Two-dimensional phononic crystal sensor based on a cavity mode
Two-dimensional phononic crystal sensor based on a cavity mode
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DOI：
10.1016/j.snb.2012.03.063
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发表时间：
2012-08-01
影响因子：
8.4
通讯作者：
Zubtsov, Mikhail
中科院分区：
文献类型：
--
作者：
Lucklum, Ralf;Ke, Manzhu;Zubtsov, Mikhail
声子晶体为声学液体传感器提供了一个创新平台。基于纵向腔模式，我们引入了一种使用平面内波入射的二维声子晶体的声学传感器系统。声子晶体由一块钢板组成，钢板上有两个规则的孔阵列和中间的空腔。孔和腔充满感兴趣的液体。我们从理论上和实验上证明了腔模引起的传输峰值可以用于传感器目的。理论模拟和实验测量表明传输峰值频率响应具有良好的一致性。该频率主要对声速敏感，从而对液体混合物的成分敏感。 (C) 2012 Elsevier B.V. 保留所有权利。
Phononic crystals offer an innovative platform for acoustic liquid sensors. Based on a longitudinal cavity mode, we introduce an acoustic sensor system using a two dimensional phononic crystal with in-plane wave incidence. The phononic crystal is made up of a steel plate having two regular arrays of holes and a cavity in-between. The holes and the cavity are filled with the liquid of interest. We both theoretically and experimentally demonstrate that the transmission peak caused by the cavity mode can be used for sensor purpose. Theoretical simulation and experimental measurement show good consistency in the response of the transmission peak frequency. This frequency is primarily sensitive to the speed of sound thereby sensitive to the composition of the liquid mixture. (C) 2012 Elsevier B.V. All rights reserved.