纳米结构
润湿
材料科学
纳米孔
纳米技术
成核
纳米尺度
接触角
基质(水族馆)
形态学(生物学)
化学物理
润湿转变
相(物质)
复合材料
化学
地质学
有机化学
海洋学
生物
遗传学
作者
Limin Zhou,Shumin Yang,Nannan Quan,Zhanli Geng,Shuo Wang,Binyu Zhao,Xingya Wang,Yaming Dong,Renzhong Tai,Jun Hu,Lijuan Zhang
标识
DOI:10.1021/acsami.1c17139
摘要
Surfaces with nanostructure patterning are broadly encountered in nature, and they play a significant role in regulating various phenomena such as phase transition at the liquid/solid interface. Here, we designed two kinds of template substrates with periodic nanostructure patterns [i.e., nanotrench (NT) and nanopore (NP)]. Surface nanodroplets produced on these nanostructure surfaces were characterized to acquire their morphology and wetting properties. We show that nanostructure patterning could effectively regulate the shape, contact radius, and nucleate site of nanodroplets. While nanodroplets on the NT structure are constrained in one dimension, nanodroplets on the NP structure have enhanced the wetting property with constraints from two dimensions. Further numerical analysis indicates that the morphology and contact angles of nanodroplets on the NT structure depend on the substrate wettability and the droplet volume. These observations demonstrate how physical geometry and chemical heterogeneity of a substrate surface affect the growth and spreading of surface nanodroplets, which deepens our understanding on nanoscale phase separation.
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