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Science 16 August 1996:
Vol. 273. no. 5277, pp. 931 - 933
DOI: 10.1126/science.273.5277.931
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Reports

Local Control of Microdomain Orientation in Diblock Copolymer Thin Films with Electric Fields

T. L. Morkved, M. Lu, A. M. Urbas, E. E. Ehrichs, * H. M. Jaeger, dagger P. Mansky, T. P. Russell

Local control of the domain orientation in diblock copolymer thin films can be obtained by the application of electric fields on micrometer-length scales. Thin films of an asymmetric polystyrene-polymethylmethacrylate diblock copolymer, with cylindrical polymethylmethacrylate microdomains, were spin-coated onto substrates previously patterned with planar electrodes. The substrates, 100-nanometer-thick silicon nitride membranes, allow direct observation of the electrodes and the copolymer domain structure by transmission electron microscopy. The cylinders aligned parallel to the electric field lines for fields exceeding 30 kilovolts per centimeter, after annealing at 250°C in an inert atmosphere for 24 hours. This technique could find application in nanostructure fabrication.

T. L. Morkved, M. Lu, A. M. Urbas, E. E. Ehrichs, H. M. Jaeger, James Franck Institute and Department of Physics, University of Chicago, Chicago, IL 60637, USA.
P. Mansky and T. P. Russell, IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, CA 95120, USA.
*   Present address: Advanced Micro Devices, 5204 East Ben White Boulevard, Austin, TX 78741, USA.

dagger    To whom correspondence should be addressed.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Directed Assembly of Block Copolymer Blends into Nonregular Device-Oriented Structures.
M. P. Stoykovich, M. Muller, S. O. Kim, H. H. Solak, E. W. Edwards, J. J. de Pablo, and P. F. Nealey (2005)
Science 308, 1442-1446
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Ultrahigh-Density Nanowire Arrays Grown in Self-Assembled Diblock Copolymer Templates.
T. Thurn-Albrecht, J. Schotter, G. A. Kästle, N. Emley, T. Shibauchi, L. Krusin-Elbaum, K. Guarini, C. T. Black, M. T. Tuominen, and T. P. Russell (2000)
Science 290, 2126-2129
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Pathways to Macroscale Order in Nanostructured Block Copolymers.
Z. Chen, J. A. Kornfield, S. D. Smith, J. T. Grothaus, and M. M. Satkowski (1997)
Science 277, 1248-1253
   Abstract »    Full Text »
Block Copolymer Lithography: Periodic Arrays of ~1011 Holes in 1 Square Centimeter.
M. Park, C. Harrison, P. M. Chaikin, R. A. Register, and D. H. Adamson (1997)
Science 276, 1401-1404
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