Advanced thermal metamaterial design for temperature control at the cloaked region

Muhammad Imran,Asit Kumar Gain,Liangchi Zhang

doi:10.1038/s41598-020-68481-6

Muhammad Imran, Asit Kumar Gain + Show 1 more

Open Access

https://doi.org/10.1038/s41598-020-68481-6

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Abstract

The present study focuses on maintaining the temperature magnitude around heat-sensitive components (cloaked region) in advanced electronic devices by introducing convective elements using extended surface fins. A finite element analysis confirmed that with the aid of the convection component to thermal cloaking, heat flux can be redirected around the cloaked region as well as control the temperature. The simulation results were verified by experiment under natural convection corresponding to the simulation assumptions. It was found that when the heat source maintains its temperature at 100 °C and the heat sink remains at 0 °C, the temperature within the cloaked region can reduce by up to 15 °C, from ~ 50 °C with conventional cloaking to 35 °C with a well-designed array of surface fins. It is worth noting that experimental results are consistent with the simulation results.

Highlights

The present study focuses on maintaining the temperature magnitude around heat-sensitive components in advanced electronic devices by introducing convective elements using extended surface fins
The advent of the transformation thermodynamics opened the avenues to mimic the concepts of transformation optics (TO) into thermal domain
The mechanism of thermal cloaking involves redirecting the heat flow around the cloaked region due to transformed thermal conductivity as if nothing was placed in the cloaked region[1]

Summary

Introduction

The present study focuses on maintaining the temperature magnitude around heat-sensitive components (cloaked region) in advanced electronic devices by introducing convective elements using extended surface fins. An array of passive cooling mechanism, e.g., surface fins, is introduced to enhance the heat flow via convection and to maintain a lower temperature in the cloaked region. The convectional thermal cloaking only redirects the heat flow without reducing the temperature at the cloaked region.

Results

Conclusion