Hypersonic phononic crystals

被引：276

作者：

Gorishnyy, T

Ullal, CK

Maldovan, M

Fytas, G

Thomas, EL

机构：

[1] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA

[2] MIT, Inst Soldier Nanotechnol, Cambridge, MA 02139 USA

[3] Max Planck Inst Polymer Res, D-55128 Mainz, Germany

[4] FORTH, Iraklion 71110, Greece

[5] Univ Crete, Dept Mat Sci & Technol, Iraklion 71110, Greece

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.94.115501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this Letter we propose the use of hypersonic phononic crystals to control the emission and propagation of high frequency phonons. We report the fabrication of high quality, single crystalline hypersonic crystals using interference lithography and show that direct measurement of their phononic band structure is possible with Brillouin light scattering. Numerical calculations are employed to explain the nature of the observed propagation modes. This work lays the foundation for experimental studies of hypersonic crystals and, more generally, phonon-dependent processes in nanostructures.

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页数：4

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