测试科学与仪器2017，Vol.8Issue(3)：300-306,7.DOI:10.3969/j.issn.1674-8042.2017.03.015
复合材料形成的超材料柱体在空气中的声聚焦效应
Acoustic focusing effect of composite metamaterial column in air
摘要
Abstract
The acoustic focusing effect of metamaterial has a wide range of applications in medicine,acoustic imaging,signal detection,etc.This paper presents an acoustic metamaterial applied to the acoustic focusing effect.The formation of acoustic metamaterial is designed into a cylindrical structure with three layers of ludox,cork and fluid rubber,which can produce a focusing phenomenon when acoustic waves propagate in air.For these strange phenomena,a scientific description is given theorietically.It can also be concluded that when the frequency of the incident acoustic wave increases,the number of peripheral bands outside the focusing poles will increase periodically.Besides,there are numerous groups of multipolar focusing phenomena in high frequency.The design of this acoustic metamaterial is successful through theorietical and experimental verification,therefore,it can be applied to acoustic communication and test.关键词
声聚焦效应/声学异向介质/超材料柱/多极聚焦现象Key words
acoustic focusing effect/acoustic metamaterial/metamaterial column/multipolar focusing phenomena分类
数理科学引用本文复制引用
韩建宁,甄文祥,秦佳杰,吴煜鹏,唐帅..复合材料形成的超材料柱体在空气中的声聚焦效应[J].测试科学与仪器,2017,8(3):300-306,7.基金项目
National Natural Science Foundation of China (No.61671414) （No.61671414）
Natural Science Foundation for Young Scientists of Shanxi Province,China (No.201601D202035) （No.201601D202035）
