MP  >> Vol. 7 No. 5 (September 2017)

    Theoretical Study on Thermal Expansions of Cyclic Molecules in Molecular Machines

  • 全文下载: PDF(640KB) HTML   XML   PP.163-168   DOI: 10.12677/MP.2017.75018  
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唐 婧:湖南师范大学物理与信息科学学院,湖南 长沙;
黄建平:湖南师范大学信息科学与工程学院,湖南 长沙

分子机器环状分子热膨胀晶格动力学尺寸效应Molecular Machine Cyclic Molecule Thermal Expansion Lattice Dynamics Size Effect



The formulas for thermal expansions of interatomic distances and thermal expansion coefficients of cyclic molecules in molecular machines were derived based on the lattice dynamics, and then the numerical calculations were carried out. The numerical results show that at the low temperature, the thermal expansions of interatomic distances in short cyclic molecules increase and thermal expansion coefficients of short cyclic molecules decrease rapidly, and they tend to these values of cyclic molecules with infinite lengths respectively when the lengths of cyclic molecules increase, therefore there are size effects of the thermal expansion properties in short cyclic molecules; the size effects of thermal expansion properties in cyclic molecules are weakened obviously when temperature increases and almost disappear at high temperature. It is concluded that the size effects of thermal expansion properties in short cyclic molecules of molecular machines must be considered at low temperature.

唐婧, 黄建平. 分子机器中环状分子热膨胀性质的理论研究[J]. 现代物理, 2017, 7(5): 163-168.


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