Magnetic nanochains

TEM image of well-defined magnetic nanochain composed of six magnetic nanobeads.[1]

Magnetic nanochains are a class of new magnetoresponsive and superparamagnetic nanostructures with highly anisotropic shapes (chain-like) which can be manipulated using magnetic field and magnetic field gradient.[2] Such nanochains consist of self-assembled nanoparticle clusters which are magnetically assembled and fixated with an additional layer of silica. The primary building blocks of such advanced nanostructures are individual 10-nm sized superparamagnetic iron oxide nanoparticles (SPIONs). Nanoparticle clusters which are composed of a number of individual magnetic nanoparticles (ca. 100 SPIONs) are known as magnetic nanobeads with a diameter of 50–200 nanometers.[3]

The fabrication of magnetic nanochains with controlled aspect ratio, a uniform size, and a well-defined shape is the focus of many world-leading research groups and high-tech companies.[4] The magnetic nanochains possess attractive properties which are significant added value for many potential uses including magneto-mechanical actuation-associated nanomedicines in low and super-low frequency alternating magnetic field.[5]

References

  1. ↑ Kralj, Slavko; Makovec, Darko (27 October 2015). "Magnetic Assembly of Superparamagnetic Iron Oxide Nanoparticle Clusters into Nanochains and Nanobundles". ACS Nano. 9 (10): 9700–9707. doi:10.1021/acsnano.5b02328.
  2. ↑ Kralj, Slavko; Makovec, Darko (27 October 2015). "Magnetic Assembly of Superparamagnetic Iron Oxide Nanoparticle Clusters into Nanochains and Nanobundles". ACS Nano. 9 (10): 9700–9707. doi:10.1021/acsnano.5b02328.
  3. ↑ Tadic, Marin; Kralj, Slavko; Jagodic, Marko; Hanzel, Darko; Makovec, Darko (December 2014). "Magnetic properties of novel superparamagnetic iron oxide nanoclusters and their peculiarity under annealing treatment". Applied Surface Science. 322: 255–264. doi:10.1016/j.apsusc.2014.09.181.
  4. ↑ "Nanos SCI". nanos-sci.com.
  5. ↑ Golovin, Yuri I.; Gribanovsky, Sergey L.; Golovin, Dmitry Y.; Klyachko, Natalia L.; Majouga, Alexander G.; Master, Аlyssa M.; Sokolsky, Marina; Kabanov, Alexander V. (December 2015). "Towards nanomedicines of the future: Remote magneto-mechanical actuation of nanomedicines by alternating magnetic fields". Journal of Controlled Release. 219: 43–60. doi:10.1016/j.jconrel.2015.09.038.
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