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Deformations induced by d.c. electric field in cholesteric liquid crystals

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Il Nuovo Cimento D

Summary

We report results of coupled capacitance and optical measurements made on a cholesteric mixture submitted to a d.c. electric field parallel to the helical axis. A definite hierarchy for the onset of different deformations is found if the sample thickness is much larger than the helical pitch. Three distinct thresholds are measured for sample thickness in the range 6 μm≤d≤100 μm.

Riassunto

Si riportano i risultati di misure accoppiate di capacità e di riflessione selettiva compiute su una miscela colesterica sottoposta ad un campo elettrico statico orientato parallelamente all'asse dell'elica. Si trova una ben definita sequenza dell'insorgere delle diverse deformazioni se lo spessore del campione è molto piú grande del passo dell'elica. Tre distinte soglie sono misurate per spessori compresi tra 6 μm e 100 μm.

Резюме

Мы приводим результаты связанных измерений емкости и селективного оптического отражения, проведенных на холестеричной смеси, помещенной в статическое злектрическое поле, параллельно спиральной оси. Получается определенная иерархия для появления различных деформаций, если толщина образца много больше, чем винтовой шаг. ъыли обнаружены три резко выраженных порога для толщин образцов в диапазоне 6 μm≤d≤100 μm.

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References

  1. Work partially supported by the Italian C.N.R.

  2. P. G. de Gennes:The Physics of Liquid Crystals (Oxford, 1975).

  3. P. G. de Gennes:Solid State Commun.,6, 163 (1968).

    Article  Google Scholar 

  4. R. B. Meyer:Appl. Phys. Lett.,12, 281 (1968).

    Article  Google Scholar 

  5. G. Durand, L. Leger, F. Rondelez andM. Veyssié:Phys. Rev. Lett.,22, 227 (1969).

    Article  ADS  Google Scholar 

  6. R. B. Mayer:Appl. Phys. Lett.,14, 208 (1969).

    Article  Google Scholar 

  7. W. Helfrich:J. Chem. Phys.,55, 839 (1971).

    Article  Google Scholar 

  8. J. P. Hurault:J. Chem. Phys.,59, 2068 (1973).

    Article  Google Scholar 

  9. F. Simoni, R. Bartolino andN. Scaramuzza:Chem. Phys.,11, 205 (1980).

    Google Scholar 

  10. Private communication.

  11. F. Rondelez: Thesis University Paris XI (Orsay, 1973).

  12. J. Hulin andF. Rondelez:Solid State Commun.,10, 1009 (1972).

    Article  Google Scholar 

  13. C. Williams: Thesis University Paris XI (Orsay, 1976).

Download references

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Authors and Affiliations

  1. Dipartimento di Fisica, Università della Calabria, Cosenza, Italia

    R. Bartolino, A. Ruffolo, F. Simoni, N. Scaramuzza & Unical L. C. Group

Authors
  1. R. Bartolino
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  2. A. Ruffolo
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  3. F. Simoni
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  4. N. Scaramuzza
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  5. Unical L. C. Group
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Bartolino, R., Ruffolo, A., Simoni, F. et al. Deformations induced by d.c. electric field in cholesteric liquid crystals. Il Nuovo Cimento D 1, 607–614 (1982). https://doi.org/10.1007/BF02453103

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  • DOI: https://doi.org/10.1007/BF02453103

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