期刊
APPLIED PHYSICS LETTERS
卷 101, 期 14, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4755785
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资金
- Fondazione Cariplo via the project SpinBioMed [2008.2330]
- Politecnico di Milano via the project 5 per mille junior Magnetically Controlled Single Molecule Delivery (MCSMD)
- Etortek Program [IE11-304]
- Basque Government under the Etortek Program [IE11-304]
- Spanish Ministry of Science and Education [MAT2009-07980]
The remote manipulation of micro and nano-sized magnetic particles carrying molecules or biological entities over a chip surface is of paramount importance for future on-chip applications in biology and medicine. In this paper, we present a method for the on-chip demultiplexing of individual magnetic particles using bifurcated magnetic nano-conduits for the propagation of constrained domain walls (DWs). We demonstrate that the controlled injection and propagation of a domain wall in a bifurcation allow capturing, transporting, and sorting a single magnetic particle between two predefined paths. The cascade of n levels of such building blocks allows for the implementation of a variety of complex sorting devices as, e. g., a demultiplexer for the controlled sorting among 2(n) paths. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4755785]
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