Skip to main content Accessibility help
×
Home

Possible Operation of Periodically Layered Nanocrystalline Porous Silicon as an Acoustic Band Crystal Device

  • Akira Kiuchi (a1), Bernard Gelloz (a1), Akira Kojima (a1) and Nobuyoshi Koshida (a1)

Abstract

It is shown that the periodic stacked structures of nanocrystalline porous silicon (nc-PS) layers with controlled densities and elastic properties act as an acoustic band crystal (ABC) device. Supposing that the periodic nc-PS layers are formed by conventional modulated anodization technique to fabricate the multi-layered distributed Brag reflection mirror, the acoustic wave propagation modes are investigated theoretically for various structural parameters. According to the calculation results, a significant acoustic band gaps are generated in the ultrasonic regions due to a big contrast in the elastic constant produced between low-porosity and compact nc-PS layers. The propagation of acoustic wave can be completely suppressed in the characteristic band determined from designed parameters. The present result suggests further possibility of the nc-PS layer as a key component of ABC devices.

Copyright

References

Hide All
1. Shinoda, H., Nakajima, T., Yoshiyama, M. and Koshida, N., Nature 400, 853 (1999).
2. Takahashi, M. and Koshida, N., J. Appl. Phys. 86, 5274 (1999).
3. Jusserand, B. et al., Phys. Rev. B 33, 2897 (1986).
4. Bellet, D., in Properties of Porous Silicon, Chapt 4, ed. Canham, L. (IEE, 1997) pp. 127131.4.
5. Rytov, S. M., Sov. Phys. Acoust. Vol. 2 68 (1956).

Possible Operation of Periodically Layered Nanocrystalline Porous Silicon as an Acoustic Band Crystal Device

  • Akira Kiuchi (a1), Bernard Gelloz (a1), Akira Kojima (a1) and Nobuyoshi Koshida (a1)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed