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Acoustic Metamaterial Exhibiting Four Different Sign Combinations of Density and Modulus by Yong Mun Seo; Jong Jin Park; Seung Hwan Lee; Choon Mahn Park; Chul Koo Kim; Sam Hyeon Lee is a Physics and Astronomy article available to read on EtoBox.
What is Acoustic Metamaterial Exhibiting Four Different Sign Combinations of Density and Modulus about?
We fabricated a double negative acoustic metamaterial which consisted of Helmholtz resonators and membranes. Experimental data on the transmission and dispersion relation are presented. The system exhibited three frequencies where the acoustic state makes sharp transitions from density negative (ρ-NG) to double negative (DNG), modulus negative (B-NG), and double positive (DPS) in sequence with the frequency. We observed a wide range of negative refractive indexes from −0.06 to −3.7 relative to air, which will allow for new acoustic transformation techniques.
Who reads Acoustic Metamaterial Exhibiting Four Different Sign Combinations of Density and Modulus?
It is typically read by researchers, students, and practitioners in Physics and Astronomy.
- Author
- Yong Mun Seo; Jong Jin Park; Seung Hwan Lee; Choon Mahn Park; Chul Koo Kim; Sam Hyeon Lee
- Publisher
- AIP Publishing
- Published
- 2012
- Language
- EN
- Field
- Physics and Astronomy (Physical Sciences)