Development of contaminant detection system based on ultra-low field SQUID-NMR/MRI

11th European Conference on Applied Superconductivity

Tsunaki, S.^1 ; Yamamoto, M.^1 ; Hatta, J.^1 ; Hatsukade, Y.^1 ; Tanaka, S.^1

Toyohashi University of Technology, 1-1 Hibarigaoka, Tenpaku-cho, Aichi, Toyohashi

441-8580, Japan^1

关键词: Contaminant detection;    Food samples;    Glass balls;    Hole position;    Rf SQUID;    Ultra-low field;    Water samples;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/507/4/042044/pdf
DOI  :  10.1088/1742-6596/507/4/042044

来源: IOP

【 摘 要 】

We have developed an ultra-low field (ULF) NMR/MRI system using an HTS-rf-SQUID and evaluated performance of the system as a contaminant detection system for foods and drinks. In this work, we measured 1D MRIs from water samples with or without various contaminants, such as aluminum and glass balls using the system. In the 1D MRIs, changes of the MRI spectra were detected, corresponding to positions of the contaminants. We measured 2D MRIs from food samples with and without a hole. In the 2D MRIs, the hole position in the sample was well visualized. These results show that the feasibility of the system to detect and localize contaminants in foods and drinks.