Experimental Demonstration of a Multiphysics Cloak: Manipulating Heat Flux and Electric Current Simultaneously

Yungui Ma, Yichao Liu, Muhammad Raza, Yudong Wang, and Sailing He
Phys. Rev. Lett. 113, 205501 – Published 12 November 2014
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Abstract

Invisible cloaks have been widely explored in many different physical systems but usually for a single phenomenon for one device. In this Letter we make an experimental attempt to show a multidisciplinary framework that has the capability to simultaneously respond to two different physical excitations according to predetermined scenarios. As a proof of concept, we implement an electric-thermal bifunctional device that can guide both electric current and heat flux “across” a strong ‘scatterer’ (air cavity) and restore their original diffusion directions as if nothing exists along the paths, thus rendering dual cloaking effects for objects placed inside the cavity. This bifunctional cloaking performance is also numerically verified for a line-source nonuniform excitation. Our results and the fabrication technique presented here will help broaden the current research scope for multiple disciplines and may pave a way to manipulate multiple flows and create new functional devices, e.g., for on-chip applications.

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  • Received 27 May 2014

DOI:https://doi.org/10.1103/PhysRevLett.113.205501

© 2014 American Physical Society

Authors & Affiliations

Yungui Ma1,*, Yichao Liu1, Muhammad Raza1, Yudong Wang1, and Sailing He1,2,†

  • 1State Key Lab of Modern Optical Instrumentation, Centre for Optical and Electromagnetic Research, Department of Optical Engineering, Zhejiang University, Hangzhou 310058, China
  • 2Department of Electromagnetic Engineering, School of Electrical Engineering, Royal Institute of Technology, S-100 44 Stockholm, Sweden

  • *Corresponding author. yungui@zju.edu.cn
  • Corresponding author. sailing@kth.se

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Issue

Vol. 113, Iss. 20 — 14 November 2014

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