UNIDIRECTIONAL AND TUNABLE ACOUSTIC DIODE MADE BY ASYMMETRIC DOUBLE LAYER METALLIC GRATING WITH PERIODICAL STRUCTURE
This paper theoretically investigates unidirectional and tunable acoustic transmission in a structure of double layer metallic grating immersed in water.Though numerical simulations,we find that the asymmetric acoustic transmission can be achieved by changing the width and the thickness of the double layer metallic gratings.We also find that the contrast transmission ratio of unidirectional transmission is highly influenced by the ratio of the thickness h1/h2.And further study indicates that the working frequency range of the asymmetric transmission can be easily controlled by adjusting the location of the double layer metallic gratings.This constructed acoustic system shows many potential applications of medical ultrasound diagnosis and related fields.
Acoustic transmission Asymmetric transmission Double layer metallic plate Periodical structure
Jie LI Jiu-jiu CHEN
State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, College of Mechanical and Vehicle Engineering, Hunan University, Changsha, 410082, Peoples Republic of China
国际会议
The 2016 Symposium on Piezoelectricity,Acoustic Waves and Device Applications(2016全国压电和声波理论及器件技术研讨会)
西安
英文
379-382
2016-10-21（万方平台首次上网日期，不代表论文的发表时间）