and resistance.