Thermal nonreciprocity tuned by wrinkle patterns in graphene
Thermal nonreciprocity are typically realized by using nonlinear heat conductivity, external field bias or spatiotemporal modulation of thermal parameters, but these methods require specific material properties or accurate modulation means. Low-dimensional materials like graphene provides a platform...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2024-01-01
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| Series: | New Journal of Physics |
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| Online Access: | https://doi.org/10.1088/1367-2630/ad91da |
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| author | Bohan Li Qingxiang Ji Qi Zhang Changguo Wang Muamer Kadic |
| author_facet | Bohan Li Qingxiang Ji Qi Zhang Changguo Wang Muamer Kadic |
| author_sort | Bohan Li |
| collection | DOAJ |
| description | Thermal nonreciprocity are typically realized by using nonlinear heat conductivity, external field bias or spatiotemporal modulation of thermal parameters, but these methods require specific material properties or accurate modulation means. Low-dimensional materials like graphene provides a platform to engineer heat transport characteristics at the molecular level. Here, by simply tuning graphene’s wrinkle morphology, the approach to generate nonreciprocal heat transfer is reported, which applies to both static and dynamic heat signals. Such nonreciprocity is attributed to the tunable responses of thermal conductivity on both temperatures and wrinkles. Phonon density of states of the wrinkled graphene exhibit distinct spectra, especially at the low frequency (around $17~\mathrm{THz}$ ), which results in reduced temperature-sensitivity of thermal conductivities and eventually induces thermal nonreciprocity. The findings provide insights into the physics of thermal transport in wrinkled graphene, and paves a new avenue for mechanically modulating thermal nonreciprocity. Our method to obtain thermal nonreciprocity is reversible, tunable and controllable, meanwhile remains structural integrity, which benefits functional applications such as heat management in electronics. |
| format | Article |
| id | doaj-art-e80ffa13a1604844aa1eff0569cfaa14 |
| institution | OA Journals |
| issn | 1367-2630 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj-art-e80ffa13a1604844aa1eff0569cfaa142025-08-20T02:07:12ZengIOP PublishingNew Journal of Physics1367-26302024-01-01261111302010.1088/1367-2630/ad91daThermal nonreciprocity tuned by wrinkle patterns in grapheneBohan Li0Qingxiang Ji1Qi Zhang2https://orcid.org/0009-0002-5482-7479Changguo Wang3https://orcid.org/0000-0002-7646-6793Muamer Kadic4https://orcid.org/0000-0002-4692-5696National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology , Harbin 150001, People’s Republic of ChinaNational Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology , Harbin 150001, People’s Republic of China; Université de Franche-Comté , Institut FEMTO-ST, CNRS, 25000 Besançon, FranceNational Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology , Harbin 150001, People’s Republic of ChinaNational Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology , Harbin 150001, People’s Republic of ChinaUniversité de Franche-Comté , Institut FEMTO-ST, CNRS, 25000 Besançon, FranceThermal nonreciprocity are typically realized by using nonlinear heat conductivity, external field bias or spatiotemporal modulation of thermal parameters, but these methods require specific material properties or accurate modulation means. Low-dimensional materials like graphene provides a platform to engineer heat transport characteristics at the molecular level. Here, by simply tuning graphene’s wrinkle morphology, the approach to generate nonreciprocal heat transfer is reported, which applies to both static and dynamic heat signals. Such nonreciprocity is attributed to the tunable responses of thermal conductivity on both temperatures and wrinkles. Phonon density of states of the wrinkled graphene exhibit distinct spectra, especially at the low frequency (around $17~\mathrm{THz}$ ), which results in reduced temperature-sensitivity of thermal conductivities and eventually induces thermal nonreciprocity. The findings provide insights into the physics of thermal transport in wrinkled graphene, and paves a new avenue for mechanically modulating thermal nonreciprocity. Our method to obtain thermal nonreciprocity is reversible, tunable and controllable, meanwhile remains structural integrity, which benefits functional applications such as heat management in electronics.https://doi.org/10.1088/1367-2630/ad91dathermal nonreciprocity, wrinkle, thermal conductivity, graphene, phonon density of states |
| spellingShingle | Bohan Li Qingxiang Ji Qi Zhang Changguo Wang Muamer Kadic Thermal nonreciprocity tuned by wrinkle patterns in graphene New Journal of Physics thermal nonreciprocity, wrinkle, thermal conductivity, graphene, phonon density of states |
| title | Thermal nonreciprocity tuned by wrinkle patterns in graphene |
| title_full | Thermal nonreciprocity tuned by wrinkle patterns in graphene |
| title_fullStr | Thermal nonreciprocity tuned by wrinkle patterns in graphene |
| title_full_unstemmed | Thermal nonreciprocity tuned by wrinkle patterns in graphene |
| title_short | Thermal nonreciprocity tuned by wrinkle patterns in graphene |
| title_sort | thermal nonreciprocity tuned by wrinkle patterns in graphene |
| topic | thermal nonreciprocity, wrinkle, thermal conductivity, graphene, phonon density of states |
| url | https://doi.org/10.1088/1367-2630/ad91da |
| work_keys_str_mv | AT bohanli thermalnonreciprocitytunedbywrinklepatternsingraphene AT qingxiangji thermalnonreciprocitytunedbywrinklepatternsingraphene AT qizhang thermalnonreciprocitytunedbywrinklepatternsingraphene AT changguowang thermalnonreciprocitytunedbywrinklepatternsingraphene AT muamerkadic thermalnonreciprocitytunedbywrinklepatternsingraphene |