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Aspects of nondestructive detections using a magnetoelectric sensor

Do, Thi Huong Giang and Nguyen, Huu Duc (2016) Aspects of nondestructive detections using a magnetoelectric sensor. In: The 8th International Workshop on ADVANCED MATERIALS SCIENCE AND NANOTECHNOLOGY, 8-12 November 2016, Ha Long City, Vietnam. (Unpublished)

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This article deals with the state-of-the-art techniques in the field of nondestructive (and/or distance) detections. Illustrations are described for a wide range of applications from local evaluations of magnetic nanoparticles at a depth of several centimeters in the body during clinical interventions to blood pulse analysis and pipe and cable monitoring. Developments are implemented using a magnetoelectric based magnetic sensor with a long type sandwich Metglas/PZT/Meglas laminate composite of 1×15 mm2 dimension. In the resonant mode, the sensor exhibits a sensitivity better than 200 mV/Oe and a detection limit of 3×10−8 emu. This method can detect a spot with at least 50 µg iron oxide magnetic nanoparticles at a distance of about 10 mm from the skin surface. For the radial pulse analysis, thanks to the disturbance created by blood flowing through a localized magnetic field, not only the information of the heard rate, but also the radial blood flow waveforms are monitored (fig. 1), which strongly supports the traditional Chinese medicine. Moreover, this universal detector type can also be performed for locating wood, metal, copper, iron and live wires in the walls. It is indispensable tools for any contractors in the building who have to drill holes into walls as well as building inspectors who want to making a report on a site. The magnetoelectric sensors, thus, exhibit a high potential of applications.

Item Type: Conference or Workshop Item (Speech)
Subjects: Engineering Physics
Divisions: Faculty of Engineering Physics and Nanotechnology (FEPN)
Depositing User: Dr Giang Do
Date Deposited: 31 Dec 2016 10:14
Last Modified: 31 Dec 2016 10:14

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