Tohoku University Technology: Magnetic DC/AC susceptibility measurement device: T22-278
Able to measure AC susceptibility of thin film and nanoparticle Able to measure simultaneously DC & AC susceptibility
In conventional magnetic AC susceptibility measurement to measure magnetic material property, the susceptibility is detected by AC frequency. This disable to measure small amount of sample such as thin film and nanoparticle at low frequency (< 1 kHz) due to crowding of unbalanced voltage and detected voltage. Therefore, it is not possible to apply it to biomagnetic sensing. DC / AC susceptibility is measured by different methods, and although measuring equipment with both measurement modes exists, simultaneous measurement is not possible. This invention combines magnetic AC susceptibility measurement and new analysis method based on Vibrating Sample Magnetometry (VSM), a method to measure DC susceptibility. This enables AC susceptibility detection in sideband frequency, improving detection sensitivity and enabling AC susceptibility measurement of small amount of sample that could not be measured so far. Moreover, simultaneous measurement of DC and AC susceptibility is also possible. Another major advantage is that it could be simply producedd by combining analysis method with conventional measurement equipment.
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The revenue generated from technology transfer is reinvested as new research funding for universities and researchers, and is utilized to create further research outcomes. To ensure the smooth operation of this cycle, known as the "Intellectual Creation Cycle," we will vigorously promote technology transfer. The types of seeds we handle include patents, know-how, databases, and programs. We have established a collaborative framework by signing basic technology transfer agreements with the following universities (as of June 1, 2025): Tohoku University, Hirosaki University, Iwate University, Akita University, Fukushima University, Yamagata University, Tohoku Gakuin University, Iwate Medical University, Fukushima Medical University, Aizu University, Miyagi University, Hokkaido University, Muroran Institute of Technology, and Showa Medical University.
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