2010/01/31 by Shanshan Yao, Xiaoming Zhou, Gengkai Hu · 1 citation
Engineering · Materials Science · Physics and Astronomy · #Acoustic Wave Phenomena Research #Acoustic metamaterials #Acoustics #Band gap #Classical mechanics #Computational physics #Condensed matter physics #Effective mass (spring–mass system) #Lattice (music) #Mass gap #Mechanics #Metamaterial #Metamaterials and Metasurfaces Applications #Microwave Engineering and Waveguides #Negative mass #Negative refraction #Optics #Physics #Quantum mechanics #physics.class-ph
paper · pdf · doi:10.1088/1367-2630/12/10/103025
published as New Journal of Physics 12 (2010) 103025 · This paper has been withdrawn by the authors. New Journal of Physics 12 (2010) 103025
openalex publication_date 2010/10/14 · arxiv created 2010/11/02 · arxiv updated 2015/05/14 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Negative-mass phenomena occurring below a cut-off frequency are examined using both theoretical and experimental methods. The paper begins with an investigation of a mass–spring structure, the effective mass of which is shown to be negative below a specific frequency. Due to the decaying nature of lattice waves in the negative-mass system, the transmission drop induced by negative effective mass is demonstrated experimentally. Further investigation is conducted for a rectangular solid waveguide with clamped boundary conditions. It is shown that the lowest bandgap mode of the clamped waveguide can be attributed to negative effective mass below a cut-off frequency. Based on this observation, elastic metamaterials made of a steel grid filled with styrene butadiene rubber are designed and fabricated. Both the simulation and experimental analyses demonstrate that the designed metamaterials have negative effective mass below a cut-off frequency.