corner
corner
APS » Journals » Phys. Rev. Lett. » Volume 94 » Issue 11
< Previous Article | Next Article >

Phys. Rev. Lett. 94, 115501 (2005) [4 pages]

Hypersonic Phononic Crystals

Download: PDF (433 kB) Buy this article Export: BibTeX or EndNote (RIS)

T. Gorishnyy1,*, C. K. Ullal1, M. Maldovan1,2, G. Fytas3,4, and E. L. Thomas1,2
1Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
2Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
3Max Planck Institute for Polymer Research, P.O. 3148, 55128 Mainz, Germany
4Department of Materials Science and Technology, University of Crete, and FORTH, P.O. 1527, 71110 Heraklion, Greece

Received 8 October 2004; published 22 March 2005

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.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.94.115501
DOI:
10.1103/PhysRevLett.94.115501
PACS:
62.30.+d, 61.46.+w, 62.65.+k, 63.22.+m

*Electronic address: taras@mit.edu

 
< Previous Article | Next Article >