Band structures tunability of bulk 2D phononic crystals made of magneto-elastic materials
نویسندگان
چکیده
منابع مشابه
Tailoring of phononic band structures in colloidal crystals.
We report an experimental study of the elastic properties of a two-dimensional (2D) colloidal crystal subjected to light-induced substrate potentials. In agreement with recent theoretical predictions [H. H. von Grünberg and J. Baumgartl, Phys. Rev. E 75, 051406 (2007).10.1103/PhysRevE.75.051406] the phonon band structure of such systems can be tuned depending on the symmetry and depth of the su...
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In this paper, a two-dimensional phononic crystal comprising of steel rod in water is investigated. Three cross- sections for this rod are considered using finite element method (EFM). We plot the equifrequency surface of the first band, because of equifrequency surface convex around the edge of the first Brillouin Zone, we guess the negative effective phononic mass and so negative refraction. ...
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1. Abstract: Phononic band gap crystals, which could prohibit the propagations of elastic waves in certain frequency, are consisted of periodically distributed inclusions embedded in a matrix with high contrast in mechanical properties. In recent years, systematic design of phononic band gap crystals has attracted increasing attention due to their wide applications such as sound insulation, wav...
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1 College of Mechanics and Materials, Hohai University, Nanjing 210098, China; [email protected] (Y.Z.); [email protected] (L.-H.J.) 2 College of Civil Engineering, Tongji University, Shanghai 200092, China; [email protected] 3 College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China; [email protected] * Correspondence: [email protected]; Fax: +86-...
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A generalized theory of elasticity, taking into account the rotational degrees of freedom of point bodies constituting a continuum, was proposed at the beginning of the twentieth century by the Cosserat brothers. We report the experimental observation of coupled rotational-translational modes in a noncohesive granular phononic crystal. While absent in the classical theory of elasticity, these e...
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ژورنال
عنوان ژورنال: AIP Advances
سال: 2011
ISSN: 2158-3226
DOI: 10.1063/1.3676172