Acoustic properties of colloidal crystals

被引：57

作者：

Psarobas, IE

Modinos, A

Sainidou, R

Stefanou, N

机构：

[1] Natl Tech Univ Athens, Dept Phys, GR-15773 Athens, Greece

[2] Univ Athens, Sect Solid State Phys, GR-15784 Athens, Greece

来源：

PHYSICAL REVIEW B | 2002年 / 65卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.65.064307

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a systematic study of the frequency band structure of acoustic waves in crystals consisting of nonoverlapping solid spheres. in a fluid. We consider colloidal crystals consisting of polystyrene spheres in water, and an opal consisting of close-packed silica spheres in air. The opal exhibits an omnidirectional frequency gap of considerable width; the colloidal crystals do not. The physical origin of the bands are discussed for each case in some detail. We also present results on the transmittance of finite slabs of the above crystals.

引用

页码：643071 / 643076

页数：6

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