平面内可变角入射二维声子晶体带隙特征的研究#br#

doi:10．14139/j．cnki．cn22－1228．2026．03．009

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摘要利用双臂可旋转平台，设计搭建了一套二维平面内可变角入射声子晶体带隙特征测量系统，在该系统上进行了声子晶体频响特性测试，测试结果和理论计算符合较好，带隙上边界略向低频方向移动。入射角小于 30°时，声子晶体的带隙宽度随入射角增大呈现缓慢变化趋势，整体保持稳定。入射角度较大时，带隙宽度随入射角增大呈现显著的快速减小趋势，且伴随明显的波动。填充率在 0．44 ~0．68 间变化时，随着填充率增加，带隙宽度也略微变宽。实验和理论结果对比验证了装置的可靠性。

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	刘飞宇
	邵长金
	王森
	杨振清

关键词: 声子晶体带隙入射角填充率

Abstract: A two-dimensional planar variable-angle incident phonon crystal bandgap characteristic measurement system was designed and constructed using a dual-arm rotatable platform．The frequency response characteristics of phonon crystals were tested on this system，and the test results were in good agreement with the theoretical calculations． The upper boundary of the bandgap slightly shifted towards the low-frequency direction．When the incident Angle is less than 30 degrees，the bandgap width of the phonon crystal shows a slow changing trend as the incident Angle increases，and remains stable overall．When the incident Angle is large，the bandgap width shows a significant and rapid decreasing trend as the incident Angle increases，accompanied by obvious fluctuations．When the fill rate varies from 0．44 to 0．68，the band gap width increases slightly as the fill rate increases． The comparison between experimental and theoretical results verified the
reliability of the device．

Key words: Phonon crystal band gap angle of incidence filling rate

发布日期: 2026-06-25

ZTFLH:

TB 535

基金资助: 产学合作育人项目( 00J24048)

引用本文:

刘飞宇, 邵长金 , 王森, 杨振清. 平面内可变角入射二维声子晶体带隙特征的研究#br#[J]. 大学物理实验, 2026, 39(3): 52-58.
LIU Feiyu, SHAO Changjin, WANG Sen, YANG Zhenqing. Study on the Bandgap Characteristics of Two-dimensional phonon crystals incident at Variable Angles in the Plane#br#. Physical Experiment of College, 2026, 39(3): 52-58.

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https://dawushiyan.jlict.edu.cn/CN/ 10．14139/j．cnki．cn22－1228．2026．03．009 或 https://dawushiyan.jlict.edu.cn/CN/Y2026/V39/I3/52

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