کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1859144 | 1530576 | 2015 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Novel negative mass density resonant metamaterial unit cell Novel negative mass density resonant metamaterial unit cell](/preview/png/1859144.png)
• A novel acoustic metamaterial unit cell provides Lorentz-type resonant effective mass density.
• Analytical formula for effective mass density is derived.
• Acoustic bandstop medium and left-handed metamaterial based on the novel unit cell are presented.
• Modified version of the unit cell, operating at two independent frequencies, is proposed.
In this paper a novel resonant unit cell of one-dimensional acoustic metamaterials is presented, which exhibits negative effective mass density. We theoretically analyze the unit cell and develop a closed analytical formula for its effective mass density. Then we proceed to demonstrate left-handed propagation of acoustic waves using the proposed unit cell. Finally, we present its dual-band version, capable of operating at two independent frequencies.
Journal: Physics Letters A - Volume 379, Issues 1–2, 2 January 2015, Pages 33–36