کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1812493 | 1025617 | 2010 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Band gaps of acoustic waves propagating in a solid/liquid phononic Fibonacci structure
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Band gaps of acoustic waves propagating in a solid/liquid phononic Fibonacci structure Band gaps of acoustic waves propagating in a solid/liquid phononic Fibonacci structure](/preview/png/1812493.png)
چکیده انگلیسی
We study the acoustic–phonon transmission spectra in quasiperiodic (Fibonacci type) superlattices made up from the solid crystal quartz and the liquid mercury (Hg). The phonon dynamics is described by a coupled elastic equations within the static field approximation model. We use a transfer-matrix treatment to simplify the algebra, which would be otherwise quite complicated, allowing a neat analytical expression for the phonon transmission coefficients. Numerical results is presented and discussed for both the transmittance spectra as well as the localization factor derived from the Lyapunov exponent, showing that the Fibonacci quasiperiodic structure acts as a filter for the phonon's transmission spectra.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 405, Issue 17, 1 September 2010, Pages 3704–3708
Journal: Physica B: Condensed Matter - Volume 405, Issue 17, 1 September 2010, Pages 3704–3708
نویسندگان
E.L. Albuquerque, P.D. Sesion Jr.,