그래핀 연구실

Graphene is a single layer of graphite, composed of only atoms. Unlike other carbon allotropes(diamond, fullerene, carbon nanotubes, etc.), the graphene is transparent, flexible and highly conducting. Plasma-assisted functionalization of 2D nanomaterials and its effect on electrical properties, chemical reactivies, and mechanical properties. The optical property of Graphene is very unique. Even though graphene has just one atomic thickness, it is observable by traditional optical microscope when it is deposited onto the surface of SiO2(~300nm)/Si wafer. This is because of the interference phenomenon which occurs from the multiple reflections between graphene and SiO2 layer. From the early ages of graphene research, Raman spectroscopy has been regarded as one of the powerful tools to characterize the optical properties of graphene. For example, it is easily used to determine the graphene layer thickness by examining the 2D peak shape and the peak ratio between G and 2D peaks in Raman spectrum. Very recently, our group developed the selective n-type doping methodology in large scale graphene by photo-patterned gold nanoparticle and UV / Ozone-oxidized large-scale graphene platform with large chemical enhancement in SERS. With the large scale high quality graphene, we firstly expect to examine the chemical interaction between various molecules and graphene. And we also expect to fabricate the high enhancement and robust SERS (Surface Enhanced Raman Spectroscopy) substrate platform. Quantum Dot can be considered as a piece of metal or a semiconductor box containing well-defined electrons which are available in need. The number of electrons in quantum dot can be controlled by the change of static environment of the quantum dot. The size of quantum dot can be varied from few