Fig. 3: Characterization of the static-state particle fabrication process.
From: Static-state particle fabrication via rapid vitrification of a thixotropic medium
a Rheological behavior of the starch/water medium. Either increasing a starch concentration ϕ in the medium or decreasing a shearing rate ω increases the viscosity of the medium \({\eta }_{{\rm{C}}}\). Hydrolysis of the starch reduces the viscosity \({\eta }_{{\rm{C}}}\), thereby facilitating the particle cleaning procedure. b Stress relaxation of the starch/water medium. The vitrification stress σv is defined where the residual stress plateaus after 1 h. c Vitrification diameter \({d}_{{\rm{v}}}\) of Field’s Metal (FM) particles in the starch/water medium. Increasing ϕ results in a higher \({d}_{{\rm{v}}}\) attributed to the increased \({\sigma }_{{\rm{v}}}\). d A relation of the concentration ϕ and the mean particle diameter \(\bar{d}\) for polymer resins and FM. Two types of polymer resins are used: high-viscosity Dragon Skin 10 and low-viscosity Semicosil 964. Error bars denote one standard deviation. e Time-lapse images of simulated particle collision and coalescence behavior. Each particle is differently color-coded for clarity. f Coalescence probability Pc as a function of the viscosity \({\eta }_{{\rm{C}}}\). Starch concentration ϕ in correspondence to \({\eta }_{{\rm{C}}}\) reveals that a higher starch concentration in the medium mitigates the coalescence of the distributed phase.
