| 학회 | 한국재료학회 |
| 학술대회 | 2009년 봄 (05/21 ~ 05/22, 무주리조트) |
| 권호 | 15권 1호 |
| 발표분야 | 전자재료 |
| 제목 | Graphene synthesized by the Thermal and Electrical Pulse Induced Evaporation |
| 초록 | Carbon-based nano materials have a significant effect on various fields such as physics, chemistry and material science. Therefore carbon nano materials have been investigated by many scientists and engineers. Especially, since graphene (hereafter GS), 2-dimemsonal carbon nanostructure, was experimentally discovered, GS have been tremendous attracted by both theoretical and experimental groups due to their extraordinary electrical, chemical and mechanical property. GS have an about 10 times electrical conductivity to the silicon material and the property is independent of temperature. Because silicon-based semiconductor approached to the limitation in miniaturization of scale size, graphene is a strong candidate substituting for silicon-based semiconductor. There are many limitations on making GS; fabricating large scale GS without any defect and controlling chirality of edge. Many scientists applied a mechanical cleavage method from graphite and a SiC decomposition method to the fabrication of GS. However these methods are on the basic research stage and have a many drawbacks. Our group fabricated GS through Thermoelectrical Pulse Induced Evaporation (TPIE) motivated by arc-discharge and field ion microscope. This method is using interaction of electrical pulse evaporation and thermal evaporation and useful to produce not only GS but also various carbon-based nano structure at feeble pulse and low temperature. On fabricating GS procedure, we could recognize the distinguishable condition to form a variety carbon nano structures. In this presentation we will show the structural properties of GS from TPIE. Transmission Electron Microscopy (TEM) and Optical Microscopy (OM) are convenience to reveal the structural characteristics. Moreover, we confirmed the number of layers of GS by Atomic Force Microscopy (AFM) and Raman spectroscopy. We believe our method is more advanced and easy to control of carbon nano structure. Reference 1. K.S. Novoselov et al, Science 306, 666(2004) 2. A. C. Ferrari et al., Phys. Rev. Lett. 97, 187401, (2006) |
| 저자 | H.Y Park1, H.W Kim2, C.E Song3, H.J Ji2, S.k Choi1 |
| 소속 | 1Department of Science and engineering, 2KAIST, 3Department of science and engineering |
| 키워드 | graphene; TPIE; Raman; AFM |
