Collective interactions in the nucleation and growth of surface droplets
Chenglong Xu, Haitao Yu, Shuhua Peng, Ziyang Lu, Lei Lei, Detlef Lohse, Xuehua Zhang
Soft Matter | ROYAL SOC CHEMISTRY | Published : 2017
In the process of solvent exchange, oil droplets nucleate and grow on a solid substrate in response to the oversaturation generated through the displacement of a good oil solvent by a poor one. The mean size of the droplets depends on flow rate, flow geometry and solution conditions. In this work, we investigate the surface coverage of the droplets and the correlation between the base area of the droplets and of the bare zone surrounding the droplets for various flow and solution conditions during the solvent exchange. The surface coverage increases with the increase in the flow rate, channel height and the oil concentration, and reaches a plateau between 35% and 50%. The spatial correlation..View full abstract
Awarded by ARC Future Fellowship
We thank Dennis van Gils for calculation the structure functions from our experimental data and Huanshu Tan for valuable assistance in Matlab coding. We also acknowledge technical support from the RMIT Micro-Nano Research Facility. X. H. Z. acknowledges the support from an ARC Future Fellowship (FFT120100473) and C. X. from a Melbourne International Engagement Scholarship. We also acknowledge support from MCEC, supported by the Dutch NWO Gravitational program.