Multiscale simulations of swift heavy ion irradiation effect on bilayer graphene

IEICE Electronics Express

Hongxia Liu¹  Qianqiong Wang¹  Dongdong Zhao¹  Shulong Wang¹  Shupeng Chen¹  Chenxi Fei¹ 

[1] School of Microelectronics, Xidian University

关键词: bilayer graphene;    swift heavy ion;    multiscale simulation;   

DOI  :  10.1587/elex.13.20151040

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(12)The swift heavy ion irradiation effect on bilayer graphene is investigated. The radial dose distributions of delta rays produced by bismuth ions are calculated by Monte Carlo method. The radial dose rapidly decreases with increasing the distance from the track center. The energy deposited into the lattice due to electron-phonon coupling is simulated by molecular dynamics method. By given energy to a cylindrical region, the stress accumulates in this area. And then, a pressure wave emanates outwards, which leads to the atoms in the thermal spike region escaping from the upper and lower surface in the form of clusters. As a consequence, the defect configuration is composed of a central pore with radius larger than 0.5 nm and surrounding carbon chain loops.

【 授权许可】

Unknown