Abstract

An electrooptic effect in the blue phase of the cholesteric mixture S811 and the nematic mixture N5 is reported. To demonstrate this effect ac voltages (f = 1000 Hz) between 0 and 150 V were applied. Wavelength shifts of 70 nm were obtained.

© 1985 Optical Society of America

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References

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  1. H. Stegemeyer, K. Bergmann, “Experimental Results and Problems Concerning Blue Phases,” Springer Series Chem. Phys. 11, 161 (1980).
    [CrossRef]
  2. O. Lehmann, “Stoffe mit drei flussigen Zustanden, einem isotropund zwei kristallinisch-flussigen,” Z. Phys. Chem. 56, 750 (1906).
  3. S. A. Brazovskii, “Phase Transition of an Isotropic System to a Nonuniform State,” Sov. Phys. JETP 41, 85 (1975).
  4. S. Meiboom, M. Sammon, W. F. Brinkman, “A Lattice of Disclinations: the Structure of the Blue Phases of Cholesteric Liquid Crystals,” Phys. Rev. A 27, 438 (1983).
    [CrossRef]
  5. H. Grebel, R. M. Hornreich, S. Shtrikman, “Landau Theory of Cholesteric Blue Phases,” Phys. Rev. A 28, 1114 (1983).
    [CrossRef]
  6. K. Bergmann, H. Stegemeyer, “Evidence for Polymorphism Within the So-Called Blue Phase of Cholesteric Esters. IV. Temperature and Angular Dependence of Selective Reflection,” Z. Naturforsch. Teil A 34, 1031 (1979).
  7. D. L. Johnson, J. H. Flack, P. P. Crooker, “Structure and Properties of the Cholesteric Blue Phases,” Phys. Rev. Lett. 45, 641 (1980).
    [CrossRef]
  8. P. G. de Gennes, The Physics of Liquid Crystals (Clarendon, Oxford, 1974).
  9. D. Armitage, F. P. Price, “Calorimetry of Liquid Crystal Phase Transitions,” J. Phys. París 36, Cl-133 (1975).
  10. B. M. León Fong, J. A. Martín-Pereda, G. Heppke, H. S. Kitzerow, F. Oestreicher, “Phasendiagramme einiger chiral-racemischer ‘Blue Phase’-Systeme,” communication presented at the Twenty-First Bunsen-Colloquium on Material Properties and Order States in Liquid crystals, Berlin (Sept. 1983).
  11. P. L. Finn, P. E. Cladis, “Cholestric Blue Phases in Mixtures and in an Electric Field,” Mol. Cryst. Liq. Cryst. 84, 159 (1982).
    [CrossRef]

1983

S. Meiboom, M. Sammon, W. F. Brinkman, “A Lattice of Disclinations: the Structure of the Blue Phases of Cholesteric Liquid Crystals,” Phys. Rev. A 27, 438 (1983).
[CrossRef]

H. Grebel, R. M. Hornreich, S. Shtrikman, “Landau Theory of Cholesteric Blue Phases,” Phys. Rev. A 28, 1114 (1983).
[CrossRef]

1982

P. L. Finn, P. E. Cladis, “Cholestric Blue Phases in Mixtures and in an Electric Field,” Mol. Cryst. Liq. Cryst. 84, 159 (1982).
[CrossRef]

1980

D. L. Johnson, J. H. Flack, P. P. Crooker, “Structure and Properties of the Cholesteric Blue Phases,” Phys. Rev. Lett. 45, 641 (1980).
[CrossRef]

H. Stegemeyer, K. Bergmann, “Experimental Results and Problems Concerning Blue Phases,” Springer Series Chem. Phys. 11, 161 (1980).
[CrossRef]

1979

K. Bergmann, H. Stegemeyer, “Evidence for Polymorphism Within the So-Called Blue Phase of Cholesteric Esters. IV. Temperature and Angular Dependence of Selective Reflection,” Z. Naturforsch. Teil A 34, 1031 (1979).

1975

D. Armitage, F. P. Price, “Calorimetry of Liquid Crystal Phase Transitions,” J. Phys. París 36, Cl-133 (1975).

S. A. Brazovskii, “Phase Transition of an Isotropic System to a Nonuniform State,” Sov. Phys. JETP 41, 85 (1975).

1906

O. Lehmann, “Stoffe mit drei flussigen Zustanden, einem isotropund zwei kristallinisch-flussigen,” Z. Phys. Chem. 56, 750 (1906).

Armitage, D.

D. Armitage, F. P. Price, “Calorimetry of Liquid Crystal Phase Transitions,” J. Phys. París 36, Cl-133 (1975).

Bergmann, K.

