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Solute based Lagrangian scheme in modeling the drying process of soft matter solutions

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Abstract.

We develop a new dynamical model to study the drying process of a droplet of soft matter solutions. The model includes the processes of solute diffusion, gel-layer formation and cavity creation. A new scheme is proposed to handle the diffusion dynamics taking place in such processes. In this scheme, the dynamics is described by the motion of material points taken on solute. It is convenient to apply this scheme to solve problems that involve moving boundaries and phase changes. As an example, we show results of a numerical calculation for a drying spherical droplet, and discuss how initial concentration and evaporation rate affect the structural evolution of the droplet.

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Authors and Affiliations

  1. State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, 100190, Beijing, China

    Fanlong Meng & Zhongcan Ouyang

  2. Kavli Institute for Theoretical Physics China, 100190, Beijing, China

    Fanlong Meng & Zhongcan Ouyang

  3. Center of Soft Matter Physics and its Applications, Beihang University, Beijing, China

    Fanlong Meng, Ling Luo & Masao Doi

  4. Center for Advanced Study, Tsinghua University, 100084, Beijing, China

    Zhongcan Ouyang

Authors
  1. Fanlong Meng
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  2. Ling Luo
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  3. Masao Doi
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  4. Zhongcan Ouyang
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Correspondence to Fanlong Meng.

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Meng, F., Luo, L., Doi, M. et al. Solute based Lagrangian scheme in modeling the drying process of soft matter solutions. Eur. Phys. J. E 39, 22 (2016). https://doi.org/10.1140/epje/i2016-16022-9

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  • DOI: https://doi.org/10.1140/epje/i2016-16022-9

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