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Abstract
Fourier's law dictates that heat flows from warm to cold. Nevertheless, devices can be tailored to cloak obstacles or even reverse the heat flow. Mathematical transformation yields closed-form equations for graded, highly anisotropic thermal metamaterial distributions needed for obtaining such functionalities. For simple geometries, devices can be realized by regular conductor distributions; however, for complex geometries, physical realizations have so far been challenging, and sub-optimal solutions have been obtained by expensive numerical approaches. Here we suggest a straightforward and highly efficient analytical de-homogenization approach that uses optimal multi-rank laminates to provide closed-form solutions for any imaginable thermal manipulation device. We create thermal cloaks, rotators, and concentrators in complex domains with close-to-optimal performance and esthetic elegance. The devices are fabricated using metal 3D printing, and their omnidirectional thermal functionalities are investigated numerically and validated experimentally. The analytical approach enables next-generation free-form thermal meta-devices with efficient synthesis, near-optimal performance, and concise patterns.
Original language | English |
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Article number | 5527 |
Journal | Nature Communications |
Volume | 15 |
Issue number | 1 |
Number of pages | 10 |
ISSN | 2041-1723 |
DOIs | |
Publication status | Published - 2024 |
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Dive into the research topics of 'Analytical realization of complex thermal meta-devices'. Together they form a unique fingerprint.Projects
- 1 Finished
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InnoTop: InnoTop, Interactive, Non-Linear, High-Resolution Topology Optimization
Sigmund, O. (Project Coordinator), Petersen, M. L. (Project Manager), Carlberg, L. K. (Project Manager), Aage, N. (Project Participant), Andreasen, C. S. (Project Participant), Wang, F. (Project Participant), Bærentzen, J. A. (Project Participant) & Assentoft, D. (Project Manager)
01/09/2017 → 31/08/2024
Project: Research