Pattern Formation in Spontaneous Dewetting of Thin Apolar Films

Journal of Colloid and Interface Science
Rajesh Khanna, A Sharma

Abstract

Various stages of evolution of surface instability leading to dewetting are investigated for thin (<100 nm) fluid films subjected to the long range van der Waals interactions on a nonwettable solid. The problems of pattern selection and complete three-dimensional morphology are resolved based on numerical solutions of the nonlinear two-dimensional thin film equation. The initial small scale random nonhomogeneities are quickly reorganized into a large scale coherent bicontinuous structure consisting of "hills" and "valleys," which is reminiscent of the classical picture of the spinodal decomposition in the linear approximation. On the level of a "unit-cell," the bicontinuous structure slowly evolves into an increasingly axisymmetric circular pattern, and eventually a growing circular hole (dry spot) is formed. Scaling arguments, as well as the simulations give the characteristic mean area of a unit-cell containing a single hole to be proportional to (h04gamma/|S|), where h0 is mean thickness, gamma is surface tension, and S is the spreading coefficient. Copyright 1997 Academic Press. Copyright 1997Academic Press

Citations

Apr 20, 2005·The Journal of Chemical Physics·H S JeonH Yim
Sep 1, 2006·The Journal of Chemical Physics·Dipankar Bandyopadhyay, Ashutosh Sharma
Dec 2, 2004·Journal of Colloid and Interface Science·Vlad Mitlin
Mar 27, 1999·Journal of Colloid and Interface Science·A GhatakA Sharma
May 18, 1999·Journal of Colloid and Interface Science·G ReiterM O David
Aug 6, 2013·Journal of Colloid and Interface Science·Sreeram K KalpathySatish Kumar
Nov 25, 2014·Langmuir : the ACS Journal of Surfaces and Colloids·Hadi NazaripoorSubir Bhattacharjee
May 26, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Hadi NazaripoorSubir Bhattacharjee
Jan 9, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Daniel B QuinnHoward A Stone
Sep 29, 2015·Soft Matter·Rabibrata Mukherjee, Ashutosh Sharma
Mar 24, 2017·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Tirumala Rao KotniJayati Sarkar
Sep 6, 2000·Physical Review Letters·G ReiterA Sharma
Nov 26, 2010·Nanotechnology·Sebastian StrobelKarl K Berggren
Jun 21, 2006·The European Physical Journal. E, Soft Matter·G TomarG Biswas
Jan 31, 2013·Nanoscale·D SchebarchovS C Hendy
Oct 3, 2019·Physical Review. E·Yixin ZhangDuncan A Lockerby
Feb 20, 2021·Physical Review. E·Anjishnu ChoudhuryJames J Feng
Sep 13, 2014·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Tirumala Rao KotniRajesh Khanna
Sep 6, 2000·Physical Review Letters·A Oron
Apr 16, 2014·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Trung Dac NguyenPhilip D Rack
Aug 23, 2008·The Journal of Physical Chemistry. B·Dipankar Bandyopadhyay, Ashutosh Sharma
Aug 4, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Difu ZhuBai Yang
Feb 7, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Tetyana KuznickiSubir Bhattacharjee
Nov 3, 2004·Langmuir : the ACS Journal of Surfaces and Colloids·Ashutosh Sharma, Ruhi Verma
Mar 5, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Kajari KarguptaRajesh Khanna
Oct 30, 1998·Science·S HerminghausS Schlagowski

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