碳管与液晶同为各向异性材料。碳管具有液晶行为，利用碳管的液晶性可实现其有序取向，表现优异物化性能。Frank弹性形变理论是液晶得以广泛应用的理论基石,简单的Frank弹性常数即可完全描述材料的各向异性及其对外界的响应。本项目旨在研究碳管的Frank弹性特征；拟基于其液晶性缺陷表征，获知适于碳管的Frank弹性。缺陷的细致形貌体现碳管自身的弯曲特性，而缺陷整体所呈现的是各种缺陷类型，不同缺陷的出现概率将反映碳管的Frank弹性各向异性。对碳管Frank弹性的探索，益于对其液晶性的认识，并推动其在未来微电子领域的应用研究。

Both carbon nanotubes (CNTs) and liquid crystals (LCs) are anisotropic materials. Because of rodlike geometry, CNTs have liquid crystallinity, which can make their orientation ordered, behaving special physicochemical property for them. Frank elastic deformation theory in LCs sciences is the fundamental theory, implying LCs' broad applications, and the involved simple elastic constants can completely describe their anisotropy and their responsiveness to the foreign environment. The project aims at investigating Frank elastic anisotropy belonging to CNTs based on their liquid crystalline defects. The detailed morphology about defects can embody curved characteristic for individual CNTs, and the overall presented probability for various types of defects will reflect CNTs' elastic anisotropy. The exploration about Frank elasticity for CNTs will be beneficial to deeply realize their liquid crystallinty, and further to efficiently promote their promising application in the future microelectronic field.