Coherent hypersonic closed-pipe organ like modes in supported polymer films
Coherent hypersonic closed-pipe organ like modes in supported polymer films
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DOI：
10.1063/1.3605567
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发表时间：
2011-07-11
影响因子：
4
通讯作者：
Kent, A. J.
中科院分区：
文献类型：
--
作者：
Akimov, A. V.;Young, E. S. K.;Kent, A. J.
将高超声速波包注入到晶体衬底上不同厚度的聚合物薄膜中，检测到了量子化的振动模式。声谱显示了六个本地化模式的频率确定的边界条件的声学模式类似于在封闭的器官管道。的模式的衰减率被发现在千兆赫范围内的频率线性增加。(C)2011年美国物理学会。[doi 10.1063/1.3605567]
Hypersonic wavepackets were injected into polymer films of various thicknesses on a crystalline substrate, and quantized vibrational modes were detected. The acoustic spectrum showed up to six localized modes with frequencies determined by the boundary conditions for acoustic modes similar to those obtained in closed organ pipes. The decay rate of the modes was found to increase linearly with frequency in the gigahertz range. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3605567]