Development of high-resolution magnetic field imaging system and application to interface science

2014 Fiscal Year Final Research Report

• Project/Area Number: 25870428
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Physical chemistry; Measurement engineering
• Research Institution: Kobe University
• Principal Investigator: KIMURA Kenjiro 神戸大学, 理学(系)研究科(研究院), 准教授 (10437246)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 計測 / 物理化学 / 非破壊検査

Outline of Final Research Achievements

In this study, we have developed a high-resolution subsurface magnetic field imaging system capable of visualizing electric current distribution in a distance from the measurement area. This system equips a tunneling magnetoresistance device as a magnetic field sensor and a scanning device with nanometer-scale precision. Additionally, This system have a imaging software based on integral geometry electromagnetic field reconstruction theory capable of achieving a spatial resolution equal to minimum size of a magnetic field sensor for a higher-spatial resolution image. We have succeeded in imaging electric current distributions at metal-metal junction interface, LED chips, rechargeable batteries and so on using this system.

Free Research Field

計測