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Study of the SmC alpha(*) phase in the Tokyo mixture by conoscopy using tilted cell

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Study of the SmC alpha(*) phase in the Tokyo mixture by conoscopy using tilted cell. / Song, Jangkun; Chandani, A. D. L.; Panarina, O. E. et al.
In: Ferroelectrics, Vol. 344, No. 1, 2006, p. 285-291.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Song, J, Chandani, ADL, Panarina, OE, Fukuda, A, Vij, JK, Goertz, V & Goodby, JW 2006, 'Study of the SmC alpha(*) phase in the Tokyo mixture by conoscopy using tilted cell', Ferroelectrics, vol. 344, no. 1, pp. 285-291. https://doi.org/10.1080/00150190600966813

APA

Song, J., Chandani, A. D. L., Panarina, O. E., Fukuda, A., Vij, J. K., Goertz, V., & Goodby, J. W. (2006). Study of the SmC alpha(*) phase in the Tokyo mixture by conoscopy using tilted cell. Ferroelectrics, 344(1), 285-291. https://doi.org/10.1080/00150190600966813

Vancouver

Song J, Chandani ADL, Panarina OE, Fukuda A, Vij JK, Goertz V et al. Study of the SmC alpha(*) phase in the Tokyo mixture by conoscopy using tilted cell. Ferroelectrics. 2006;344(1):285-291. doi: 10.1080/00150190600966813

Author

Song, Jangkun ; Chandani, A. D. L. ; Panarina, O. E. et al. / Study of the SmC alpha(*) phase in the Tokyo mixture by conoscopy using tilted cell. In: Ferroelectrics. 2006 ; Vol. 344, No. 1. pp. 285-291.

Bibtex

@article{7ab943b75be44f2eaadece938502a223,
title = "Study of the SmC alpha(*) phase in the Tokyo mixture by conoscopy using tilted cell",
abstract = "We observed the existence of the SmC*(alpha) phase in the so-called Tokyo mixture, which has been used for studying V-shape switching by a number of research groups. Conoscopic observations, birefringence measurements using a set-up that employs a photo elastic modulator (PEM) and dielectric measurement were used for studying the behavior of the SmC*(alpha) phase. In particular, a conoscopic method using tilted cells was used to observe the conoscopy of the large tilt angle phase. We found that the tilted conoscopic method is very useful for analyzing large tilt smectic phases. The SmC alpha* phase was observed in a narrow temperature range from 63.0 degrees C to 63.4 degrees C. This is the first report of an observation of this phase in the Tokyo Mixture. It showed uniaxiality at low voltage but changed to biaxiality parallel to the electric field at high voltage in the conoscopic experiment. The absolute value of the biaxiality was quite high, up to 0.003, which means that the unwinding process of SmC*(alpha) is different from that of SmC*. This high parallel biaxiality implies the emergence of ferri-like structure, that is, co-existence of synclinic order and anticlinic order, during the field induced unwinding process.",
keywords = "SmCa* phase, V-shape mode switching, Tokyo mixture, ALPHA-ASTERISK PHASE, LIQUID-CRYSTAL, THRESHOLDLESS ANTIFERROELECTRICITY",
author = "Jangkun Song and Chandani, {A. D. L.} and Panarina, {O. E.} and Atsuo Fukuda and Vij, {Jagdish K.} and V. Goertz and Goodby, {J. W.}",
year = "2006",
doi = "10.1080/00150190600966813",
language = "English",
volume = "344",
pages = "285--291",
journal = "Ferroelectrics",
issn = "0015-0193",
publisher = "Taylor and Francis Ltd.",
number = "1",
note = "10th Conference on Ferroelectric Liquid Crystals ; Conference date: 12-09-2005 Through 17-09-2005",

}

RIS

TY - JOUR

T1 - Study of the SmC alpha(*) phase in the Tokyo mixture by conoscopy using tilted cell

AU - Song, Jangkun

AU - Chandani, A. D. L.

AU - Panarina, O. E.

AU - Fukuda, Atsuo

AU - Vij, Jagdish K.

AU - Goertz, V.

AU - Goodby, J. W.

PY - 2006

Y1 - 2006

N2 - We observed the existence of the SmC*(alpha) phase in the so-called Tokyo mixture, which has been used for studying V-shape switching by a number of research groups. Conoscopic observations, birefringence measurements using a set-up that employs a photo elastic modulator (PEM) and dielectric measurement were used for studying the behavior of the SmC*(alpha) phase. In particular, a conoscopic method using tilted cells was used to observe the conoscopy of the large tilt angle phase. We found that the tilted conoscopic method is very useful for analyzing large tilt smectic phases. The SmC alpha* phase was observed in a narrow temperature range from 63.0 degrees C to 63.4 degrees C. This is the first report of an observation of this phase in the Tokyo Mixture. It showed uniaxiality at low voltage but changed to biaxiality parallel to the electric field at high voltage in the conoscopic experiment. The absolute value of the biaxiality was quite high, up to 0.003, which means that the unwinding process of SmC*(alpha) is different from that of SmC*. This high parallel biaxiality implies the emergence of ferri-like structure, that is, co-existence of synclinic order and anticlinic order, during the field induced unwinding process.

AB - We observed the existence of the SmC*(alpha) phase in the so-called Tokyo mixture, which has been used for studying V-shape switching by a number of research groups. Conoscopic observations, birefringence measurements using a set-up that employs a photo elastic modulator (PEM) and dielectric measurement were used for studying the behavior of the SmC*(alpha) phase. In particular, a conoscopic method using tilted cells was used to observe the conoscopy of the large tilt angle phase. We found that the tilted conoscopic method is very useful for analyzing large tilt smectic phases. The SmC alpha* phase was observed in a narrow temperature range from 63.0 degrees C to 63.4 degrees C. This is the first report of an observation of this phase in the Tokyo Mixture. It showed uniaxiality at low voltage but changed to biaxiality parallel to the electric field at high voltage in the conoscopic experiment. The absolute value of the biaxiality was quite high, up to 0.003, which means that the unwinding process of SmC*(alpha) is different from that of SmC*. This high parallel biaxiality implies the emergence of ferri-like structure, that is, co-existence of synclinic order and anticlinic order, during the field induced unwinding process.

KW - SmCa phase

KW - V-shape mode switching

KW - Tokyo mixture

KW - ALPHA-ASTERISK PHASE

KW - LIQUID-CRYSTAL

KW - THRESHOLDLESS ANTIFERROELECTRICITY

U2 - 10.1080/00150190600966813

DO - 10.1080/00150190600966813

M3 - Journal article

VL - 344

SP - 285

EP - 291

JO - Ferroelectrics

JF - Ferroelectrics

SN - 0015-0193

IS - 1

T2 - 10th Conference on Ferroelectric Liquid Crystals

Y2 - 12 September 2005 through 17 September 2005

ER -