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An Analytic Orthotropic Heat Conduction Model for the Stretchable Network Heaters.
Zeqing He1, Yingli Shi2, Jin Nan3
1Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China.
Micromachines
|July 27, 2022
Summary
Researchers developed a strategy to improve temperature uniformity in stretchable electrodes for hyperthermia devices. This study guides the design of more effective thermotherapy electrodes by analyzing heat transfer in orthotropic substrates.
Area of Science:
- Materials Science
- Biomedical Engineering
- Heat Transfer
Background:
- Epidermal electronic systems (EES) offer advantages for hyperthermia physiotherapy.
- Stretchable flexible electrodes are crucial for EES but can cause uneven temperature distribution due to electrode spacing.
- This unevenness degrades thermotherapy effectiveness.
Purpose of the Study:
- To propose a temperature distribution manipulation strategy for stretchable electrodes.
- To investigate the impact of orthotropic substrates on temperature uniformity in heat transfer systems.
- To guide the design of stretchable electrodes for uniform temperature distribution.
Main Methods:
- Established a theoretical model for an orthotropic heat transfer system with horseshoe-shaped mesh electrodes.
- Utilized finite element analysis to study temperature distribution.
- Parametrically analyzed the influence of thermal conductivity ratios on temperature uniformity.
Main Results:
- Demonstrated that orthotropic substrates can be used to manipulate temperature distribution.
- Identified the critical role of the thermal conductivity ratio in achieving uniform heating.
- Showcased the effectiveness of the proposed strategy in improving temperature uniformity.
Conclusions:
- The proposed temperature distribution manipulation strategy is effective for stretchable electrodes.
- Understanding the thermal properties of orthotropic substrates is key to designing uniform thermotherapy electrodes.
- This research provides valuable insights for fabricating advanced EES for medical applications.
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