Tanaka, Saburo and Hatsukade, Yoshimi and Aspanut, Zarina and Matsuda, Takemasa and Hotta, Naoki and Uchida, M. and Natsume, Miyuki (2004) Measurement of metallic contaminants in food with a high-Tc SQUID. Superconductor Science and Technology, 17 (4). p. 620. ISSN 0953-2048,
Full text not available from this repository.Abstract
We have proposed and demonstrated a high-Tc SQUID system for detecting metallic contaminants in foodstuffs. There is a demand for the development of systems for detecting not only magnetic materials but also non-magnetic materials such as Cu and aluminium in foodstuffs to ensure food safety. The system consists of a SQUID magnetometer, an excitation coil and a permanent magnet. For a non-magnetic sample, an AC magnetic field is applied during detection to induce an eddy current in the sample. For a magnetizable sample, a strong magnetic field is applied to the sample prior to the detection attempt. We were able to detect a stainless steel ball with a diameter of 0.1 mm and a Cu ball less than 1 mm in diameter, for example.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Additional Information: | Department of Physics, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA |
| Uncontrolled Keywords: | high-Tc SQUID system; metallic contaminants; food safety; SQUID magnetometer |
| Subjects: | Q Science > QC Physics |
| Divisions: | Faculty of Science > Department of Physics |
| Depositing User: | Miss Malisa Diana |
| Date Deposited: | 17 Jul 2013 06:22 |
| Last Modified: | 12 Dec 2014 06:16 |
| URI: | http://eprints.um.edu.my/id/eprint/7465 |
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