Effective substrate potentials with quasicrystalline symmetry depend on the size of the adsorbed particles

Effective substrate potentials with quasicrystalline symmetry depend on the size of the adsorbed particles
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具有准晶对称性的有效基质电势取决于吸附颗粒的尺寸

DOI:
10.1140/epje/i2015-15054-y
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发表时间:
2015
期刊:
The European Physical Journal E
影响因子:
--
通讯作者:
M. Schmiedeberg
M. Schmiedeberg
中科院分区:
--
文献类型:
--
作者:
F. Rühle;M. Sandbrink;H. Stark;M. Schmiedeberg

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摘要本文探讨了扩展粒子吸附在准晶体表面时所经历的有效电位景观。通常,这些是具有长程有序但没有平移对称的固体。有效电势在很大程度上取决于吸附颗粒的大小。我们展示了改变粒子半径如何改变有效准晶图的所谓局部同构类。这意味着不同粒径的有效势不能直接相互映射。我们的理论预测被蒙特卡罗模拟所证实。这些结果对于受准晶对称激光场影响的不同大小的胶体粒子以及在金属准晶表面沉积延伸分子的系统都是重要的。图形抽象
AbstractWe explore the effective potential landscapes that extended particles experience when adsorbed on the surface of quasicrystals. Commonly, these are solids with long-ranged order but no translational symmetry. The effective potentials significantly depend on the size of the adsorbed particles. We show how changing the particle radius changes the so-called local isomorphism class of the effective quasicrystalline pattern. This means effective potentials for different particle sizes cannot directly be mapped onto each other. Our theoretical predictions are confirmed by Monte Carlo simulations. The results are important for colloidal particles with different sizes that are subjected to laser fields with quasicrystalline symmetry as well as for systems where extended molecules are deposited onto the surface of metallic quasicrystals.Graphical abstract
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