Effective detection of acetone gas molecules using PLD deposited tungsten oxide microwires for biomedical applications.

ABSTRACT: Skin gas sensors offer a non-invasive route for monitoring biomarkers such as acetone, relevant to metabolic conditions like diabetes. In this study, WO₃ thin films were deposited on LaAlO₃ (100) substrates via pulsed laser deposition and evaluated for acetone sensing. X-ray diffraction analysis confirmed the formation of highly crystalline WO₃ thin films at 600 °C. Atomic force microscopy analysis revealed a uniform film morphology with nanoscale grain structures, emphasizing the role of grain size in enhancing the gas adsorption and diffusion. The amorphous films exhibited an excellent response at 300 °C, detecting concentrations as low as 100 ppb in an air atmosphere. In addition, the fabricated sensor exhibited rapid response (19 s) and recovery

SUBMITTER: Ramaraj SG 

PROVIDER: S-EPMC12441792 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature