Conductive Microbead Detection by Helmholtz Coil Technique With SV-GMR Sensor

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Third IEEE International Workshop on Electronic Design, Test and Applications (DELTA'06)

Kuala Lumpur, Malaysia

January 17-January 19

ISBN: 0-7695-2500-8

	ASCII Text	x
	T. Somsak, K. Chomsuwan, S. Yamada, M. Iwahara, S.C. Mukhopadhyay, "Conductive Microbead Detection by Helmholtz Coil Technique With SV-GMR Sensor," Electronic Design, Test and Applications, IEEE International Workshop on, pp. 157-162, Third IEEE International Workshop on Electronic Design, Test and Applications (DELTA'06), 2006.

	BibTex	x
	@article{ 10.1109/DELTA.2006.25, author = {T. Somsak and K. Chomsuwan and S. Yamada and M. Iwahara and S.C. Mukhopadhyay}, title = {Conductive Microbead Detection by Helmholtz Coil Technique With SV-GMR Sensor}, journal ={Electronic Design, Test and Applications, IEEE International Workshop on}, volume = {0}, year = {2006}, isbn = {0-7695-2500-8}, pages = {157-162}, doi = {http://doi.ieeecomputersociety.org/10.1109/DELTA.2006.25}, publisher = {IEEE Computer Society}, address = {Los Alamitos, CA, USA}, }

	RefWorks Procite/RefMan/Endnote	x
	TY - CONF JO - Electronic Design, Test and Applications, IEEE International Workshop on TI - Conductive Microbead Detection by Helmholtz Coil Technique With SV-GMR Sensor SN - 0-7695-2500-8 SP157 EP162 A1 - T. Somsak, A1 - K. Chomsuwan, A1 - S. Yamada, A1 - M. Iwahara, A1 - S.C. Mukhopadhyay, PY - 2006 KW - conductive microbead KW - eddy-current testing KW - spin-valve giant magnetoresistance KW - Helmholtz coil. VL - 0 JA - Electronic Design, Test and Applications, IEEE International Workshop on ER -

T. Somsak, Kanazawa University, Japan

K. Chomsuwan, Kanazawa University, Japan

S. Yamada, Kanazawa University, Japan

M. Iwahara, Kanazawa University, Japan

S.C. Mukhopadhyay, Massey University, Palmertston North, New zealand

DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/DELTA.2006.25

We present an eddy-current test (ECT) method for detecting conductive microbeads on a non-conductive substrate. A Helmholtz coil is used to generate an exciting magnetic field. The magnetic fields, generated by eddycurrents in a Pb-Sn microbead, are detected by a spinvalve giant magnetoresistive (SV-GMR) sensor. The experimental results are compared to an analytical solution for the magnetic field over the microbead. Early results for the detection of a grid of microbeads are also presented.

Index Terms:

conductive microbead, eddy-current testing, spin-valve giant magnetoresistance, Helmholtz coil.

Citation:

T. Somsak, K. Chomsuwan, S. Yamada, M. Iwahara, S.C. Mukhopadhyay, "Conductive Microbead Detection by Helmholtz Coil Technique With SV-GMR Sensor," delta, pp.157-162, Third IEEE International Workshop on Electronic Design, Test and Applications (DELTA'06), 2006

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