Polarization sign inversion and smectic-A - smectic-C surface transitions in freely suspended films of fluorinated and nonfluorinated compounds

D. Schlauf; Ch Bahr; C. C. Huang; J. W. Goodby

doi:10.1080/00150199808217369

Polarization sign inversion and smectic-A - smectic-C surface transitions in freely suspended films of fluorinated and nonfluorinated compounds

D. Schlauf
, Ch Bahr
, C. C. Huang
, J. W. Goodby

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Conference article › peer-review

1 Scopus citations

Abstract

We report ellipsometric measurements on freely suspended films of chiral liquid-crystal compounds near their smectic-A - smectic-C transition. The temperature difference between the surface and the bulk transition is found to vary considerably within a homologous series. In two compounds possessing a fluorinated alkyl chain an unexpected sign inversion of the spontaneous polarization in the ferroelectric smectic-C phase is observed which occurs only in thin but not in thick films.

Original language	English (US)
Pages (from-to)	221-229
Number of pages	9
Journal	Ferroelectrics
Volume	212
Issue number	1-4
DOIs	https://doi.org/10.1080/00150199808217369
State	Published - 1998
Event	Proceedings of the 1997 6th International Conference on Ferroelectrics Liquid Crystals. Part 1 (of 3) - Brest, Fr Duration: Jul 20 1997 → Jul 24 1997

Bibliographical note

Funding Information:
This work was supported in part by the Deutsche Forschungsgemein-schaft (grant no. Ba1048/5-l), the Fonds der Chemischen Industrie, and National Science Foundation, Solid State Chemistry Program, (grant no. DMR-93-00781). Ch. B. is grateful to the Deutsche Forschungsgemein-schaft for a Heisenberg-Fellowship. We would like to thank Dr. G. Janulis (3M Corporation, St. Paul, MN) for providing the fluorinated 'compounds.

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title = "Polarization sign inversion and smectic-A - smectic-C surface transitions in freely suspended films of fluorinated and nonfluorinated compounds",

abstract = "We report ellipsometric measurements on freely suspended films of chiral liquid-crystal compounds near their smectic-A - smectic-C transition. The temperature difference between the surface and the bulk transition is found to vary considerably within a homologous series. In two compounds possessing a fluorinated alkyl chain an unexpected sign inversion of the spontaneous polarization in the ferroelectric smectic-C phase is observed which occurs only in thin but not in thick films.",

author = "D. Schlauf and Ch Bahr and Huang, \{C. C.\} and Goodby, \{J. W.\}",

note = "Funding Information: This work was supported in part by the Deutsche Forschungsgemein-schaft (grant no. Ba1048/5-l), the Fonds der Chemischen Industrie, and National Science Foundation, Solid State Chemistry Program, (grant no. DMR-93-00781). Ch. B. is grateful to the Deutsche Forschungsgemein-schaft for a Heisenberg-Fellowship. We would like to thank Dr. G. Janulis (3M Corporation, St. Paul, MN) for providing the fluorinated 'compounds.; Proceedings of the 1997 6th International Conference on Ferroelectrics Liquid Crystals. Part 1 (of 3) ; Conference date: 20-07-1997 Through 24-07-1997",

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doi = "10.1080/00150199808217369",

language = "English (US)",

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TY - JOUR

T1 - Polarization sign inversion and smectic-A - smectic-C surface transitions in freely suspended films of fluorinated and nonfluorinated compounds

AU - Schlauf, D.

AU - Bahr, Ch

AU - Huang, C. C.

AU - Goodby, J. W.

N1 - Funding Information: This work was supported in part by the Deutsche Forschungsgemein-schaft (grant no. Ba1048/5-l), the Fonds der Chemischen Industrie, and National Science Foundation, Solid State Chemistry Program, (grant no. DMR-93-00781). Ch. B. is grateful to the Deutsche Forschungsgemein-schaft for a Heisenberg-Fellowship. We would like to thank Dr. G. Janulis (3M Corporation, St. Paul, MN) for providing the fluorinated 'compounds.

PY - 1998

Y1 - 1998

N2 - We report ellipsometric measurements on freely suspended films of chiral liquid-crystal compounds near their smectic-A - smectic-C transition. The temperature difference between the surface and the bulk transition is found to vary considerably within a homologous series. In two compounds possessing a fluorinated alkyl chain an unexpected sign inversion of the spontaneous polarization in the ferroelectric smectic-C phase is observed which occurs only in thin but not in thick films.

AB - We report ellipsometric measurements on freely suspended films of chiral liquid-crystal compounds near their smectic-A - smectic-C transition. The temperature difference between the surface and the bulk transition is found to vary considerably within a homologous series. In two compounds possessing a fluorinated alkyl chain an unexpected sign inversion of the spontaneous polarization in the ferroelectric smectic-C phase is observed which occurs only in thin but not in thick films.

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U2 - 10.1080/00150199808217369

DO - 10.1080/00150199808217369

M3 - Conference article

AN - SCOPUS:0031645427

SN - 0015-0193

VL - 212

SP - 221

EP - 229

JO - Ferroelectrics

JF - Ferroelectrics

IS - 1-4

T2 - Proceedings of the 1997 6th International Conference on Ferroelectrics Liquid Crystals. Part 1 (of 3)

Y2 - 20 July 1997 through 24 July 1997

ER -

Polarization sign inversion and smectic-A - smectic-C surface transitions in freely suspended films of fluorinated and nonfluorinated compounds

Abstract

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