High-Spatial-Resolution Magnetic-Field Measurement by Giant Magnetoresistance Sensor – Applications to Nondestructive Evaluation and Biomedical Engineering

Sotoshi Yamada

doi:10.21307/ijssis-2017-284

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High-Spatial-Resolution Magnetic-Field Measurement by Giant Magnetoresistance Sensor – Applications to Nondestructive Evaluation and Biomedical Engineering

International Journal on Smart Sensing and Intelligent Systems

Volume 1 (2008): Issue 1 (January 2008)

By: Sotoshi Yamada

Open Access

|Dec 2017

Abstract

Giant magnetoresistance (GMR) sensor has been developed and widely applied to use as magnetic read head in data storage industry. This paper describes new applications of magnetic-field measurement with high spatial-resolution and high sensitivity to nondestructive evaluation and biomedical engineering. For nondestructive evaluation, the GMR sensor, used as magnetic sensor based on eddy-current testing technique, was applied to the detection of micro-crack on micro-conductor for the purpose of printed circuit board inspection and the detection of micro-solder-ball grid array. For biomedical engineering, the weight density of magnetic fluid for cancer treatment was measured by the GMR sensor. In addition, the GMR sensor was applied to measure micro-current and these can lead to the direct detection of nervous action.

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Articles in this issue

DOI: https://doi.org/10.21307/ijssis-2017-284 | Journal eISSN: 1178-5608

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Language: English

Page range: 160 - 175

Published online: Dec 13, 2017

Published in print: Jan 1, 2008

Published by: International Journal on Smart Sensing and Intelligent Systems

In partnership with: Paradigm Publishing Services

Publication frequency: Volume open

Keywords:

giant magnetoresistance,

nondestructive evaluation,

eddy-current testing,

printed circuit board,

conductive microbead,

nerve,

Related subjects:

Introductions and overviews,

Engineering, other

© 2017 Sotoshi Yamada, published by International Journal on Smart Sensing and Intelligent Systems
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Volume 1 (2008): Issue 1 (January 2008)