- Tytuł:
- From Magnetic Nanoparticles to Magnetoresistive Biosensors
- Autorzy:
-
Ennen, I.
Albon, C.
Weddemann, A.
Auge, A.
Hedwig, P.
Wittbracht, F.
Regtmeier, A.
Akemeier, D.
Dreyer, A.
Peter, M.
Jutzi, P.
Mattay, J.
Mitzel, N.
Mill, N.
Hütten, A. - Powiązania:
- https://bibliotekanauki.pl/articles/1490090.pdf
- Data publikacji:
- 2012-02
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
85.70.-w
85.75.-d
75.75.Fk
64.75.Yz
87.85.fk - Opis:
- This paper highlights recent advances in synthesis and magnetotransport properties of magnetic Co nanoparticles. 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.
- Źródło:
-
Acta Physica Polonica A; 2012, 121, 2; 420-425
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł