Tunable negative permeability in an isotropic dielectric composite

A tunable isotropic negative effective permeability is experimentally demonstrated in a three-dimensional (3D) dielectric composite consisting of dielectric ceramic cube arrays by temperature changing. It shows that a strong subwavelength magnetic resonance can be excited in dielectric cubes corresponding to the first Mie resonance mode and can be continuously and reversibly adjusted from 13.65to19.28GHz with the temperature changing from −15to35°C. Accordingly, negative permeability can be performed in the frequency range of about 6GHz by adjusting the temperature. It provides a convenient route to design adaptive metamaterials and 3D invisible cloak.

[1]  Lixin Ran,et al.  Experimental observation of left-handed behavior in an array of standard dielectric resonators. , 2007, Physical review letters.

[2]  Xiao Liang,et al.  Electrically tunable negative permeability metamaterials based on nematic liquid crystals , 2007 .

[3]  David R. Smith,et al.  Metamaterial Electromagnetic Cloak at Microwave Frequencies , 2006, Science.

[4]  Lixin Ran,et al.  Controllable left-handed metamaterial and its application to a steerable antenna , 2006 .

[5]  M. Wegener,et al.  Low-loss negative-index metamaterial at telecommunication wavelengths. , 2006, Optics letters.

[6]  Willie J Padilla,et al.  Dynamical electric and magnetic metamaterial response at terahertz frequencies , 2006, 2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference.

[7]  J. Stewart Aitchison,et al.  Coated nonmagnetic spheres with a negative index of refraction at infrared frequencies , 2006 .

[8]  J. Stewart Aitchison,et al.  Three-dimensional array of dielectric spheres with an isotropic negative permeability at infrared frequencies , 2005 .

[9]  W. Wen,et al.  Tuning of photonic bandgaps by a field-induced structural change of fractal metamaterials. , 2005, Optics express.

[10]  A. Moroz,et al.  Negative refractive index metamaterials from inherently non-magnetic materials for deep infrared to terahertz frequency ranges , 2005, Journal of physics. Condensed matter : an Institute of Physics journal.

[11]  L. Zschiedrich,et al.  Magnetic metamaterials at telecommunication and visible frequencies. , 2005, Physical review letters.

[12]  U. Chettiar,et al.  Negative index of refraction in optical metamaterials. , 2005, Optics letters.

[13]  Jin Au Kong,et al.  Robust method to retrieve the constitutive effective parameters of metamaterials. , 2004, Physical review. E, Statistical, nonlinear, and soft matter physics.

[14]  Michelle L. Povinelli,et al.  Negative effective permeability in polaritonic photonic crystals , 2004 .

[15]  Jiangtao Huangfu,et al.  Experimental confirmation of negative refractive index of a metamaterial composed of Ω-like metallic patterns , 2004 .

[16]  C. Holloway,et al.  A double negative (DNG) composite medium composed of magnetodielectric spherical particles embedded in a matrix , 2003 .

[17]  I. Chuang,et al.  Experimental observations of a left-handed material that obeys Snell's law. , 2003, Physical review letters.

[18]  J. Pendry,et al.  Photonic band-gap effects and magnetic activity in dielectric composites , 2002 .

[19]  R. Shelby,et al.  Experimental Verification of a Negative Index of Refraction , 2001, Science.

[20]  J. Pendry,et al.  Negative refraction makes a perfect lens , 2000, Physical review letters.

[21]  Zhigang Suo,et al.  The effect of stress on the dielectric properties of barium strontium titanate thin films , 1999 .

[22]  Joaquin Mollá,et al.  Effect of humidity on microwave dielectric losses of porous alumina , 1999 .

[23]  O. Vendik,et al.  Modeling the dielectric response of incipient ferroelectrics , 1997 .