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Design of an acoustic superlens using single-phase metamaterials with a star-shaped lattice structure
Chen M(陈猛); Jiang H(姜恒); Zhang H; Li DS; Wang YR(王育人)
2018-01-30
发表期刊SCIENTIFIC REPORTS
卷号8页码:1861
ISSN2045-2322
摘要

We propose a single-phase super lens with a low density that can achieve focusing of sound beyond the diffraction limit. The super lens has a star-shaped lattice structure made of steel that offers abundant resonances to produce abnormal dispersive effects as determined by negative parameter indices. Our analysis of the metamaterial band structure suggests that these star-shaped metamaterials have double-negative index properties, that can mediate these effects for sound in water. Simulations verify the effective focusing of sound by a single-phase solid lens with a spatial resolution of approximately 0.39 lambda. This superlens has a simple structure, low density and solid nature, which makes it more practical for application in water-based environments.

DOI10.1038/s41598-018-19374-2
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收录类别SCI
语种英语
WOS记录号WOS:000423508900032
关键词[WOS]Negative Refraction ; Index ; Waves
WOS研究方向Multidisciplinary Sciences
WOS类目Science & Technology - Other Topics
项目资助者National Natural Science Foundation of China [11202211, 11602269] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB22040301] ; Research Program of Beijing [Z161100002616034, Z171100000817010]
论文分区二类/q1
力学所作者排名1
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文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/77796
专题国家微重力实验室
通讯作者Jiang H(姜恒); Wang YR(王育人)
作者单位1.Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Acoust, State Key Lab Acoust, Beijing 100190, Peoples R China
4.China Ship Sci Res Ctr, Natl Key Lab Ship Vibrat & Noise, Wuxi 214082, Peoples R China
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GB/T 7714
Chen M,Jiang H,Zhang H,et al. Design of an acoustic superlens using single-phase metamaterials with a star-shaped lattice structure[J]. SCIENTIFIC REPORTS,2018,8:1861.
APA Chen M,Jiang H,Zhang H,Li DS,&Wang YR.(2018).Design of an acoustic superlens using single-phase metamaterials with a star-shaped lattice structure.SCIENTIFIC REPORTS,8,1861.
MLA Chen M,et al."Design of an acoustic superlens using single-phase metamaterials with a star-shaped lattice structure".SCIENTIFIC REPORTS 8(2018):1861.
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