From Magnetic Nanoparticles to Magnetoresistive Biosensors

Ennen I, Albon C, Weddemann A, Auge A, Hedwig P, Wittbracht F, Regtmeier A-K, Akemeier D, Dreyer A, Peter M, Jutzi P, et al. (2012)
ACTA PHYSICA POLONICA A 121(2): 420-425.

Journal Article | Published | English

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Abstract
This paper highlights recent advances in synthesis and magnetotransport properties of magnetic Co nanopartides. It is shown that magnetic Co nanoparticles self-assembled in nanoparticular monolayers revealing giant magnetoresistance similar to granular systems but with additional features resulting from dipolar interactions between small domains of nanoparticles. A spin-valve with one magnetic Co nanoparticular electrode is employed as a model to demonstrate that individual magnetic moments of Co nanoparticles can be coupled to a magnetic Co layer which in turn offers tailoring of the resulting giant magnetoresistance characteristics. In addition, it is demonstrated that combining a magnetic on-off ratchet with magnetic tunneling junctions integrated in the ratchet introduces a new biosensor concept enabling: (1) simultaneous transporting and separating biomolecules, (2) dynamical biomolecule detection when passing magnetic tunneling junctions in a 1D arrangement. It is projected that this biosensor concept could be applied for viruses as well as for bacteria.
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Ennen I, Albon C, Weddemann A, et al. From Magnetic Nanoparticles to Magnetoresistive Biosensors. ACTA PHYSICA POLONICA A. 2012;121(2):420-425.
Ennen, I., Albon, C., Weddemann, A., Auge, A., Hedwig, P., Wittbracht, F., Regtmeier, A. - K., et al. (2012). From Magnetic Nanoparticles to Magnetoresistive Biosensors. ACTA PHYSICA POLONICA A, 121(2), 420-425.
Ennen, I., Albon, C., Weddemann, A., Auge, A., Hedwig, P., Wittbracht, F., Regtmeier, A. - K., Akemeier, D., Dreyer, A., Peter, M., et al. (2012). From Magnetic Nanoparticles to Magnetoresistive Biosensors. ACTA PHYSICA POLONICA A 121, 420-425.
Ennen, I., et al., 2012. From Magnetic Nanoparticles to Magnetoresistive Biosensors. ACTA PHYSICA POLONICA A, 121(2), p 420-425.
I. Ennen, et al., “From Magnetic Nanoparticles to Magnetoresistive Biosensors”, ACTA PHYSICA POLONICA A, vol. 121, 2012, pp. 420-425.
Ennen, I., Albon, C., Weddemann, A., Auge, A., Hedwig, P., Wittbracht, F., Regtmeier, A.-K., Akemeier, D., Dreyer, A., Peter, M., Jutzi, P., Mattay, J., Mitzel, N.W., Mill, N., Hütten, A.: From Magnetic Nanoparticles to Magnetoresistive Biosensors. ACTA PHYSICA POLONICA A. 121, 420-425 (2012).
Ennen, I., Albon, Camelia, Weddemann, A., Auge, Alexander, Hedwig, Peter, Wittbracht, Frank, Regtmeier, Anna-Kristina, Akemeier, Dieter, Dreyer, Axel, Peter, Michael, Jutzi, Peter, Mattay, Jochen, Mitzel, Norbert W., Mill, Nadine, and Hütten, Andreas. “From Magnetic Nanoparticles to Magnetoresistive Biosensors”. ACTA PHYSICA POLONICA A 121.2 (2012): 420-425.
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