Control of morphology in pattern directed dewetting of thin polymer films

Mukherjee, Rabibrata; Bandyopadhyay, Dipankar; Sharma, Ashutosh

doi:10.1039/b806925e

Cited by 114 publications

(170 citation statements)

References 63 publications

(225 reference statements)

Supporting

Mentioning

158

Contrasting

Order By: Relevance

“…Assuming the drop to be a spherical cap, the drop boundary on the substrate, that is, the three-phase contact line (TPCL), where solid, liquid, and vapor meet, has the shape of a perfect circle, for an ideal smooth surface. In this article, we do not elaborate on rough or prepatterned surfaces, where there may be interesting deviations [88,89]. We also leave out from our discussion sessile drops describing works on soft or liquid surfaces.…”

Section: Evaporation Of a Pure Fluidmentioning

confidence: 99%

Droplet Drying Patterns on Solid Substrates: From Hydrophilic to Superhydrophobic Contact to Levitating Drops

Tarafdar

Tarasevich

Choudhury

et al. 2018

Advances in Condensed Matter Physics

View full text Add to dashboard Cite

This review is devoted to the simple process of drying a multicomponent droplet of a complex fluid which may contain salt or other inclusions. These processes provide a fascinating subject for study. The explanation of the rich variety of patterns formed is not only an academic challenge but also a problem of practical importance, as applications are growing in medical diagnosis and improvement of coating/printing technology. The fundamental scientific problem is the study of the mechanism of microand nanoparticle self-organization in open systems. The specific fundamental problems to be solved, related to this system, are the investigation of the mass transfer processes, the formation and evolution of phase fronts, and the identification of mechanisms of pattern formation. The drops of liquid containing dissolved substances and suspended particles are assumed to be drying on a horizontal solid insoluble smooth substrate. The chemical composition and macroscopic properties of the complex fluid, the concentration and nature of the salt, the surface energy of the substrate, and the interaction between the fluid and substrate which determines the wetting all affect the final morphology of the dried film. The range of our study encompasses the fully wetting case with zero contact angle between the fluid and substrate to the case where the drop is levitated in space, so there is no contact with a substrate and angle of contact can be considered as 180 ∘ .

show abstract

Section: Evaporation Of a Pure Fluidmentioning

confidence: 99%

Droplet Drying Patterns on Solid Substrates: From Hydrophilic to Superhydrophobic Contact to Levitating Drops

Tarafdar

Tarasevich

Choudhury

et al. 2018

Advances in Condensed Matter Physics

View full text Add to dashboard Cite

show abstract

“…We also considered the situation where BCP films are in contact with topographic patterned substrates used in graphoepitaxial [12,13,25] and nanoimprint lithography [14,15,26,27] set-ups. The surface is modeled as a sequence of grooves that have a slight preference toward one of the blocks (say, the A block).…”

Section: Henri Orlandmentioning

confidence: 99%

Block copolymer films with free interfaces: Ordering by nanopatterned substrates

2012

View full text Add to dashboard Cite

“…The size and separation distances of Mn 12 aggregates were controlled over multiple length scales by tuning the dimension of the features in the stamps, while the shape of the aggregates controlled via solvent treatment process. In addition to organic molecules, numerous works have been done concerning arrays of polymer droplets produced by dewetting of thin polymer films [20][21][22][23]. For example, Luo et al reported on the formation of ordered polymer droplet by using dewetting phenomena of thin polymer film on the stripe-patterned substrates having stripe widths of 5-20 lm.…”

Section: Introductionmentioning

confidence: 97%