Effect of structural anisotropy on the coarsening kinetics of diblock copolymer striped patterns

被引：69

作者：

Ruiz, R. ^{[1
]}

Bosworth, J. K. ^{[2
]}

Black, C. T. ^{[1
]}

机构：

[1] IBM Corp, Thomas J Watson Res Ctr, Yorktown Hts, NY 10598 USA

[2] Cornell Univ, Dept Mat Sci & Engn, Ithaca, NY 14853 USA

来源：

PHYSICAL REVIEW B | 2008年 / 77卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.77.054204

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We compare the time evolution of striped pattern correlation lengths for three different poly(styrene-b-methyl methacrylate) (PS-b-PMMA) diblock copolymer materials having comparable molecular diffusion rates. Striped patterns formed from cylindrical-phase materials coarsen with enhanced growth exponents and have reduced disclination diffusion activation energies as compared to striped patterns formed from smectic A lamellar-phase materials. The observed differences stem from distinct topological constraints in cylindrical (columnar) and lamellar (SmA) striped patterns. Cylindrical domains create a channel for layer breaking without molecule interdiffusion, facilitating an enhanced rate of pattern coarsening and reducing the disclination diffusion activation energy.

引用

页数：5

共 31 条

[21]

Kleman M., 2003, SOFT MATTER PHYS INT

[22] MECHANISMS OF CHAIN DIFFUSION IN LAMELLAR BLOCK-COPOLYMERS [J].

LODGE, TP ;

DALVI, MC .

PHYSICAL REVIEW LETTERS, 1995, 75 (04) :657-660

[23] Controlling polymer-surface interactions with random copolymer brushes [J].

Mansky, P ;

Liu, Y ;

Huang, E ;

Russell, TP ;

Hawker, CJ .

SCIENCE, 1997, 275 (5305) :1458-1460

[24] Influence of the morphology on the translational and collective dynamics in ordered diblock copolymer melts [J].

Papadakis, CM ;

Rittig, F .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2005, 17 (17) :R551-R570

[25] Induced orientational order in symmetric diblock copolymer thin films [J].

Ruiz, Ricardo ;

Sandstrom, Robert L. ;

Black, Charles T. .

ADVANCED MATERIALS, 2007, 19 (04) :587-+

[26] TEMPERATURE-DEPENDENCE OF THE INTERACTION PARAMETER OF POLYSTYRENE AND POLY(METHYL METHACRYLATE) [J].

RUSSELL, TP ;

HJELM, RP ;

SEEGER, PA .

MACROMOLECULES, 1990, 23 (03) :890-893

[27] Edge effects on the order and freezing of a 2D array of block copolymer spheres [J].

Segalman, RA ;

Hexemer, A ;

Kramer, EJ .

PHYSICAL REVIEW LETTERS, 2003, 91 (19)

[28] SELF-DIFFUSION OF SYMMETRICAL DIBLOCK COPOLYMER MELTS NEAR THE ORDERING TRANSITION [J].

SHULL, KR ;

KRAMER, EJ ;

BATES, FS ;

ROSEDALE, JH .

MACROMOLECULES, 1991, 24 (06) :1383-1386

[29] Defect evolution in block copolymer thin films via temporal phase transitions [J].

Tsarkova, Larisa ;

Horvat, Andriana ;

Krausch, Georg ;

Zvelindovsky, Andrei V. ;

Sevink, G. J. Agur ;

Magerle, Robert .

LANGMUIR, 2006, 22 (19) :8089-8095

[30] Rapid transitions between defect configurations in a block copolymer melt [J].

Tsarkova, Larisa ;

Knoll, Armin ;

Magerle, Robert .

NANO LETTERS, 2006, 6 (07) :1574-1577

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