Alignment of graphene nanoribbons by an electric-field
Alignment of graphene nanoribbons by an electric-field
复制标题
DOI：
10.1016/j.carbon.2009.07.026
复制
发表时间：
2009-09
期刊：
影响因子：
--
通讯作者：
Zhao Wang
中科院分区：
文献类型：
--
作者：
Zhao Wang
在本文中，我们开发了一种分析方法来预测场致取向的悬臂石墨烯纳米带。这种方法是通过分子模拟使用本构原子静电模型进行验证。我们的研究结果表明，石墨烯的场取向的弯曲角大致与电场强度的平方成正比，或在小变形的石墨烯长度，而大致是无关的石墨烯宽度。有效的弯曲刚度和纵向极化率被发现是近似成比例的石墨烯长度的平方。与碳纳米管相比，石墨烯纳米带对外部电场的机械敏感性更高。
In this paper, we develop an analytical approach to predict the field-induced alignment of cantilevered graphene nanoribbons. This approach is validated through molecular simulations using a constitutive atomic electrostatic model. Our results reveal that graphene’s field-oriented bending angle is roughly proportional to the square of field strength or to the graphene length for small deformations, while is roughly independent of graphene width. The effective bending stiffness and the longitudinal polarizability are found to be approximately proportional to the square of graphene length. Compared with carbon nanotubes, graphene nanoribbons are found to be more mechanically sensitive to an external electric field.