Cargando…

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...

Descripción completa

Detalles Bibliográficos
Autores principales: Li, Dezhao, Ruan, Yangtao, Chen, Chuangang, He, Wenfeng, Chi, Cheng, Lin, Qiang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9319418/
https://www.ncbi.nlm.nih.gov/pubmed/35888852
http://dx.doi.org/10.3390/mi13071037
_version_ 1784755544108564480
author Li, Dezhao
Ruan, Yangtao
Chen, Chuangang
He, Wenfeng
Chi, Cheng
Lin, Qiang
author_facet Li, Dezhao
Ruan, Yangtao
Chen, Chuangang
He, Wenfeng
Chi, Cheng
Lin, Qiang
author_sort Li, Dezhao
collection PubMed
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.
format Online
Article
Text
id pubmed-9319418
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-93194182022-07-27 Design and Thermal Analysis of Flexible Microheaters Li, Dezhao Ruan, Yangtao Chen, Chuangang He, Wenfeng Chi, Cheng Lin, Qiang Micromachines (Basel) Article 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. MDPI 2022-06-29 /pmc/articles/PMC9319418/ /pubmed/35888852 http://dx.doi.org/10.3390/mi13071037 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Li, Dezhao
Ruan, Yangtao
Chen, Chuangang
He, Wenfeng
Chi, Cheng
Lin, Qiang
Design and Thermal Analysis of Flexible Microheaters
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 Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9319418/
https://www.ncbi.nlm.nih.gov/pubmed/35888852
http://dx.doi.org/10.3390/mi13071037
work_keys_str_mv AT lidezhao designandthermalanalysisofflexiblemicroheaters
AT ruanyangtao designandthermalanalysisofflexiblemicroheaters
AT chenchuangang designandthermalanalysisofflexiblemicroheaters
AT hewenfeng designandthermalanalysisofflexiblemicroheaters
AT chicheng designandthermalanalysisofflexiblemicroheaters
AT linqiang designandthermalanalysisofflexiblemicroheaters