Transformation-Based Flexible Thermal Hose with Homogeneous Conductors in Bilayer Configurations

Thermal hose is capable of transferring the thermal energy of a finite source to arbitrary long distance. This is achieved by using stretching transformation and can be ideally constructed by using a material with a highly anisotropic thermal conductivity. For practical realization, such a thermal hose can be made of homogeneous conductors in bilayer configurations, employing only copper and expanded polystyrene. It is shown that the thermal energy can be well confined and almost perfectly transferred in an arbitrarily bending hose, demonstrating excellent flexibility. More interestingly is that when a point heat source is placed at the opening of a split-ring-shaped hose, the temperature of the inner region becomes uniform and reaches nearly as high as the heat source. These novel properties of the proposed flexible thermal hose have been numerically validated in time-dependent case, showing excellent transfer and configuration of thermal energy.

[1]  Baowen Li,et al.  Experimental demonstration of a bilayer thermal cloak. , 2014, Physical review letters.

[2]  Jian-Shiuh Chen,et al.  Cloak for curvilinearly anisotropic media in conduction , 2008 .

[3]  Zhaowei Liu,et al.  Far-Field Optical Hyperlens Magnifying Sub-Diffraction-Limited Objects , 2007, Science.

[4]  J I Cirac,et al.  Long-distance transfer and routing of static magnetic fields. , 2013, Physical review letters.

[5]  Superconductivity in iron compounds , 2011, 1106.1618.

[6]  Claude Amra,et al.  Transformation thermodynamics: cloaking and concentrating heat flux. , 2012, Optics express.

[7]  Chunguang Xia,et al.  Broadband acoustic cloak for ultrasound waves. , 2010, Physical review letters.

[8]  Huanyang Chen,et al.  Design and experimental realization of a broadband transformation media field rotator at microwave frequencies. , 2009, Physical review letters.

[9]  Cheng-Wei Qiu,et al.  Homogeneous Thermal Cloak with Constant Conductivity and Tunable Heat Localization , 2013, Scientific Reports.

[10]  David R. Smith,et al.  A full-parameter unidirectional metamaterial cloak for microwaves. , 2013, Nature materials.

[11]  Alexander B. Movchan,et al.  Achieving control of in-plane elastic waves , 2008, 0812.0912.

[12]  Tsuyoshi Nomura,et al.  Heat flux cloaking, focusing, and reversal in ultra-thin composites considering conduction-convection effects , 2013 .

[13]  Huanyang Chen,et al.  Acoustic cloaking in three dimensions using acoustic metamaterials , 2007 .

[14]  Fedor Gömöry,et al.  Experimental Realization of a Magnetic Cloak , 2012, Science.

[15]  Jiping Huang,et al.  A bifunctional cloak using transformation media , 2010 .

[16]  M. Wegener,et al.  Experiments on transformation thermodynamics: molding the flow of heat. , 2012, Physical review letters.

[17]  H. Onnes.  Further experiments with Liquid Helium G. On the electrical resistance of Pure Metals etc. VI. On the Sudden Change in the Rate at which the Resistance of Mercury Disappears , 1991 .

[18]  Yuki Sato,et al.  DC Magnetic Cloak , 2012, Advanced materials.

[19]  Fei Gao,et al.  Ultrathin three-dimensional thermal cloak. , 2014, Physical review letters.

[20]  Baowen Li,et al.  Manipulating Steady Heat Conduction by Sensu-shaped Thermal Metamaterials , 2015, Scientific reports.

[21]  Jiping Huang,et al.  Shaped graded materials with an apparent negative thermal conductivity , 2008 .

[22]  Wei Jiang,et al.  A transient thermal cloak experimentally realized through a rescaled diffusion equation with anisotropic thermal diffusivity , 2013 .

[23]  Jordi Prat-Camps,et al.  A Magnetic Wormhole , 2015, Scientific Reports.

[24]  Mathias Noe,et al.  Electric power applications of superconductivity , 2004, Proceedings of the IEEE.

[25]  J. Pendry,et al.  Three-Dimensional Invisibility Cloak at Optical Wavelengths , 2010, Science.

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

[27]  David R. Smith,et al.  Controlling Electromagnetic Fields , 2006, Science.

[28]  J. Willis,et al.  On cloaking for elasticity and physical equations with a transformation invariant form , 2006 .

[29]  Shuang Zhang,et al.  Cloaking of matter waves. , 2008, Physical review letters.

[30]  Li Hu,et al.  Spherical cloaking with homogeneous isotropic multilayered structures. , 2009, Physical review. E, Statistical, nonlinear, and soft matter physics.

[31]  T. Cui,et al.  Three-dimensional broadband ground-plane cloak made of metamaterials , 2010, Nature communications.

[32]  Baile Zhang,et al.  Active thermal cloak , 2015 .

[33]  Yuki Sato,et al.  Heat flux manipulation with engineered thermal materials. , 2012, Physical review letters.

[34]  G. Uhlmann,et al.  Isotropic transformation optics: approximate acoustic and quantum cloaking , 2008, 0806.0085.

[35]  Fan Yang,et al.  dc electric invisibility cloak. , 2012, Physical review letters.