Work

Optimization of tapered microfiber humidity sensors with molybdenum disulfide coating

Year: 2025

Type: article

Abstract: This study focuses on developing and optimizing a new optical sensor using tapered microfiber (TMF) for humidity sensing in the 30-80% Relative Humidity (%RH) range. The TMF was fabricated with varying heating lengths (3-6 mm) and waist diameters (3-7 µm), and its performance was tested using a tunable light source and an optical power meter. Results showed that a 5 mm TMF with a 3 µm waist diameter provided the best stability and sensitivity for humidity sensing. Additionally, coating the TMF with Molybdenum Disulfide (MoS2) nanoflakes improved sensitivity by 20-50%, with an error margin of less than 5%. The optimized sensor achieved a sensitivity of -0.244 dB/% and over 97% linearity, demonstrating its potential for precise humidity detection in environmental applications.

Source: International Journal of Nanoelectronics and Materials (IJNeaM)

DOI: 10.58915/ijneam.v18i2.2121

Authors: Norhafizah Burham, Norazida Ali, Muhamad Afiq Aiman Mazlan, Muhamad Razin Aiman Rizal, Aziati Husna Awang, Norhana Arsad

Institutions: Universiti Teknologi MARA System, Universiti Teknologi MARA, Politeknik Mersing Johor, National University of Malaysia

Language: English

Topic: Advanced Fiber Optic Sensors

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

Funder: Universiti Teknologi MARA

Award: G4976065483