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http://tainguyenso.vnu.edu.vn/jspui/handle/123456789/13893
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| Title: | Noise characteristics and particle detection limits in diode+MTJ matrix elements for biochip applications |
| Authors: | Cardoso F.A.
Ferreira R.
Cardoso S.
Concle J.P.
Chu V.
Freitas P.P.
Germano J.
Almeida T.
Sousa L.
Piedade M.S. |
| Keywords: | DNA-chips
Magnetic nanoparticles
Magnetic tunnel junction
Magnetoresistive biochips |
| Issue Date: | 2007 |
| Publisher: | IEEE Transactions on Magnetics |
| Citation: | Volume 43, Issue 6, Page 2403-2405 |
| Abstract: | A fully scalable matrix-based magnetoresistive biochip has been recently introduced for the detection of biomolecular recognition events. This work reports results for a 3 × 3 cells matrix comprising hydrogenated amorphous silicon diodes (PIN and Schottky) and aluminum oxide magnetic tunnel junctions (MTJ). The noise characteristics of the individual thin film diodes (TFD) and the MTJ were analyzed for measuring frequencies from DC to 1 kHz, allowing the detection of single magnetic nanoparticles with 250 nm and 130 nm diameters. For 50 nm particles, and at 1 kHz, minimum number of detectable labels ranges from 20 (Schottky diodes) to 20 (PIN diodes). © 2007 IEEE. |
| URI: | http://tainguyenso.vnu.edu.vn/jspui/handle/123456789/13893 |
| ISSN: | |
| Appears in Collections: | Magnetic Biochips Articles from Scopus
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