Shape transformation and self-alignment of Fe-based nanoparticles

Jeongmin Hong, Qiang Luo, Daesung Jung, Soong Geun Je, Yooseok Kim, Mi Young Im, Chan Cuk Hwang, Sakhrat Khizroev, Seungjun Chung, Long You

Research output: Contribution to journalArticlepeer-review


New types of functional material structures will emerge if the shape and properties are controlled in three-dimensional nanodevices. Possible applications of these would be nanoelectronics and medical systems. Magnetic nanoparticles (MNPs) are especially important in electronics such as magnetic storage, sensors, and spintronics. Also, in those that are used as magnetic resonance imaging contrasts, and tissue specific therapeutic agents, as well as in the labeling and sorting of cells, drug delivery, separation of biochemical products, and in other medical applications. Most of these applications require MNPs to be chemically stable, uniform in size, and controllable in terms of their magnetic properties and shape. In this paper three new functions of iron (Fe)-based nanoparticles are reported: shape transformation, oxidation prevention, and self-alignment. The shape of the Fe nanoparticles could be controlled by changing their oxidation states and properties by using a nanocarbon coating. Full field X-ray microscopy using synchrotron radiation revealed controllable magnetic properties of MNPs at the L3 edge which depended on the oxidation states. Then, inkjet printing was successfully performed to deposit a uniform layer of MNPs by the size.

Original languageEnglish (US)
Pages (from-to)2523-2528
Number of pages6
JournalNanoscale Advances
Issue number7
StatePublished - 2019

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Engineering(all)


Dive into the research topics of 'Shape transformation and self-alignment of Fe-based nanoparticles'. Together they form a unique fingerprint.

Cite this