Work

A Novel Molybdenum Disulfide-Based High-Precision Microwave Sensor for Methanol Gas Detection at Room Temperature

Year: 2024

Type: article

Abstract: This letter reports, for the first time, a molybdenum-disulfide (MoS$_2$)-coated microwave gas sensor for methanol gas detection. A wideband monopole antenna, resonating at 2.45 GHz for wireless applications, is fit with a 15-mm-long copper-based grating sensing element for high-precision gas sensing. When the sensor surface is coated with a highly sensitive layer of hydrothermally grown MoS$_2$and exposed to methanol gas, the electrical properties of the sensing material change. The developed sensor confirms the detection of methanol gas in parts per thousand (ppt) range from 5.3 to 42.6 ppt with a sensitivity of$\sim$1.0 MHz/5 ppt. Furthermore, the gas-sensing functionality of the sensor does not affect the communication performances of the antenna, suggesting seamless integration into wireless sensor networks (WSNs). The simulation results, experimental data, and sensing mechanisms are provided to support the claims.

Source: IEEE Microwave and Wireless Technology Letters

DOI: 10.1109/lmwt.2024.3382605

Authors: Mohammad Mahmudul Hasan, Onur Alev, Eda Goldenberg, Michael Cheffena

Institutions: Norwegian University of Science and Technology, Gebze Technical University

Language: English

Topic: Gas Sensing Nanomaterials and Sensors

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funder: Norges Forskningsråd

Award: G2923691290