電磁誘導を用いた個体識別法

抄録

For this study, we propose a novel sensing system for biometric identification within short time under wet environment. For that purpose, we produced a micro magnetic tag for two - dimensional observation of the temperature difference pattern when a low cost magnetic material generates heat. We carried out performance comparison of Litz wire coil compared with choke coil. As a result, it was found that the Litz wire coil is more suitable for application of the high frequency magnetic field in terms of the peak frequency of the Q-factor. As a high-throughput sensing by 2D data, a thermography was employed. Generally small target material make an amount of eddy current smaller and do not lead to enough heat generation, but it is suggested that that problem could be improved by using Fe3O4 nanoparticles. This research contributes to environmental technology and sensing / tracing technology.