2D phononic crystal sensor with normal incidence of sound
2D phononic crystal sensor with normal incidence of sound
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DOI：
10.1016/j.sna.2012.03.017
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发表时间：
2012-10-01
影响因子：
4.6
通讯作者：
Hempel, U.
中科院分区：
文献类型：
--
作者：
Zubtsov, M.;Lucklum, R.;Hempel, U.
的贡献提出了传感器的应用程序的共振诱导的非凡的传输通过一个定期的声子晶体组成的金属板在一个正方形晶格中的孔在正常入射的声音的周期性排列。已发现的特征透射峰强烈地依赖于声速的液体中的板浸入。如果存在与液体声速的有利关系，则相应的峰值最大频率可以用作液体混合物中组分浓度的量度。以水和丙醇的混合物为模型体系进行了实验验证。在这里，我们特别注意基于EFIT和COMSOL的数值计算，揭示更多的内部波的传播特性。实验研究与纹影法和激光干涉法支持的理论研究结果。(C)2012爱思唯尔有限公司版权所有。
The contribution presents the sensor application of a resonance-induced extraordinary transmission through a regular phononic crystal consisting of a metal plate with a periodic arrangement of holes in a square lattice at normal incidence of sound. The characteristic transmission peak has been found to strongly depend on sound velocity of the liquid the plate is immersed in. The respective peak maximum frequency can serve as measure for the concentration of a component in the liquid mixture, if a beneficial relation to the speed of sound of the liquid exists. Experimental verification has been performed with mixtures of water and propanol as model system. Here we especially pay attention to numerical calculations based on EFIT and COMSOL which reveal more insides to the wave propagation characteristics. Experimental investigations with Schlieren method and laser interferometry support the theoretical findings. (C) 2012 Elsevier B.V. All rights reserved.