微粒与单轴晶体间的范德华相互作用及其对氢原子和多壁碳纳米管的应用
Van der Waals interaction between microparticle and uniaxial crystal with application to hydrogen atoms and multiwall carbon nanotubes
摘要：
本文将van der Waals力的Lifshitz理论推广到原子（分子）与单轴晶体的平面、各向同性材料或单轴晶体构成的长圆柱或圆柱壳相互作用的情形。对于半空间或单轴晶体平板附近的微粒，给出了范德瓦尔斯和Casimir-Polder相互作用自由能的精确表达式。得到了微粒-圆柱相互作用自由能的近似表达式，当微粒-圆柱间距远小于圆柱半径时，该表达式变得精确。用所得的表达式研究了氢原子（分子）与石墨板或多壁碳纳米管之间的范德华相互作用。为了实现这一点，石墨介电常数沿虚频轴的行为被发现使用的普通和非常射线的石墨的复折射率的光学数据。结果表明，氢原子在多壁碳纳米管内部的位置比在外部的位置具有能量优势。
英文摘要：
The Lifshitz theory of the van der Waals force is extended for the case of an atom (molecule) interacting with a plane surface of an uniaxial crystal or with a long solid cylinder or cylindrical shell made of isotropic material or uniaxial crystal. For a microparticle near a semispace or flat plate made of an uniaxial crystal the exact expressions for the free energy of the van der Waals and Casimir-Polder interaction are presented. An approximate expression for the free energy of microparticle- cylinder interaction is obtained which becomes precise for microparticle-cylinder separations much smaller than cylinder radius. The obtained expressions are used to investigate the van der Waals interaction between hydrogen atoms (molecules) and graphite plates or multiwall carbon nanotubes. To accomplish this the behavior of graphite dielectric permittivities along the imaginary frequency axis is found using the optical data for the complex refractive index of graphite for the ordinary and extraordinary rays. It is shown that the position of hydrogen atoms inside multiwall carbon nanotubes is energetically preferable compared with outside.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
