弹性液滴吸附动力学的三维模拟研究

Elastic capsules are droplets enclosed by elastic membranes. Specific substances can appear on the capsule membrane and form specific adhesion bonds with functionalized solid surfaces. By coupling the front tracking method for the membrane tracking and adhesive dynamical simulation for the specific adhesion, three-dimensional numerical model is developed to study the effects of adhesion number and capillary number on the adhesive dynamics of elastic capsules. It is found that increasing capillary number at high adhesion numbers promotes the capsule adhesion induced by the enlarged deformation, while increasing capillary number at low adhesion numbers promotes the capsule detachment as the resistance of the capsule membrane against the force from the high pressure region between the capsule and solid wall is reduced.