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Electric Field Induced Control of Thin Film Diblock Copolymer Domain Orientation

Published online by Cambridge University Press:  10 February 2011

T. L. Morkved ,
W. A. Lopes ,
M. Lu ,
A. M. Urbas ,
H. M. Jaeger ,
P. Mansky  and
T. P. Russell
T. L. Morkved
Affiliation:
The James Franck Instituteand Department of Physics, The University of Chicago, Chicago, Illinois 60637.
W. A. Lopes
Affiliation:
The James Franck Instituteand Department of Physics, The University of Chicago, Chicago, Illinois 60637.
M. Lu
Affiliation:
The James Franck Instituteand Department of Physics, The University of Chicago, Chicago, Illinois 60637.
A. M. Urbas
Affiliation:
The James Franck Instituteand Department of Physics, The University of Chicago, Chicago, Illinois 60637.
H. M. Jaeger
Affiliation:
The James Franck Instituteand Department of Physics, The University of Chicago, Chicago, Illinois 60637.
P. Mansky
Affiliation:
Conte Center for Polymer Research, University of Massachusetts, Amherst, MA 01003
T. P. Russell
Affiliation:
Conte Center for Polymer Research, University of Massachusetts, Amherst, MA 01003
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Abstract

Local control of domain orientation in diblock copolymer thin films is demonstrated through the use of external electric fields. Thin films of a polystyrene-polymethylmethacrylate diblock copolymers, denoted P(S-b-MMA), were spin coated onto silicon nitride membrane substrates with prefabricated in-plane electrodes, forming cylindrical PMMA microdomains. Films annealed under an applied electric field (E ≤ 37V/μm) at 250°C for 24h under an argon atmosphere showed an alignment of the cylindrical microdomains parallel to the electric field lines. A quantitative measure of the degree of alignment was obtained by correlating the local field strength, E, and direction with the observed cylinder orientation. The alignment was found to saturate above E≈30V/μm, and to decrease rapidly as E falls below this value.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 461: Symposia BB – Morphological Control in Multiphase Polymer Mix… , 1996 , 109
Copyright
Copyright © Materials Research Society 1997

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References

REFERENCES

1. Mansky, P., Harrison, C.K., Chaikin, P. M., Register, R. A., Yao, N., Appl. Phys. Lett 68, 2586 (1996);Google Scholar
Mansky, P., Chaikin, P. M., Thomas, E. L., J. Mat. Sci. 30, 1987 (1995)‥Google Scholar
2. Morkved, T. L., Wiltzius, P., Jaeger, H. M., Grier, D. G., and Witten, T. A., Appl. Phys. Lett. 64, 422 (1994);Google Scholar
Saito, R., Okamura, S., Ishizu, K., Polymer 33, 1099 (1992);Google Scholar
Ishizu, K. et al., Polymer 34, 2256 (1993).Google Scholar
3. Ng, Y. Chan, C., Schrock, R. R., and Cohen, R. E., Chem. Mater. 4, 24 (1992);Google Scholar
Tassoni, R., Schrock, R. R., Chem. Mater. 6, 744(1994).Google Scholar
4. Bates, F.S and Fredrickson, G. H., in Annual Reviews of Physical Chemistry (Annual Reviews, Palo Alto, Ca, 1990), Vol. 41, pp. 525–557;Google Scholar
4. Bates, F.S and Fredrickson, G. H., in Annual Reviews of Physical Chemistry (Annual Reviews, Palo Alto, Ca, 1996.Google Scholar
5. Keller, A., Pedemonte, E., Willmouth, F. M., Nature 225, 538 (1970);Google Scholar
Koppi, K. A., Tirrell, M., Bates, F. S., Almdal, K., Colby, R. H., J. Phys. (Paris) 2, 1941 (1993).Google Scholar
6. Russell, T. P., Coulon, G., Deline, V. R., Miller, D. C., Macromolecules 22, 4600 (1989).Google Scholar
7. Liu, Y. et al., Macromolecules 27, 6559 (1994).Google Scholar
8. A previous account of this work has appeared in: Morkved, T. L., Lu, M., Urbas, A. M., Ehrichs, E. E., Jaeger, H. M., Mansky, P., Russell, T. P., Science 273, 931 (1996).Google Scholar
9. Amundson, K., Helfand, E., Davis, D., Quan, X., Patel, S., Smith, S. D., Macromolecules 24, 6546(1991).Google Scholar
10. Amundson, K., Helfand, E., Quan, X., Smith, S. D., Macromolecules 26, 2698 (1993).Google Scholar
11. Amundson, K., Helfand, E., Quan, X., Hudson, S. D., Smith, S. D., Macromolecules 27, 6559 (1994).Google Scholar
12. Thomas, E. L. and Talmon, Y., Polymer 19, 225 (1978).Google Scholar
13. Amundson, K. and Helfand, E., Macromolecules 26, 1324 (1993).Google Scholar
14. For PS, ε ≈ 2.45 ± 0.1 at 250°C. (Boyer, R. F., in Encyclopedia of Polymer Science and Technology. (Intersciences, New York, 1970), Vol. 13 pp 251–277.) For PMMA, ε ≈ 6 ± 1 at 250°C.,Google Scholar
(McCrum, N.G., Read, B. E., Williams, G., Anelastic and Dielectric Effects in Polymeric Solids (J. Wiley, New York, 1967) p. 264).Google Scholar