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Related Experiment Video

Updated: Sep 1, 2025

Temperature-Controlled Assembly and Characterization of a Droplet Interface Bilayer

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Published on: April 19, 2021

Phase-field numerical study on the dynamic process of thermocapillary patterning.

Qingzhen Yang^1,2,3,4, Yankui Liu⁵, Xinmiao Jia^1,2

¹The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, People's Republic of China.

Physical Review. E

|August 17, 2022

Summary

Nonuniform temperatures drive thermocapillary flow (Marangoni effect), enabling precise micro- and nanostructure fabrication via thermocapillary patterning. This study models the dynamic process and parameter influences for advanced material structuring.

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Last Updated: Sep 1, 2025

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Area of Science:

Fluid Dynamics
Materials Science
Surface Physics

Background:

Surface tension is temperature-dependent, leading to thermocapillary flow (Marangoni effect) when temperature gradients exist.
Thermocapillary patterning utilizes this effect to deform thin liquid films, creating micro- and nanostructures that often replicate template topography.

Purpose of the Study:

To develop and employ a numerical model for studying the dynamic process of thermocapillary patterning.
To investigate the influence of key parameters on the thermocapillary patterning phenomenon.

Main Methods:

Development of a two-phase flow numerical model utilizing the phase field method.
The phase field approach allows seamless integration of thermal fields, multiphase flow, and free surface deformation without remeshing.

Main Results:

The numerical model successfully simulated the dynamic process of thermocapillary patterning.
Investigated the impact of temperature, geometric parameters, and contact angle on structure formation.

Conclusions:

The phase field-based numerical model is effective for studying thermocapillary patterning dynamics.
Understanding parameter effects is crucial for optimizing the fabrication of micro- and nanostructures using this technique.