%0 Journal Article
%T Molecular dynamics simulation of resonance properties of strain graphene nanoribbons<br>应变石墨烯纳米带谐振特性的分子动力学研究
%A Gu Fang
%A Zhang Jia-Hong
%A Yang Li-Juan
%A Gu Bin
%A <br>顾芳
%A 张加宏
%A 杨丽娟
%A 顾斌
%J 物理学报
%D 2011
%I 
%X Starting from the energy conversion and energy conservation law in the constant-NVE ensemble, the molecular dynamics method using the COMPASS force field was applied to investigate the dynamic properties of graphene nanoribbons (GNRs) together with the GNR-based strain sensors. The following results were obtained: (a) the nonlinear response dominates the dynamic behavior of GNRs, and their ultra-high fundamental frequencies are closely related with the length and boundary conditions; (b) the effect of uniaxial tensile strain on the fundamental frequencies of GNRs is significant and strongly depends on boundary conditions, and the GNR-based strain sensor clamped on four edges has a higher frequency shift, and its sensitivity is up to 7800 Hz / nanostrain, much higher than that of carbon nanotube-based strain sensor with the same length; (c) the resonant characteristics of GNRs and GNR-based strain sensors are insensitive to the chirality. The obtained results suggest that, through cutting the appropriate size and setting the boundary conditions, the GNRs could be used to design a new generation of nanoelectromechanical system (NEMS) resonators and strain sensors, owing to their ultra-low density and ultra-high fundamental frequencies as well as ultra-high sensitivity without considering the impact of chirality.
%K graphene nanoribbon
%K molecular dynamics
%K strain
%K fundamental frequency<br>石墨烯纳米带
%K 分子动力学
%K 应变
%K 基波频率
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=0E0D16C392E579C55E37E168DA9B6EC7&yid=9377ED8094509821&vid=BFE7933E5EEA150D&iid=94C357A881DFC066&sid=26857CDF59A0AC8B&eid=20ADD38F841C6A4B&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=33