Projects Synthesis Materials Fabrication Devices Characterization Theory
This year we have nearly 30 projects covering a wide range of nanoscience, including facile synthesis of organic and inorganic nanowires and nanostructures, novel fabrication routes, building of functional bioarchitectures, nanostructured devices and nanowire applications. Please browse the menu (hover on a group and click on the project of choice) to view brief overviews of our projects.
High quality single crystalline Nickel Oxide (NiO) nanowires synthesized by vapor transport process
Among transition metal oxides, Nickel oxide (NiO) has attracted considerable attention recently because of its resistive switching behavior. To achieve high-density memory devices and improve their performance it is crucial to reduce the material size. In addition, the details of NiO resistive memory switching mechanisms are not well understood. Thus the single crystal NiO nanowires are strongly desired for understanding the resistive switching mechanisms. We synthesized high quality single crystalline NiO nanowires without catalyst via a vapor-phase transport process. The morphology and orientation of epitaxial synthesized NiO nanowires were examined with SEM and TEM. The electrical properties and underlying physics accounting for bi-stable switching behavior mechanism will be investigated in these single crystal NiO Nanowires by electrical transport studies.

FE-SEM image of single crystal NiO nanowires

HRTEM and SAED of single crystal NiO nanowire

[1] Jang A-Rang, Kim Ki-chul, Yu Sang-Hoon, Park Sungho, Kang Dae Joon “High quality single crystalline NiO nanowires grown by a thermal CVD technique” The 83rd Korean Physical Society, Korea, 2007/ 4.19 - 4.20
[2] Jang A-Rang, Lee Suok, Yang mino, Cha Seung Nam, Dea Joon Kang “High quality single crystalline Nickel Oxide (NiO) nanowires synthesized by vapor transport process” The 85th Korean Physical Society, Korea, 2009/ 4.23 - 4.24