Magnetic properties of DNA-templated Co/Cu naonoparticle chains

You Hui Gao, Ling Wei, Chun Lei Gao, Wei Xing Xia, Daisuke Shindo

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1 Citation (Scopus)


According to ultraviolet (UV)-vis absorption spectra recorded in the DNA metallization process, DNA-templated Co/Cu binary nanoparticle chains are fabricated by incubating genome DNA of paralichthys olivaceus muscle in CoCl2 and CuCl2 mixture solution for 20 hours and reducing the complex for 2 hours. Transmission electron microscopy observation indicates that Co and Cu nanoparticles with 20 nm in diameter were randomly dispersed on the DNA template. The superconducting quantum interference device (SQUID) measurements display that the magnetic interaction between cobalt particles is greatly decreased by the copper particle. With increasing copper content, the coercivity of the systems enhance from 9 Oe to 100 Oe (1 Oe=79.5775 A/m).

Original languageEnglish
Article number088103
JournalChinese Physics B
Issue number8
Publication statusPublished - 2010 Aug 1


  • Co/Cu nanoparticle
  • DNA-templated
  • Magnetic interaction

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Gao, Y. H., Wei, L., Gao, C. L., Xia, W. X., & Shindo, D. (2010). Magnetic properties of DNA-templated Co/Cu naonoparticle chains. Chinese Physics B, 19(8), [088103].