Study of Magnetic Force Microscopy in Plant leaf-derived Graphene Quantum Dot Clusters

Chiashain Chuang^1*, Masahiro Matsunaga², Tian-Hsin Wang¹, Prathik Roy³, Rini Ravindranath³, Meenakshi Ananthula¹, Nobuyuki Aoki⁴

¹Department of Electronic Engineering, Chung Yuan Christian University, Taoyuan, Taiwan
²Institute of Materials and Systems for Sustainability, Nagoya University, Nagoya, Japan
³Department of Chemistry, National Taiwan University, Taipei, Taiwan
⁴Department of Materials Science, Chiba University, Chiba, Japan

* Presenter:Chiashain Chuang, email:chiashain@cycu.edu.tw

Within this talk, I would present Magnetic force microscopy (MFM) utilized to characterize nanostructured plant leaf-derived graphene quantum dot clusters (GQDCs). Investigation of the MFM signal reveals that the magnetic response of plant leaf-derived GQDCs are dependent on the height and width of GQDCs. However, the smaller width and height of GQDCs have not shown any observable magnetic signals. Importantly, experimental analyses suggest the magnetic signal of GQDCs can effectively be detected in a plane at room temperature. These results could pave a way to be of great advantage for future graphene-based spin manipulation quantum devices.

Keywords: Graphene quantum dots, Magnetic force microscopy, Spin, Nano, Magnetism