Development of low-invasive/non-destructive measurements by using needle-type magnetic resistance probe with micro driving mechanism

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The work presents inimitable shaped needle type probe with spin-valve giant magnetoresistance(SV-GMR) elements and also develops the micro-drive mechanism by using magnetostrictive device. The device has the low-invasive magnetic measurement, then that gives opportunity to apply the probe in biological (in vivo) experiments, and in non-destructive evaluation. We have the achievements as follows(1) Improvement of sensing characteristics and micro structure of the probe.(2) Micro-linear driving mechanism for needle type probe and its characteristics(3) Low-invasive measuring system in bio-fields and non-destructive testing in electronics field(a) Hyperthermia therapy and immunoassay experiments(b) eddy-current inspection in narrow space(c) current sensor for printed circuit board.