Design and Thermal Analysis of Flexible Microheaters
With the development of flexible electronics, flexible microheaters have been applied in many areas. Low power consumption and fast response microheaters have attracted much attention. In this work, systematic thermal and mechanical analyses were conducted for a kind of flexible microheater with two...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-06-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/13/7/1037 |
| _version_ | 1797433335661723648 |
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| author | Dezhao Li Yangtao Ruan Chuangang Chen Wenfeng He Cheng Chi Qiang Lin |
| author_facet | Dezhao Li Yangtao Ruan Chuangang Chen Wenfeng He Cheng Chi Qiang Lin |
| author_sort | Dezhao Li |
| collection | DOAJ |
| description | With the development of flexible electronics, flexible microheaters have been applied in many areas. Low power consumption and fast response microheaters have attracted much attention. In this work, systematic thermal and mechanical analyses were conducted for a kind of flexible microheater with two different wire structures. The microheater consisted of polyethylene terephthalate (PET) substrate and copper electric wire with graphene thin film as the middle layer. The steady-state average temperature and heating efficiency for the two structures were compared and it was shown that the S-shaped wire structure was better for voltage-controlled microheater other than circular-shaped structure. In addition, the maximum thermal stress for both structures was from the boundary of microheaters, which indicated that not only the wire structure but also the shape of micro heaters should be considered to reduce the damage caused by thermal stress. The influence resulting from the thickness of graphene thin film also has been discussed. In all, the heating efficiency for flexible microheaters can be up to 135 °C/W. With the proposed PID voltage control system, the response time for the designed microheater was less than 10 s. Moreover, a feasible fabrication process flow for these proposed structures combing thermal analysis results in this work can provide some clues for flexible microheaters design and fabrication in other application areas. |
| first_indexed | 2024-03-09T10:15:35Z |
| format | Article |
| id | doaj.art-9e1c1743334e49ecbd1e04e758adb03f |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-03-09T10:15:35Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-9e1c1743334e49ecbd1e04e758adb03f2023-12-01T22:27:20ZengMDPI AGMicromachines2072-666X2022-06-01137103710.3390/mi13071037Design and Thermal Analysis of Flexible MicroheatersDezhao Li0Yangtao Ruan1Chuangang Chen2Wenfeng He3Cheng Chi4Qiang Lin5Zhejiang Provincial Key Laboratory of Quantum Precision Measurement, Collaborative Innovation Center for Information Technology in Biological and Medical Physics, College of Science, Zhejiang University of Technology, Hangzhou 310023, ChinaZhejiang Provincial Key Laboratory of Quantum Precision Measurement, Collaborative Innovation Center for Information Technology in Biological and Medical Physics, College of Science, Zhejiang University of Technology, Hangzhou 310023, ChinaZhejiang Provincial Key Laboratory of Quantum Precision Measurement, Collaborative Innovation Center for Information Technology in Biological and Medical Physics, College of Science, Zhejiang University of Technology, Hangzhou 310023, ChinaZhejiang Provincial Key Laboratory of Quantum Precision Measurement, Collaborative Innovation Center for Information Technology in Biological and Medical Physics, College of Science, Zhejiang University of Technology, Hangzhou 310023, ChinaKey Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, ChinaZhejiang Provincial Key Laboratory of Quantum Precision Measurement, Collaborative Innovation Center for Information Technology in Biological and Medical Physics, College of Science, Zhejiang University of Technology, Hangzhou 310023, ChinaWith the development of flexible electronics, flexible microheaters have been applied in many areas. Low power consumption and fast response microheaters have attracted much attention. In this work, systematic thermal and mechanical analyses were conducted for a kind of flexible microheater with two different wire structures. The microheater consisted of polyethylene terephthalate (PET) substrate and copper electric wire with graphene thin film as the middle layer. The steady-state average temperature and heating efficiency for the two structures were compared and it was shown that the S-shaped wire structure was better for voltage-controlled microheater other than circular-shaped structure. In addition, the maximum thermal stress for both structures was from the boundary of microheaters, which indicated that not only the wire structure but also the shape of micro heaters should be considered to reduce the damage caused by thermal stress. The influence resulting from the thickness of graphene thin film also has been discussed. In all, the heating efficiency for flexible microheaters can be up to 135 °C/W. With the proposed PID voltage control system, the response time for the designed microheater was less than 10 s. Moreover, a feasible fabrication process flow for these proposed structures combing thermal analysis results in this work can provide some clues for flexible microheaters design and fabrication in other application areas.https://www.mdpi.com/2072-666X/13/7/1037microheaterheating wire structurePID controlgraphene thin filmfast response |
| spellingShingle | Dezhao Li Yangtao Ruan Chuangang Chen Wenfeng He Cheng Chi Qiang Lin Design and Thermal Analysis of Flexible Microheaters Micromachines microheater heating wire structure PID control graphene thin film fast response |
| title | Design and Thermal Analysis of Flexible Microheaters |
| title_full | Design and Thermal Analysis of Flexible Microheaters |
| title_fullStr | Design and Thermal Analysis of Flexible Microheaters |
| title_full_unstemmed | Design and Thermal Analysis of Flexible Microheaters |
| title_short | Design and Thermal Analysis of Flexible Microheaters |
| title_sort | design and thermal analysis of flexible microheaters |
| topic | microheater heating wire structure PID control graphene thin film fast response |
| url | https://www.mdpi.com/2072-666X/13/7/1037 |
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