Stable ordering in Langmuir-Blodgett films

D. Y. Takamoto, E. Aydil, J. A. Zasadzinski, A. T. Ivanova, D. K. Schwartz, T. Yang, P. S. Cremer

Research output: Contribution to journalArticle

88 Scopus citations

Abstract

Defects in the layering of Langmuir-Blodgett (LB) films can be eliminated by depositing from the appropriate monolayer phase at the air-water interface. LB films deposited from the hexagonal phase of cadmium arachidate (CdA2) at pH 7 spontaneously transform into the bulk soap structure, a centrosymmetric bilayer with an orthorhombic herringbone packing. A large wavelength folding mechanism accelerates the conversion between the two structures, leading to a disruption of the desired layering. At pH > 8.5, though it is more difficult to draw LB films, almost perfect layering is obtained due to the inability to convert from the as-deposited structure to the equilibrium one.

Original languageEnglish (US)
Pages (from-to)1292-1295
Number of pages4
JournalScience
Volume293
Issue number5533
DOIs
Publication statusPublished - Aug 17 2001

    Fingerprint

All Science Journal Classification (ASJC) codes

  • General

Cite this

Takamoto, D. Y., Aydil, E., Zasadzinski, J. A., Ivanova, A. T., Schwartz, D. K., Yang, T., & Cremer, P. S. (2001). Stable ordering in Langmuir-Blodgett films. Science, 293(5533), 1292-1295. https://doi.org/10.1126/science.1060018