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Updated: Jan 31, 2026

Thermal Measurement Techniques in Analytical Microfluidic Devices
Published on: June 3, 2015
An analytic model of microfluidic system triggered by thermal expansion
Yan Shi1, Qian Wu2, Dongyang Sun3
1State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics & Astronautics, Nanjing, 210016, China. yshi@nuaa.edu.cn.
This study presents an analytical model for microfluidic injection processes, validated by finite element analysis. The model optimizes soft microfluidic system design for biomedical applications like pharmacology.
Area of Science:
- Biomedical Engineering
- Microfluidics
- Computational Modeling
Background:
- Microfluidics is crucial for precise fluid control in biomedicine.
- Soft microfluidic systems offer programmability for applications in pharmacology and optogenetics.
- Accurate modeling of injection processes is needed for system optimization.
Purpose of the Study:
- To develop an analytical model for characterizing the injection process in soft microfluidic systems.
- To validate the analytical model using finite element analysis (FEA).
- To optimize microfluidic system design through parametric analysis.
Main Methods:
- Established an analytical model based on the theory of thermal expansion.
- Employed finite element analyses (FEA) for model validation.
- Performed parametric analysis on key design variables (sphere radius, central angle, expandable layer thickness).
Main Results:
- The analytical model accurately characterizes the microfluidic injection process.
- FEA results validated the practicality and accuracy of the developed analytical model.
- Parametric analysis identified relationships between design parameters and infusion volume.
Conclusions:
- The developed analytical model is a practical tool for understanding and predicting microfluidic injection.
- The study provides a foundation for optimizing soft microfluidic system design for enhanced performance.
- This work supports the advancement of microfluidic applications in pharmacology and optogenetics.
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