Macroscopic negative differential thermal resistance in the overlapping graphene homojunction structure
Summary: As one of the most potential ways to manipulate heat, thermal functional devices have achieved several breakthroughs in recent years, but are still limited to theoretical simulations. One of its theoretical bases is the existence of the negative differential thermal resistance (NDTR). Howev...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-08-01
|
| Series: | iScience |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589004223015705 |
| _version_ | 1797752941236453376 |
|---|---|
| author | Rui Wu He Tian Zhengqiang Zhu Yanming Liu Chao-Yang Xing Gang Zhang Tian-Ling Ren |
| author_facet | Rui Wu He Tian Zhengqiang Zhu Yanming Liu Chao-Yang Xing Gang Zhang Tian-Ling Ren |
| author_sort | Rui Wu |
| collection | DOAJ |
| description | Summary: As one of the most potential ways to manipulate heat, thermal functional devices have achieved several breakthroughs in recent years, but are still limited to theoretical simulations. One of its theoretical bases is the existence of the negative differential thermal resistance (NDTR). However, most of the existing systems where the phenomenon of NDTR is found are atomic-level systems. In order to realize the macroscopic NDTR and provide effective theoretical guidance and support for the practical realization of thermal functional devices, we construct the overlapping graphene homojunction model, using the negative thermal expansion property of graphene to modify the overlapping area, and thus regulating the heat flow. The COMSOL-MATLAB co-simulation is used to perform calculations through negative feedback loops. It is found that the NDTR phenomenon exists under certain parameter conditions, which can provide new ideas and bring more opportunities for the experimental realization of nonlinear thermal functional devices. |
| first_indexed | 2024-03-12T17:11:20Z |
| format | Article |
| id | doaj.art-7b5c3f62a42246f2b55c6b2fcb450573 |
| institution | Directory Open Access Journal |
| issn | 2589-0042 |
| language | English |
| last_indexed | 2024-03-12T17:11:20Z |
| publishDate | 2023-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | iScience |
| spelling | doaj.art-7b5c3f62a42246f2b55c6b2fcb4505732023-08-06T04:38:02ZengElsevieriScience2589-00422023-08-01268107493Macroscopic negative differential thermal resistance in the overlapping graphene homojunction structureRui Wu0He Tian1Zhengqiang Zhu2Yanming Liu3Chao-Yang Xing4Gang Zhang5Tian-Ling Ren6School of Integrated Circuit and the Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, ChinaSchool of Integrated Circuit and the Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China; Corresponding authorSchool of Integrated Circuit and the Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China; Beijing Institute of Aerospace Control Devices, Beijing 100094, ChinaSchool of Integrated Circuit and the Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China; Beijing Institute of Aerospace Control Devices, Beijing 100094, ChinaBeijing Institute of Aerospace Control Devices, Beijing 100094, ChinaInstitute of High Performance Computing, A∗STAR, Singapore 138632, Singapore; Corresponding authorSchool of Integrated Circuit and the Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China; Corresponding authorSummary: As one of the most potential ways to manipulate heat, thermal functional devices have achieved several breakthroughs in recent years, but are still limited to theoretical simulations. One of its theoretical bases is the existence of the negative differential thermal resistance (NDTR). However, most of the existing systems where the phenomenon of NDTR is found are atomic-level systems. In order to realize the macroscopic NDTR and provide effective theoretical guidance and support for the practical realization of thermal functional devices, we construct the overlapping graphene homojunction model, using the negative thermal expansion property of graphene to modify the overlapping area, and thus regulating the heat flow. The COMSOL-MATLAB co-simulation is used to perform calculations through negative feedback loops. It is found that the NDTR phenomenon exists under certain parameter conditions, which can provide new ideas and bring more opportunities for the experimental realization of nonlinear thermal functional devices.http://www.sciencedirect.com/science/article/pii/S2589004223015705Applied sciencesDevicesThermal property |
| spellingShingle | Rui Wu He Tian Zhengqiang Zhu Yanming Liu Chao-Yang Xing Gang Zhang Tian-Ling Ren Macroscopic negative differential thermal resistance in the overlapping graphene homojunction structure iScience Applied sciences Devices Thermal property |
| title | Macroscopic negative differential thermal resistance in the overlapping graphene homojunction structure |
| title_full | Macroscopic negative differential thermal resistance in the overlapping graphene homojunction structure |
| title_fullStr | Macroscopic negative differential thermal resistance in the overlapping graphene homojunction structure |
| title_full_unstemmed | Macroscopic negative differential thermal resistance in the overlapping graphene homojunction structure |
| title_short | Macroscopic negative differential thermal resistance in the overlapping graphene homojunction structure |
| title_sort | macroscopic negative differential thermal resistance in the overlapping graphene homojunction structure |
| topic | Applied sciences Devices Thermal property |
| url | http://www.sciencedirect.com/science/article/pii/S2589004223015705 |
| work_keys_str_mv | AT ruiwu macroscopicnegativedifferentialthermalresistanceintheoverlappinggraphenehomojunctionstructure AT hetian macroscopicnegativedifferentialthermalresistanceintheoverlappinggraphenehomojunctionstructure AT zhengqiangzhu macroscopicnegativedifferentialthermalresistanceintheoverlappinggraphenehomojunctionstructure AT yanmingliu macroscopicnegativedifferentialthermalresistanceintheoverlappinggraphenehomojunctionstructure AT chaoyangxing macroscopicnegativedifferentialthermalresistanceintheoverlappinggraphenehomojunctionstructure AT gangzhang macroscopicnegativedifferentialthermalresistanceintheoverlappinggraphenehomojunctionstructure AT tianlingren macroscopicnegativedifferentialthermalresistanceintheoverlappinggraphenehomojunctionstructure |