title: Solute based Lagrangian scheme in modeling the drying process of soft matter solutions.
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.
authors.affiliation: State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, 100190, Beijing, China. flm@itp.ac.cn.|Kavli Institute for Theoretical Physics China, 100190, Beijing, China. flm@itp.ac.cn.|Center of Soft Matter Physics and its Applications, Beihang University, Beijing, China. flm@itp.ac.cn.
authors.forename: Fanlong
authors.initials: F
authors.lastname: Meng
authors.affiliation: Center of Soft Matter Physics and its Applications, Beihang University, Beijing, China.
authors.forename: Ling
authors.initials: L
authors.lastname: Luo
authors.affiliation: Center of Soft Matter Physics and its Applications, Beihang University, Beijing, China. masao.doi@buaa.edu.cn.
authors.forename: Masao
authors.initials: M
authors.lastname: Doi
authors.affiliation: State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, 100190, Beijing, China.|Kavli Institute for Theoretical Physics China, 100190, Beijing, China.|Center for Advanced Study, Tsinghua University, 100084, Beijing, China.
authors.forename: Zhongcan
authors.initials: Z
authors.lastname: Ouyang
keywords: Topical Issue: Wetting and Drying: Physics and Pattern Formation