Superlensing effect of an anisotropic metamaterial slab with near-zero dynamic mass

@article{Zhou2011SuperlensingEO,
  title={Superlensing effect of an anisotropic metamaterial slab with near-zero dynamic mass},
  author={Xiaoming Zhou and Gengkai Hu},
  journal={Applied Physics Letters},
  year={2011},
  volume={98},
  pages={263510}
}
A metamaterial slab of anisotropic mass with one diagonal component being infinity and the other being zero is demonstrated to behave as a superlens for acoustic imaging beyond the diffraction limit. The underlying mechanism for extraordinary transmission of evanescent waves is attributed to the zero mass effect. Microstructure design for such anisotropic lens is also presented. In contrast to the anisotropic superlens based on Fabry-Perot resonant mechanism, the proposed lens operates without… Expand

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References

SHOWING 1-10 OF 11 REFERENCES
Theoretical study of subwavelength imaging by acoustic metamaterial slabs
We investigate theoretically subwavelength imaging by acoustic metamaterial slabs immersed in the liquid matrix. A near-field subwavelength image formed by evanescent waves is achieved by a designedExpand
Focusing ultrasound with an acoustic metamaterial network.
TLDR
The first experimental demonstration of focusing ultrasound waves through a flat acoustic metamaterial lens composed of a planar network of subwavelength Helmholtz resonators is presented, showing the promise of designing compact and lightweight ultrasound imaging elements. Expand
Surface resonant states and superlensing in acoustic metamaterials
We report that the negative material responses of acoustic metamaterials can lead to a plethora of surface resonant states. We determine that negative effective-mass density is the necessaryExpand
Parallel acoustic near-field microscope: A steel slab with a periodic array of slits.
TLDR
A practical acoustic near-field microscope is proposed, which is simply a steel slab with periodic array of subwavelength slits with theoretically derived transmission coefficients of the structured slab as a function of the transverse wave vector, and a theoretical model is employed to study the imaging of the proposed device. Expand
Negative refraction makes a perfect lens
  • Pendry
  • Physics, Medicine
  • Physical review letters
  • 2000
TLDR
The authors' simulations show that a version of the lens operating at the frequency of visible light can be realized in the form of a thin slab of silver, which resolves objects only a few nanometers across. Expand
Tunneling of electromagnetic energy through subwavelength channels and bends using epsilon-near-zero materials.
TLDR
It is demonstrated theoretically that electromagnetic waves can be "squeezed" and tunneled through very narrow channels filled with epsilon-near-zero (ENZ) materials and it is discussed that in some cases the isotropy of the ENZ material may not be an issue. Expand
Acoustic metamaterials for sound focusing and confinement
We give a theoretical design for a locally resonant two-dimensional cylindrical structure involving a pair of C-shaped voids in an elastic medium which we term as double 'C' resonators (DCRs) andExpand
A holey-structured metamaterial for acoustic deep-subwavelength imaging
A three-dimensional periodic structure focuses acoustic waves to a spot size that is one fiftieth of the wavelength—beating the classical diffraction limit by a long way. The device could lead toExpand
Investigation of the negative-mass behaviors occurring below a cut-off frequency
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, theExpand
Experimental study on negative effective mass in a 1D mass–spring system
A mass–spring system with negative effective mass is experimentally realized, and its transmission property is examined in the low-frequency range. The local resonance of the basic unit is observedExpand
...
1
2
...