An integrated micro-chip for rapid detection of magnetic particles | Zendy

Chinthaka P. Gooneratne | Zendy; Liang Cai | Zendy; Ioanna Giouroudi | Zendy; Jǘrgen Kosel | Zendy

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An integrated micro-chip for rapid detection of magnetic particles

Author(s) -

Chinthaka P. Gooneratne,

Liang Cai,

Ioanna Giouroudi,

Jǘrgen Kosel

Publication year - 2012

Publication title -

journal of applied physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.699

H-Index - 319

eISSN - 1089-7550

pISSN - 0021-8979

DOI - 10.1063/1.3678303

Subject(s) - wheatstone bridge , giant magnetoresistance , materials science , chip , fabrication , optoelectronics , nanotechnology , noise (video) , magnetoresistance , magnetic field , electrical engineering , computer science , physics , engineering , resistor , voltage , medicine , alternative medicine , pathology , quantum mechanics , artificial intelligence , image (mathematics)

This paper proposes an integrated micro-chip for the manipulation and detection of magnetic particles (MPs). A conducting ring structure is used to manipulate MPs toward giant magnetoresistance(GMR) sensing elements for rapid detection. The GMRsensor is fabricated in a horseshoe shape in order to detect the majority of MPs that are trapped around the conducting structure. The GMR sensing elements are connected in a Wheatstone bridge circuit topology for optimum noise suppression. Full fabrication details of the micro-chip, characterization of the GMRsensors, and experimental results with MPs are presented in this paper. Experimental results showed that the micro-chip can detect MPs from low concentration samples after they were guided toward the GMRsensors by applying current to the conducting ring structure

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