Independent Manipulation of Heat and Electrical Current via Bifunctional Metamaterials

Abstract

Spatial tailoring of the material constitutive properties is a well-known strategy to mold the local flow of given observables in different physical domains. Coordinate-transformation-based methods (e.g., transformation optics) offer a powerful and systematic approach to design anisotropic, spatially-inhomogeneous artificial materials ("metamaterials") capable of precisely manipulating wave-based (electromagnetic, acoustic, elastic) as well as diffusion-based (heat) phenomena in a desired fashion. However versatile these approaches have been, most designs have so far been limited to serving single-target functionalities in a given physical domain. Here we present a step towards a "transformation multiphysics" framework that allows independent and simultaneous manipulation of multiple physical phenomena. As a proof of principle of this new scheme, we design and synthesize (in terms of realistic material constituents) a metamaterial shell that simultaneously behaves as a thermal concentrator and an electrical "invisibility cloak". Our numerical results open up intriguing possibilities in the largely unexplored phase space of multi-functional metadevices, with a wide variety of potential applications to electrical, magnetic, acoustic, and thermal scenarios.

31 pages, 7 figures, 2 tables

References in corpus (4)

• Acoustic cloaking theory
• Achieving control of in-plane elastic waves
• A DC magnetic metamaterial
• Hyperelastic cloaking theory: Transformation elasticity with pre-stressed solids

Cited by in corpus (10)

• Transforming heat transfer with thermal metamaterials and devices
• Experimental demonstration of a multiphysics cloak: manipulating heat flux and electric current simultaneously
• Controlling mass and energy diffusion with metamaterials
• Simultaneously realizing thermal and electromagnetic cloaking by multi-physical null medium
• Reconfigurable anisotropy and functional transformations with VO${}_2$-based metamaterial electric circuits
• Independent Manipulation of Electric and Thermal Fields with Bilayer Structure
• Simultaneous Manipulation of Electric and Thermal Fields via Combination of Passive and Active Schemes
• Concentrating Electric and Thermal Fields Simultaneously Using Fan-shaped Structure
• Fluid-loaded metasurfaces
• Transformation-Optics-Based Design of a Metamaterial Radome for Extending the Scanning Angle of a Phased Array Antenna