Iron detection method based on high-resolution magnetic field camera

Iron detection plays a crucial role across various scientific and industrial fields due to its significant impact on health, safety, or product quality. Despite its importance, iron detection raises several challenges, including the need for highly sensitive and accurate measurement techniques. In this paper, we propose a novel iron detection method based on a custom magnetic field camera (MFC) specifically designed for high-resolution and synchronous measurements. The MFC includes an array of 8 x 8 monolithic integrated magnetic sensors with a resolution of 42 nT, enabling the detection of iron, for instance, in food samples or iron particles, in both static and dynamic conditions. Operating at a sampling rate of 110 Hz, this MFC paves the way for new metrological opportunities.