Article (Scientific journals)
Package Design Thermal Optimization for Metal-Oxide Gas Sensors by Finite Element Modeling and Infra-Red Imaging Characterization
Stoukatch, Serguei; Dupont, François; Laurent, Philippe et al.
2023In Materials, 16 (18), p. 6202
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Keywords :
thermal modeling; thermal management of electronic packages; finite element modeling (FEM); MOX sensor packaging; microassembly
Abstract :
[en] We designed a 3D geometrical model of a metal-oxide gas sensor and its custom packaging and used it in finite element modeling (FEM) analysis for obtaining temperature and heat flux distribution. The 3D computer simulation, performed with GetDP software (version 3.5.0, 13 May 2022), accurately predicted the temperature distribution variation across the entire assembly. Knowing the temperature variation and the location of the hot spots allowed us to select the best electrical interconnect method and to choose the optimal materials combination and optimal geometry. The thermal modeling also confirmed the need to use a low thermal conductivity material to insulate the MOX sensor since the latter is heated to its operational temperature of 250 °C. For that purpose, we used the in-house formulated xerogel–epoxy composite of thermal conductivity of 0.108 W m−1 K−1, which is at least 30% less compared to the best-in-class among commercially available materials. Based on the 3D FEM outputs, we designed, assembled, and characterized a fully functional packaged MOX gas sensor in several configurations. We measured the temperature distribution on all parts of the MOX gas sensor assembly using a thermal imaging infrared (IR) microscope. The results of 3D FEM are in good agreement with the temperature distribution obtained by the non-contact IR thermal characterization.
Disciplines :
Electrical & electronics engineering
Author, co-author :
Stoukatch, Serguei  ;  Université de Liège - ULiège > Département d'électricité, électronique et informatique (Institut Montefiore) > Systèmes microélectroniques intégrés
Dupont, François ;  Université de Liège - ULiège > Département d'électricité, électronique et informatique (Institut Montefiore) > Systèmes microélectroniques intégrés
Laurent, Philippe ;  Université de Liège - ULiège > Département d'électricité, électronique et informatique (Institut Montefiore) > Systèmes microélectroniques intégrés
Redouté, Jean-Michel  ;  Université de Liège - ULiège > Département d'électricité, électronique et informatique (Institut Montefiore) > Systèmes microélectroniques intégrés
Language :
English
Title :
Package Design Thermal Optimization for Metal-Oxide Gas Sensors by Finite Element Modeling and Infra-Red Imaging Characterization
Publication date :
14 September 2023
Journal title :
Materials
eISSN :
1996-1944
Publisher :
MDPI AG
Volume :
16
Issue :
18
Pages :
6202
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
Microsystème_ULg Microsys, Micro+ project (No. 675781-642409)
Funders :
Wallonia-Brussels Federation [BE]
ERDF - European Regional Development Fund [BE]
Funding number :
No. 675781-642409
Funding text :
The work was supported by the Microsystème_ULg Microsys project, funded by the Wallonia (Belgium), and the Micro+ project (No. 675781-642409) co-funded by the European Regional Development Fund (ERDF) and Wallonia (Belgium).
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since 15 September 2023

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