Diode/magnetic tunnel junction cell for fully scalable matrix-based biochip

被引：17

作者：

Cardoso, F. A.

Ferreira, H. A.

Conde, J. P.

Chu, V.

Freitas, P. P.

Vidal, D.

Germano, J.

Sousa, L.

Piedade, M. S.

Costa, B. A.

Lemos, J. M.

机构：

[1] INESC Microsyst & Nanotechnol, P-1000029 Lisbon, Portugal

[2] Univ Tecn Lisboa, Inst Super Tecn, P-1000029 Lisbon, Portugal

[3] INESC Invest & Desenvolvimento, P-1000029 Lisbon, Portugal

来源：

JOURNAL OF APPLIED PHYSICS | 2006年 / 99卷 / 08期

关键词：

D O I：

10.1063/1.2165148

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Magnetoresistive biochips have been recently introduced for the detection of biomolecular recognition. In this work, the detection site incorporates a thin-film diode in series with a magnetic tunnel junction (MTJ), leading to a matrix-based biochip that can be easily scaled up to screen large numbers of different target analytes. The fabricated 16x16 cell matrix integrates hydrogenated amorphous silicon (a-Si:H) diodes with aluminum oxide barrier MTJ. Each detection site also includes a U-shaped current line for magnetically assisted target concentration at probe sites. The biochip is being integrated in a portable, credit card size electronics control platform. Detection of 250 nm diameter magnetic nanoparticles by one of the matrix cells is demonstrated. (C) 2006 American Institute of Physics.

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页数：3

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