H. Stegemeyer, K. Bergmann, “Experimental Results and Problems Concerning Blue Phases,” Springer Series Chem. Phys. 11, 161 (1980).
[CrossRef]

K. Bergmann, H. Stegemeyer, “Evidence for Polymorphism Within the So-Called Blue Phase of Cholesteric Esters. IV. Temperature and Angular Dependence of Selective Reflection,” Z. Naturforsch. Teil A 34, 1031 (1979).

Brazovskii, S. A.

S. A. Brazovskii, “Phase Transition of an Isotropic System to a Nonuniform State,” Sov. Phys. JETP 41, 85 (1975).

Brinkman, W. F.

S. Meiboom, M. Sammon, W. F. Brinkman, “A Lattice of Disclinations: the Structure of the Blue Phases of Cholesteric Liquid Crystals,” Phys. Rev. A 27, 438 (1983).
[CrossRef]

Cladis, P. E.

P. L. Finn, P. E. Cladis, “Cholestric Blue Phases in Mixtures and in an Electric Field,” Mol. Cryst. Liq. Cryst. 84, 159 (1982).
[CrossRef]

Crooker, P. P.

D. L. Johnson, J. H. Flack, P. P. Crooker, “Structure and Properties of the Cholesteric Blue Phases,” Phys. Rev. Lett. 45, 641 (1980).
[CrossRef]

de Gennes, P. G.

P. G. de Gennes, The Physics of Liquid Crystals (Clarendon, Oxford, 1974).

Finn, P. L.

P. L. Finn, P. E. Cladis, “Cholestric Blue Phases in Mixtures and in an Electric Field,” Mol. Cryst. Liq. Cryst. 84, 159 (1982).
[CrossRef]

Flack, J. H.

D. L. Johnson, J. H. Flack, P. P. Crooker, “Structure and Properties of the Cholesteric Blue Phases,” Phys. Rev. Lett. 45, 641 (1980).
[CrossRef]

Grebel, H.

H. Grebel, R. M. Hornreich, S. Shtrikman, “Landau Theory of Cholesteric Blue Phases,” Phys. Rev. A 28, 1114 (1983).
[CrossRef]

Heppke, G.

B. M. León Fong, J. A. Martín-Pereda, G. Heppke, H. S. Kitzerow, F. Oestreicher, “Phasendiagramme einiger chiral-racemischer ‘Blue Phase’-Systeme,” communication presented at the Twenty-First Bunsen-Colloquium on Material Properties and Order States in Liquid crystals, Berlin (Sept. 1983).

Hornreich, R. M.

H. Grebel, R. M. Hornreich, S. Shtrikman, “Landau Theory of Cholesteric Blue Phases,” Phys. Rev. A 28, 1114 (1983).
[CrossRef]

Johnson, D. L.

D. L. Johnson, J. H. Flack, P. P. Crooker, “Structure and Properties of the Cholesteric Blue Phases,” Phys. Rev. Lett. 45, 641 (1980).
[CrossRef]

Kitzerow, H. S.

B. M. León Fong, J. A. Martín-Pereda, G. Heppke, H. S. Kitzerow, F. Oestreicher, “Phasendiagramme einiger chiral-racemischer ‘Blue Phase’-Systeme,” communication presented at the Twenty-First Bunsen-Colloquium on Material Properties and Order States in Liquid crystals, Berlin (Sept. 1983).

Lehmann, O.

O. Lehmann, “Stoffe mit drei flussigen Zustanden, einem isotropund zwei kristallinisch-flussigen,” Z. Phys. Chem. 56, 750 (1906).

León Fong, B. M.

B. M. León Fong, J. A. Martín-Pereda, G. Heppke, H. S. Kitzerow, F. Oestreicher, “Phasendiagramme einiger chiral-racemischer ‘Blue Phase’-Systeme,” communication presented at the Twenty-First Bunsen-Colloquium on Material Properties and Order States in Liquid crystals, Berlin (Sept. 1983).

Martín-Pereda, J. A.

B. M. León Fong, J. A. Martín-Pereda, G. Heppke, H. S. Kitzerow, F. Oestreicher, “Phasendiagramme einiger chiral-racemischer ‘Blue Phase’-Systeme,” communication presented at the Twenty-First Bunsen-Colloquium on Material Properties and Order States in Liquid crystals, Berlin (Sept. 1983).

Meiboom, S.

S. Meiboom, M. Sammon, W. F. Brinkman, “A Lattice of Disclinations: the Structure of the Blue Phases of Cholesteric Liquid Crystals,” Phys. Rev. A 27, 438 (1983).
[CrossRef]

Oestreicher, F.

