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Dual-Band Resonant Acoustic Metasurfaces from Nested Negative Effective Parameter Unit.

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Title: Dual-Band Resonant Acoustic Metasurfaces from Nested Negative Effective Parameter Unit.
Authors: Hao, Limei1 (AUTHOR) 22201104021@stu.xust.edu.cn, Liu, Dongan1,2 (AUTHOR), Yan, Xiaole1 (AUTHOR), Yang, Qingning1,2 (AUTHOR), Guo, Jifeng1 (AUTHOR), Tian, Xingchen1 (AUTHOR), Xie, You1 (AUTHOR), Pang, Shaofang1 (AUTHOR), Zhang, Tao1 (AUTHOR), Chen, Zhi2 (AUTHOR)
Source: Materials (1996-1944). Jun2025, Vol. 18 Issue 12, p2811. 12p.
Subjects: Unit cell, Acoustic imaging, Absolute value, Acoustic devices, Sound design
Abstract: Phase gradient acoustic metasurfaces often exhibit pronounced structural dependence in imaging applications, with significant performance variations arising from differences in the negative effective parameters of resonant unit cells. However, the relationship between imaging performance and negative effective parameters near resonance frequencies—particularly in multi-band nested structures—remains insufficiently studied. To address this knowledge gap, this work combines effective parameter theory with local resonance characteristics to construct a comparative model investigating how negative effective mass density and modulus influence the imaging quality of single-band and dual-band nested metasurfaces in series and parallel configurations. The results demonstrate that (1) for single-band structures, imaging performance positively correlates with the absolute value of negative effective parameters; (2) in dual-band configurations, smaller inter-band differences in negative parameter values yield more stable imaging; and (3) series-type nested structures exhibit superior reflection imaging performance compared to parallel-type structures, though with marginally reduced design flexibility. This study elucidates the fundamental mechanisms through which negative parameters govern acoustic metasurface imaging and provides theoretical foundations for designing multi-band acoustic devices. [ABSTRACT FROM AUTHOR]
Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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PubTypeId: academicJournal
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  Data: Dual-Band Resonant Acoustic Metasurfaces from Nested Negative Effective Parameter Unit.
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  Data: <searchLink fieldCode="AR" term="%22Hao%2C+Limei%22">Hao, Limei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> 22201104021@stu.xust.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Liu%2C+Dongan%22">Liu, Dongan</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yan%2C+Xiaole%22">Yan, Xiaole</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Qingning%22">Yang, Qingning</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Guo%2C+Jifeng%22">Guo, Jifeng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tian%2C+Xingchen%22">Tian, Xingchen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xie%2C+You%22">Xie, You</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pang%2C+Shaofang%22">Pang, Shaofang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Tao%22">Zhang, Tao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Zhi%22">Chen, Zhi</searchLink><relatesTo>2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Materials+%281996-1944%29%22">Materials (1996-1944)</searchLink>. Jun2025, Vol. 18 Issue 12, p2811. 12p.
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  Data: <searchLink fieldCode="DE" term="%22Unit+cell%22">Unit cell</searchLink><br /><searchLink fieldCode="DE" term="%22Acoustic+imaging%22">Acoustic imaging</searchLink><br /><searchLink fieldCode="DE" term="%22Absolute+value%22">Absolute value</searchLink><br /><searchLink fieldCode="DE" term="%22Acoustic+devices%22">Acoustic devices</searchLink><br /><searchLink fieldCode="DE" term="%22Sound+design%22">Sound design</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Phase gradient acoustic metasurfaces often exhibit pronounced structural dependence in imaging applications, with significant performance variations arising from differences in the negative effective parameters of resonant unit cells. However, the relationship between imaging performance and negative effective parameters near resonance frequencies—particularly in multi-band nested structures—remains insufficiently studied. To address this knowledge gap, this work combines effective parameter theory with local resonance characteristics to construct a comparative model investigating how negative effective mass density and modulus influence the imaging quality of single-band and dual-band nested metasurfaces in series and parallel configurations. The results demonstrate that (1) for single-band structures, imaging performance positively correlates with the absolute value of negative effective parameters; (2) in dual-band configurations, smaller inter-band differences in negative parameter values yield more stable imaging; and (3) series-type nested structures exhibit superior reflection imaging performance compared to parallel-type structures, though with marginally reduced design flexibility. This study elucidates the fundamental mechanisms through which negative parameters govern acoustic metasurface imaging and provides theoretical foundations for designing multi-band acoustic devices. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.3390/ma18122811
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        Text: English
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      – SubjectFull: Unit cell
        Type: general
      – SubjectFull: Acoustic imaging
        Type: general
      – SubjectFull: Absolute value
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      – SubjectFull: Acoustic devices
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      – SubjectFull: Sound design
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      – TitleFull: Dual-Band Resonant Acoustic Metasurfaces from Nested Negative Effective Parameter Unit.
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              M: 06
              Text: Jun2025
              Type: published
              Y: 2025
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