Hong, Jeongmin Luo, Qiang Jung, Daesung Je, Soong-Geun Kim, Yooseok Im, Mi-Young Hwang, Chan-Cuk Khizroev, Sakhrat Chung, Seungjun You, Long 2024-01-19T19:33:37Z 2024-01-19T19:33:37Z 2021-09-02 2019-07-01 2516-0230 https://pubs.kist.re.kr/handle/201004/119794 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 L-3 edge which depended on the oxidation states. Then, inkjet printing was successfully performed to deposit a uniform layer of MNPs by the size. English ROYAL SOC CHEMISTRY MAGNETIC NANOPARTICLES ALPHA-FE2O3 NANOPARTICLES GROWTH Shape transformation and self-alignment of Fe-based nanoparticles Article 10.1039/c9na00146h 1 NANOSCALE ADVANCES, v.1, no.7, pp.2523 - 2528 NANOSCALE ADVANCES 1 7 2523 2528 scopus 000478576700034 2-s2.0-85072035839 Chemistry, Multidisciplinary Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science Article MAGNETIC NANOPARTICLES ALPHA-FE2O3 NANOPARTICLES GROWTH