Nano Archive

Design and fabrication of non-superparamagnetic high moment magnetic nanoparticles for bioapplications

Punnakitikashem Punnapoband Chang, Shih-Hsin and Huang, Chien-Wen and Liu, J. and Hao, Yaowu (2010) Design and fabrication of non-superparamagnetic high moment magnetic nanoparticles for bioapplications. Journal of Nanoparticle Research, 12 (4). pp. 1101-1106.

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Official URL: http://dx.doi.org/10.1007/s11051-009-9761-4

Abstract

We present a new type of magnetic nanoparticles for bioapplications. Multilayered nanodisks consisting of two magnetic layers separated by a non-magnetic layer with two capping layers were designed and fabricated. Two key magnetic requirements for bioapplications, a high saturation magnetic moment and a near-zero remanence, were achieved through the magnetostatic interlayer coupling between two magnetic layers. Capping layers provide functionalization sites for biomolecule attachment. A pillar-template-based synthesis method was employed for fabrication. Nanodisks with a diameter of 70 nm and a thickness of 60 nm were produced in large quantity. The magnetic characterization shows that each nanodisk possesses a magnetic moment equivalent to 100 10-nm Co nanoparticles and a near-zero remanent moment.

Item Type:Article
ID Code:9141
Deposited By:Prof. Alexey Ivanov
Deposited On:13 May 2010 12:53
Last Modified:13 May 2010 13:19

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