What question did this study set out to answer?

To investigate how temperature, polarizer angle, and alternating or direct electric fields influence the phase-transition dynamics and optical transmittance of the nematic liquid crystal C21H27NO2S.

April 1, 2009Canadian Journal of Physics

Optical properties of nematic liquid crystal (C21H27NO2S) under AC/DC electric fields

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Authors

MEMehriban EmekAdıyaman University NBNurettin BeșlıOffice of Energy Efficiency and Renewable Energy AYAhmet YıldırımSiirt Üniversitesi

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Implication

Electro-optical analysis demonstrates field-dependent transmittance shifts during phase transitions in a nematic liquid crystal, indicating domain-structure light scattering mechanisms.

Key Points

To investigate how temperature, polarizer angle, and alternating or direct electric fields influence the phase-transition dynamics and optical transmittance of the nematic liquid crystal C21H27NO2S.
Subjected 4′-isothiocyanatophenyl-4-pentylbicyclo[2,2,2]octane-1-carboxylate (C21H27NO2S) to variable AC and DC electric fields.
Measured optical transmittance as a function of temperature change and rotational angle of the polarizer during the crystal-nematic phase transition.
Application of electric fields shifted the crystal-nematic phase-transition temperature and altered the liquid crystal domain structure.
Transmitted light intensity increased continuously with increasing DC electric field strength.
Under an AC electric field at temperatures exceeding 355 K, transmitted light intensity initially increased before decreasing at higher field strengths due to domain-induced light scattering.

Cite This Study

Emek et al. (2009) studied this question.

synapsesocial.com/papers/6a70fe24f44fa9f079debf1f https://doi.org/10.1139/p09-030

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Implication

Electro-optical analysis demonstrates field-dependent transmittance shifts during phase transitions in a nematic liquid crystal, indicating domain-structure light scattering mechanisms.

Optical properties of nematic liquid crystal (C21H27NO2S) under AC/DC electric fields

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Implication

Key Points

Cite This Study

Optical properties of nematic liquid crystal (C21H27NO2S) under AC/DC electric fields

Discussion

Member takes

Implication

Key Points

Cite This Study

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