20.500.12556/RUL-173982 High-resolution characterisation of the surface moisture sensor Accurate characterisation of the surface moisture content at sub-millimetre scales is crucial in various industries, particularly in the safety-critical production of electric motors for the automotive industry, in packaging and in electronics manufacturing. Apart from moisture resolution, existing sensors often lack the necessary spatial resolution, making precise control of adhesion quality difficult. To solve this problem, we present a novel experimental setup that generates controlled micrometre-scale moisture gradients in thin polymer samples, enabling high-resolution calibration of surface-sensitive moisture sensors. Since direct measurement of the moisture profile at this scale is difficult, we validated the generated moisture gradients using computational fluid dynamics simulations and confirmed their linearity and stability. We then used this setup to determine the effective detection depth of a previously developed surface moisture sensor based on diffuse reflectance infrared Fourier transform spectroscopy. Our results show that using this experimental setup alone improves the spatial resolution of the sensor by a factor of 14 – from about 0.7 mm to effectively 48 µm. This approach fills a critical gap by providing a practical means of calibrating and characterising moisture sensors that respond to surface moisture gradients, significantly improving quality control in high-precision manufacturing processes. surface moisture moisture profiles moisture sensor detection depth surface moisture sensor calibration hygrometry CFD površinska vlaga vlažnostni profili detekcijska globina senzorja vlage umerjanje senzorja površinske vlage higrometrija CFD true false true Angleški jezik Slovenski jezik Članek v reviji 2025-09-25 13:54:12 2025-09-25 13:54:21 2026-09-14 13:37:44 0000-00-00 00:00:00 2026 0 0 11 str. pt. 1, art. 138792 Vol. 447 15. jan. 2026 0000-00-00 Zaloznikova Objavljeno apc 0000-00-00 0000-00-00 0000-00-00 621.317 0925-4005 10.1016/j.snb.2025.138792 250377475 1-s2.0-S0925400525015680-main.pdf 1-s2.0-S0925400525015680-main.pdf 1 BEB78638FB6BB6CC65E13F440542660A ee25e380d5fb55d481cc5a1d6a02e72a11afc6ae24be45d692c73354a25b2559 2aa53215-9d04-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=218926 https://www.sciencedirect.com/science/article/pii/S0925400525015680 0 2f916a56-9a06-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=218706 Fakulteta za elektrotehniko 0 0 0