【摘 要】
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The effect of the number of defect particles on the structure and dispersion relations of a two-dimensional(2D)dust lattice is studied by molecular dynamics(MD)simulation.The dust lattice structures are characterized by particle distri-bution,nearest neig
【机 构】
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College of Science,China Agricultural University,Beijing 100083,China;College of Information and Ele
论文部分内容阅读
The effect of the number of defect particles on the structure and dispersion relations of a two-dimensional(2D)dust lattice is studied by molecular dynamics(MD)simulation.The dust lattice structures are characterized by particle distri-bution,nearest neighbor configuration and pair correlation function.The current autocorrelation function,the dispersion relation and sound speed are used to represent the wave properties.The wave propagation of the dust lattice closely re-lates to the lattice structure.It shows that the number of defect particles can affect the dust lattice local structure and then affect the dispersion relations of waves propagating in it.The presence of defect particles has a greater effect on the trans-verse waves than on the longitudinal waves of the dust lattice.The appropriate number of defect particles can weaken the anisotropy property of the lattice.
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