Tailoring the phonon band structure in binary colloidal mixtures.
Tailoring the phonon band structure in binary colloidal mixtures.
复制标题
定制二元胶体混合物中的声子能带结构。
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
C. N. Likos
中科院分区：
文献类型：
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作者：
Julia Fornleitner;G. Kahl;C. N. Likos
我们分析了二维偶极胶体粒子混合物形成的周期结构的声子谱。这些混合物显示出各种各样的复杂有序组态[J.Fornleitner，Soft Matter 4,480(2008)]，允许系统地研究随后的声子谱和控制声子间隙。我们展示了如何通过改变磁化率、组成和两个组分之间的质量比来控制声子带的形状和声子带隙的数目和宽度。
We analyze the phonon spectra of periodic structures formed by two-dimensional mixtures of dipolar colloidal particles. These mixtures display an enormous variety of complex ordered configurations [J. Fornleitner, Soft Matter 4, 480 (2008)], allowing for the systematic investigation of the ensuing phonon spectra and the control of phononic gaps. We show how the shape of the phonon bands and the number and width of the phonon gaps can be controlled by changing the susceptibility ratio, the composition, and the mass ratio between the two components.