Effect of defect configuration on the localization of phonons in two-dimensional phononic crystals |
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| Authors: | Yun He Fugen Wu Yuanwei Yao Xin Zhang Zhongfei Mu Shuya Yan Cong Cheng |
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| Institution: | 1. Department of Experiment Education, Guangdong University of Technology, Guangzhou 510006, China;2. School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China |
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| Abstract: | Effects of defect location on the defect frequency and the localization of phonons are investigated in two novel kinds of model, created by moving the location of the native cylinder and inserting an ad-cylinder in the central cellular respectively. The results show that the defect frequency in Model 1 is only related to the distance, while in Model 2, is related not only to the distance, but also to the moving direction. From the pressure distribution, obvious localization phenomenon is found. The position and shape of the localized energy are varied with the position of the defect. |
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| Keywords: | Phononic crystal Defect state Band gap Configuration |
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