Coarsening dynamics of dewetting nanodroplets on chemically patterned substrates

被引：7
|
作者：
Asgari, M. [1 ]
Moosavi, A. [1 ]
机构：
[1] Sharif Univ Technol, Dept Mech Engn, Tehran, Iran
来源：
PHYSICAL REVIEW E | 2012年 / 86卷 / 01期
关键词：
THIN LIQUID-FILMS; INSTABILITY; DROPLETS; SURFACE; CRYSTAL; RATES; MODEL; FLOW;
D O I：
10.1103/PhysRevE.86.016303
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
Mesoscopic hydrodynamic equations are solved to investigate coarsening dynamics of two interacting nanodroplets on chemically patterned substrates. The effects of different parameters such as the surface chemical pattern, the slip length, the profile of the disjoining pressure, the size of the droplets, and the contact angles on the coarsening are studied. Our results reveal that the presence of a chemical heterogeneity can enhance or weaken the coarsening dynamics depending on the pattern type and positions of the droplets on the substrate. Also increasing the contact angles to values larger than a critical value may qualitatively change the coarsening process, and the profile of the disjoining pressure and the slippage can appreciably modify the coarsening rate.
引用
收藏
页数：14
相关论文
共 50 条
  • [41] Dewetting of Patterned Silicon Substrates Leading to a Selective Deposition of Micellar-Based Nanoparticles
    Riskin, A.
    De Dobbelaere, C.
    Shan, L.
    Boyen, H. G.
    D'Haen, J.
    Hardy, A.
    van Bael, M. K.
    [J]. JOURNAL OF PHYSICAL CHEMISTRY C, 2012, 116 (19): : 10743 - 10752
  • [42] Evaporation of Nanodroplets on Heated Substrates: A Molecular Dynamics Simulation Study
    Zhang, Jianguo
    Leroy, Frederic
    Mueller-Plathe, Florian
    [J]. LANGMUIR, 2013, 29 (31) : 9770 - 9782
  • [43] Planar Alignment of Columnar Discotic Liquid Crystals by Isotropic Phase Dewetting on Chemically Patterned Surfaces
    Bramble, Jonathan P.
    Tate, Daniel J.
    Revill, Derek J.
    Sheikh, Khizar H.
    Henderson, James R.
    Liu, Feng
    Zeng, Xiangbing
    Ungar, Goran
    Bushby, Richard J.
    Evans, Stephen D.
    [J]. ADVANCED FUNCTIONAL MATERIALS, 2010, 20 (06) : 914 - 920
  • [44] Droplet dynamics on chemically heterogeneous substrates
    Savva, Nikos
    Groves, Danny
    Kalliadasis, Serafim
    [J]. JOURNAL OF FLUID MECHANICS, 2019, 859 : 321 - 361
  • [45] Cell Dynamics Simulations of Cylinder-Forming Diblock Copolymers in Thin Films on Topographical and Chemically Patterned Substrates
    Dessi, Roberta
    Pinna, Marco
    Zvelindovsky, Andrei V.
    [J]. MACROMOLECULES, 2013, 46 (05) : 1923 - 1931
  • [46] Molecular dynamics of immiscible fluids in chemically patterned nanochannels
    Cieplak, Marek
    Banavar, Jayanth R.
    [J]. JOURNAL OF CHEMICAL PHYSICS, 2008, 128 (10):
  • [47] Mesopatterning of thin liquid films by templating on chemically patterned complex substrates
    Kargupta, K
    Sharma, A
    [J]. LANGMUIR, 2003, 19 (12) : 5153 - 5163
  • [48] Self-Organized Microstructures in Thin Bilayers on Chemically Patterned Substrates
    Bandyopadhyay, Dipankar
    Sharma, Ashutosh
    [J]. JOURNAL OF PHYSICAL CHEMISTRY C, 2010, 114 (05): : 2237 - 2247
  • [49] A better prediction of the contact angle for nanodroplets on chemically patterned surfaces by considering varied contact line width
    Wen, Yongshuai
    Liu, Yongshou
    Yuan, Zhe
    [J]. SURFACES AND INTERFACES, 2023, 39
  • [50] Dewetting transition of water on nanostructured and wettability patterned surfaces: A molecular dynamics study
    Ding, Wenyang
    Wang, Man
    Dai, Xingbo
    Zhang, Jingzhi
    Xin, Gongming
    Wang, Xinyu
    [J]. JOURNAL OF MOLECULAR LIQUIDS, 2021, 336
12345