B. M. León Fong, J. A. Martín-Pereda, G. Heppke, H. S. Kitzerow, F. Oestreicher, “Phasendiagramme einiger chiral-racemischer ‘Blue Phase’-Systeme,” communication presented at the Twenty-First Bunsen-Colloquium on Material Properties and Order States in Liquid crystals, Berlin (Sept. 1983).

Price, F. P.

D. Armitage, F. P. Price, “Calorimetry of Liquid Crystal Phase Transitions,” J. Phys. París 36, Cl-133 (1975).

Sammon, M.

S. Meiboom, M. Sammon, W. F. Brinkman, “A Lattice of Disclinations: the Structure of the Blue Phases of Cholesteric Liquid Crystals,” Phys. Rev. A 27, 438 (1983).
[CrossRef]

Shtrikman, S.

H. Grebel, R. M. Hornreich, S. Shtrikman, “Landau Theory of Cholesteric Blue Phases,” Phys. Rev. A 28, 1114 (1983).
[CrossRef]

Stegemeyer, H.

H. Stegemeyer, K. Bergmann, “Experimental Results and Problems Concerning Blue Phases,” Springer Series Chem. Phys. 11, 161 (1980).
[CrossRef]

K. Bergmann, H. Stegemeyer, “Evidence for Polymorphism Within the So-Called Blue Phase of Cholesteric Esters. IV. Temperature and Angular Dependence of Selective Reflection,” Z. Naturforsch. Teil A 34, 1031 (1979).

J. Phys. París

D. Armitage, F. P. Price, “Calorimetry of Liquid Crystal Phase Transitions,” J. Phys. París 36, Cl-133 (1975).

Mol. Cryst. Liq. Cryst.

P. L. Finn, P. E. Cladis, “Cholestric Blue Phases in Mixtures and in an Electric Field,” Mol. Cryst. Liq. Cryst. 84, 159 (1982).
[CrossRef]

Phys. Rev. A

S. Meiboom, M. Sammon, W. F. Brinkman, “A Lattice of Disclinations: the Structure of the Blue Phases of Cholesteric Liquid Crystals,” Phys. Rev. A 27, 438 (1983).
[CrossRef]

H. Grebel, R. M. Hornreich, S. Shtrikman, “Landau Theory of Cholesteric Blue Phases,” Phys. Rev. A 28, 1114 (1983).
[CrossRef]

Phys. Rev. Lett.

D. L. Johnson, J. H. Flack, P. P. Crooker, “Structure and Properties of the Cholesteric Blue Phases,” Phys. Rev. Lett. 45, 641 (1980).
[CrossRef]

Sov. Phys. JETP

S. A. Brazovskii, “Phase Transition of an Isotropic System to a Nonuniform State,” Sov. Phys. JETP 41, 85 (1975).

Springer Series Chem. Phys.

H. Stegemeyer, K. Bergmann, “Experimental Results and Problems Concerning Blue Phases,” Springer Series Chem. Phys. 11, 161 (1980).
[CrossRef]

Z. Naturforsch. Teil A

K. Bergmann, H. Stegemeyer, “Evidence for Polymorphism Within the So-Called Blue Phase of Cholesteric Esters. IV. Temperature and Angular Dependence of Selective Reflection,” Z. Naturforsch. Teil A 34, 1031 (1979).

Z. Phys. Chem.

O. Lehmann, “Stoffe mit drei flussigen Zustanden, einem isotropund zwei kristallinisch-flussigen,” Z. Phys. Chem. 56, 750 (1906).

Other

P. G. de Gennes, The Physics of Liquid Crystals (Clarendon, Oxford, 1974).

B. M. León Fong, J. A. Martín-Pereda, G. Heppke, H. S. Kitzerow, F. Oestreicher, “Phasendiagramme einiger chiral-racemischer ‘Blue Phase’-Systeme,” communication presented at the Twenty-First Bunsen-Colloquium on Material Properties and Order States in Liquid crystals, Berlin (Sept. 1983).

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Figures (7)

Fig. 1
Fig. 1

Reflection spectra for different temperatures.

Fig. 2
Fig. 2

Blue phase II quadratic domain.

Fig. 3
Fig. 3

Reflective maxima position as a function of the temperature. The different types of point belong to different measurement runs.

Fig. 4
Fig. 4

Electrooptic effect of the BP II. The reflective maximum shifts to larger wavelengths by application of an electric field.

Fig. 5
Fig. 5

Partial switching from BP II to BP I by application of an electric field.

Fig. 6
Fig. 6

Shift of the BP I maximum to a larger wavelength and induction of the cholesteric phase by application of an electric field.

Fig. 7
Fig. 7

Maxima positions as a function of the applied voltage for different temperatures.

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