<abstract xmlns="http://www.w3.org/1999/xhtml"><p>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.</p></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.

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

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Giant magnetoresistance (GMR) sensor has been developed and widely applied to use as magnetic read head in data storage industry. This paper describes new...

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

Published Online: Dec 13, 2017

Page range: 160 - 175

DOI: https://doi.org/10.21307/ijssis-2017-284

Keywords
giant magnetoresistance, nondestructive evaluation, eddy-current testing, printed circuit board, conductive microbead, low-invasion, hyperthermia, magnetic fluid, weight density, nerve, action current

© 2008 Sotoshi Yamada et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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

Published Online: Dec 13, 2017

Page range: 160 - 175

DOI: https://doi.org/10.21307/ijssis-2017-284

Keywordsgiant magnetoresistance, nondestructive evaluation, eddy-current testing, printed circuit board, conductive microbead, low-invasion, hyperthermia, magnetic fluid, weight density, nerve, action current

© 2008 Sotoshi Yamada et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
giant magnetoresistance, nondestructive evaluation, eddy-current testing, printed circuit board, conductive microbead, low-invasion, hyperthermia, magnetic fluid, weight density, nerve, action current