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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202202257
|2 doi
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|a eng
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| 100 |
1 |
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|a Hu, Hao
|e verfasserin
|4 aut
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|a Observation of Topological Edge States in Thermal Diffusion
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|c 2022
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Revised 05.08.2022
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2022 The Authors. Advanced Materials published by Wiley-VCH GmbH.
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|a Topological band theory predicts that bulk materials with nontrivial topological phases support topological edge states. This phenomenon is universal for various wave systems and is widely observed for electromagnetic and acoustic waves. Here, the notion of band topology is extended from wave to diffusion dynamics. Unlike wave systems that are usually Hermitian, diffusion systems are anti-Hermitian with purely imaginary eigenvalues corresponding to decay rates. By direct probe of the temperature diffusion, the Hamiltonian of a thermal lattice is experimentally retrieved, and the emergence of topological edge decays is observed within the gap of bulk decays. The results of this work show that such edge states exhibit robust decay rates, which are topologically protected against disorder. This work constitutes a thermal analogue of topological insulators and paves the way to exploring defect-immune heat dissipation
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|a Journal Article
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|a thermal diffusion
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|a thermal functional materials
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| 650 |
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|a topological insulators
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| 700 |
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|a Han, Song
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yang, Yihao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Dongjue
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Xue, Haoran
|e verfasserin
|4 aut
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| 700 |
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|a Liu, Gui-Geng
|e verfasserin
|4 aut
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| 700 |
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|a Cheng, Zheyu
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Qi Jie
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Shuang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Baile
|e verfasserin
|4 aut
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| 700 |
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|a Luo, Yu
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 34(2022), 31 vom: 28. Aug., Seite e2202257
|w (DE-627)NLM098206397
|x 1521-4095
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|g volume:34
|g year:2022
|g number:31
|g day:28
|g month:08
|g pages:e2202257
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|u http://dx.doi.org/10.1002/adma.202202257
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