Wetting Behavior of Homopolymer Films on Chemically Similar Block Copolymer Surfaces

Liu, Y.; Rafailovich, Miriam; Sokolov, Jonathan; Schwarz, S. A.; Zhong, Xing; Eisenberg, Adi; Krämer, Edward J.; Sauer, Bryan B.; Satija, S. K.

doi:10.1103/physrevlett.73.440

Cited by 112 publications

(154 citation statements)

References 15 publications

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“…On planar surfaces it was found that the contour of the island boundaries was well fit with the theory of Turner et al 9,10 In this paper we will also investigate whether this fact remains unchanged on rough surfaces.…”

Section: Introductionmentioning

confidence: 62%

“…As described previously, this procedure causes the symmetric block copolymers to order in lamellae parallel to the Si substrate with PS and P2VP layers always present at the vacuum and Si interfaces, respectively. 9 The triblock copolymers (P2VP-PS-P2VP) used in this study have also been shown to order in layers consisting of cylinders lying parallel to the Si interface. The cylinders have P2VP cores and PS coronas, and the lamellar height listed in Table 1, L ) 210 Å, is the measured core-core spacing perpendicular to the surface between cylinders in adjacent layers (for details see ref 16).…”

Section: Methodsmentioning

confidence: 99%

“…9 This layer occurs for all structures (lamellar, cylindrical, conformal, and nonconformal) on the gratings or flat Si, and the thickness never exceeds L/2.…”

Section: Conformality Of Smectic Copolymer Filmsmentioning

confidence: 99%

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Confinement of Block Copolymers on Patterned Surfaces

Li¹,

Qu²,

Rafailovich³

et al. 1997

Macromolecules

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Smectic ordered films of the copolymer PS-P2VP were studied on periodic silicon surfaces (surface gratings). The modulation of the film surface with respect to that of the underlying substrate was found to be either in phase (conformal) orssurprisinglysout of phase (anticonformal). The critical height of the surface grating which is defined by the transition from conformal behavior to the anticonformal conformation of the films was found to be proportional to the lamellar height of the diblock copolymers. This has been quantitatively understood within a mean field theory as a result of balancing the deformation and interfacial energies. Furthermore, diblock copolymer films propagate the substrate roughness by significantly larger distances than observed for amorphous homopolymers.

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Section: Introductionmentioning

confidence: 62%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Confinement of Block Copolymers on Patterned Surfaces

Li¹,

Qu²,

Rafailovich³

et al. 1997

Macromolecules

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“…The stability of thin liquid films on solid substrates is an area of great current interest [1][2][3][4][5][6][7][8][9][10][11]. Aside from its technological importance (coatings, lubricants, etc.)…”

Section: Introductionmentioning

confidence: 99%

Stability of thin polymer films on a corrugated substrate

Rehse

Wang

Hund

et al. 2001

The European Physical Journal E

102

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We study the wetting behaviour of thin polystyrene (PS) films on regularly corrugated silicon substrates. Below a critical film thickness the PS films are unstable and dewet the substrates. The dewetting process leads to the formation of nanoscopic PS channels filling the grooves of the corrugated substrates. Films thicker than the critical thickness appear stable and follow the underlying corrugation pattern. The critical thickness is found to scale with the radius of gyration of the unperturbed polymer chains.

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“…[4][5][6][7][8][9] Grafting polymers by one end at a high areal density onto a solid substrate leads to a reduction of the entropy of the grafted with respect to free molecules. This may lead to autophobic behavior, [4][5][6][7][8][9] i.e., the free molecules dewet the grafted layer [10][11][12][13][14][15][16] and form droplets on the brush.…”

Section: Introductionmentioning

confidence: 99%

Deriving Molecular Parameters of Interfaces Between Chemically Identical Polymers from Macroscopically Observed Phenomena

Reiter

2005

Macromolecular Symposia

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Summary: By utilizing model systems, macroscopically observable phenomena like friction or dewetting allow to identify and to quantify molecular interfacial parameters like molecular interpenetration depth, interfacial tension, or slippage length between grafted and free chemically identical polymers. We present experimental results, which permit to extract these parameters from simple contact angle measurements or by following the dewetting process in real time with a simple optical microscope. We also show how these model experiments can provide valuable insight and fundamental understanding of processes like polymeric friction and adhesion.

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Wetting Behavior of Homopolymer Films on Chemically Similar Block Copolymer Surfaces

Cited by 112 publications

References 15 publications

Confinement of Block Copolymers on Patterned Surfaces

Confinement of Block Copolymers on Patterned Surfaces

Stability of thin polymer films on a corrugated substrate

Deriving Molecular Parameters of Interfaces Between Chemically Identical Polymers from Macroscopically Observed Phenomena

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