Electric Field Induced Instability and Pattern Formation in Thin Liquid Films

Langmuir ◽  
2005 ◽  
Vol 21 (8) ◽  
pp. 3710-3721 ◽  
Author(s):  
Ruhi Verma ◽  
Ashutosh Sharma ◽  
Kajari Kargupta ◽  
Jaita Bhaumik
Keyword(s):  
Pattern Formation ◽  
Electric Field ◽  
Liquid Films ◽  
Thin Liquid Films

Self-Assembly of Monolayers of Submicron Sized Particles on Thin Liquid Films

2013 ◽  
Author(s):  
Shriram Pillapakkam ◽  
N. A. Musunuri ◽  
P. Singh
Keyword(s):  
Electric Field ◽  
Self Assembly ◽  
Uv Light ◽  
Capillary Forces ◽  
Liquid Films ◽  
Thin Liquid Films ◽  
Liquid Interfaces ◽  
Uv Curable ◽  
Particle Monolayer ◽  
Uv Curable Resin

In this paper, we present a technique for freezing monolayers of micron and sub-micron sized particles onto the surface of a flexible thin film after the self-assembly of a particle monolayer on fluid-liquid interfaces has been improved by the process we have developed where an electric field is applied in the direction normal to the interface. Particles smaller than about 10 microns do not self-assemble under the action of lateral capillary forces alone since capillary forces amongst them are small compared to Brownian forces. We have overcome this problem by applying an electric field in the direction normal to the interface which gives rise to dipoledipole and capillary forces which cause the particles to arrange in a triangular pattern. The technique involves assembling the monolayer on the interface between a UV-curable resin and another liquid by applying an electric field, and then curing the resin by applying UV light. The monolayer becomes embedded on the surface of the solidified resin film.

Instability and Pattern Formation in Thin Liquid Films on Chemically Heterogeneous Substrates

Langmuir ◽  
2000 ◽  
Vol 16 (26) ◽  
pp. 10243-10253 ◽  
Author(s):  
Kajari Kargupta ◽  
Rahul Konnur ◽  
Ashutosh Sharma
Keyword(s):  
Pattern Formation ◽  
Liquid Films ◽  
Thin Liquid Films

Spinodal instability and pattern formation in thin liquid films confined between two plates

2006 ◽  
Vol 296 (1) ◽  
pp. 220-232 ◽  
Author(s):  
Ruhi Verma ◽  
Ashutosh Sharma ◽  
Indrani Banerjee ◽  
Kajari Kargupta
Keyword(s):  
Pattern Formation ◽  
Liquid Films ◽  
Thin Liquid Films ◽  
Spinodal Instability

Pattern Formation in the Evaporation of Thin Liquid Films

1995 ◽  
Vol 35 (1) ◽  
pp. 27-32 ◽  
Author(s):  
M. Elbaum ◽  
S.G. Lipson
Keyword(s):  
Pattern Formation ◽  
Liquid Films ◽  
Thin Liquid Films

scholarly journals Evaporation effects in elastocapillary aggregation

2016 ◽  
Vol 792 ◽  
pp. 168-185 ◽  
Author(s):  
Andreas Hadjittofis ◽  
John R. Lister ◽  
Kiran Singh ◽  
Dominic Vella
Keyword(s):  
Surface Tension ◽  
Fluid Flow ◽  
Pattern Formation ◽  
Finite Time ◽  
Body Problem ◽  
Evaporation Rate ◽  
Liquid Films ◽  
Thin Liquid Films ◽  
Lubrication Theory ◽  
Two Body Problem

We consider the effect of evaporation on the aggregation of a number of elastic objects due to a liquid’s surface tension. In particular, we consider an array of spring–block elements in which the gaps between blocks are filled by thin liquid films that evaporate during the course of an experiment. Using lubrication theory to account for the fluid flow within the gaps, we study the dynamics of aggregation. We find that a non-zero evaporation rate causes the elements to aggregate more quickly and, indeed, to contact within finite time. However, we also show that the final number of elements within each cluster decreases as the evaporation rate increases. We explain these results quantitatively by comparison with the corresponding two-body problem and discuss their relevance for controlling pattern formation in elastocapillary systems.

Pattern Formation in Unstable Thin Liquid Films

1998 ◽  
Vol 81 (16) ◽  
pp. 3463-3466 ◽  
Author(s):  
Ashutosh Sharma ◽  
Rajesh Khanna
Keyword(s):  
Pattern Formation ◽  
Liquid Films ◽  
Thin Liquid Films

Influence of Electrostatic and Chemical Heterogeneity on the Electric-Field-Induced Destabilization of Thin Liquid Films

Langmuir ◽  
2011 ◽  
Vol 27 (20) ◽  
pp. 12472-12485 ◽  
Author(s):  
Arnab Atta ◽  
David G. Crawford ◽  
Charles R. Koch ◽  
Subir Bhattacharjee
Keyword(s):  
Electric Field ◽  
Liquid Films ◽  
Thin Liquid Films ◽  
Chemical Heterogeneity

Electric-Field-Induced Pattern Morphologies in Thin Liquid Films

2006 ◽  
Vol 16 (7) ◽  
pp. 926-934 ◽  
Author(s):  
N. E. Voicu ◽  
S. Harkema ◽  
U. Steiner
Keyword(s):  
Electric Field ◽  
Liquid Films ◽  
Thin Liquid Films
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