선택한 단어 수는 입니다.
최소 단어 이상 선택하여야 합니다.
최소 단어 이상 선택하여야 합니다.
선택한 단어 수는 30입니다.
최대 10 단어까지만 선택 가능합니다.
최대 10 단어까지만 선택 가능합니다.
제안 방법
- The two orientational states were confirmed by the orientation of the William domains. Ellipsometric measurements were carried out to determine the deviation from the X and YZ states. With regard to the twisted-homogeneous bistable cell, the twist angle was measured using the extinction angle method.
- For the twisted-homogeneous bistable cell, the NLC substance with a negative dielectric anisotropy that was used in this experiment was MBBA with a 15μm nominal cell gap, and the NLC substances with a positive dielectric anisotropy that were used were 5CB (Merck) and ZLI-2293 (Merck) with a 5μm nominal cell gap. For the bistable HAN cell, the NLC substance with a negative dielectric anisotropy that was used in this experiment was MBBA, and the NLC substance with a positive dielectric anisotropy that was used was ZLI-2293 (Merck). The cells were filled with NLCs by capillary action in the isotropic phase and were gradually cooled to room temperature.
- For the twisted-homogeneous bistable cell, the NLC substance with a negative dielectric anisotropy that was used in this experiment was MBBA with a 15μm nominal cell gap, and the NLC substances with a positive dielectric anisotropy that were used were 5CB (Merck) and ZLI-2293 (Merck) with a 5μm nominal cell gap.
- First, the orientation of the bistable models was observed and confirmed under a polarizing optical microscope (POM; Nikon) after being employed with several types of LC substances. Then the alignment properties of the bistable models, such as the twist angle and the pretilt angle, were measured. Lastly, the switching behavior and the memory effect of the bistable model by means of the vertical field effect were observed, and the new states were found to have been memorized after the occurrence of the applied vertical field effect.
대상 데이터
- The NLC substance that was used for this experiment was 5CB (5 μm).
이론/모형
- By comparing the values of phase difference △ and angle of amplitude ratio ψ measured with a transmission spectroscopic ellipsometer, with the theoretical calculation done using the Berreman 4 × 4 matrix method, the pretilt angle at the upper substrate (rubbing substrate) and lower substrate (patterned substrate) were determined to be 2◦ and 13◦, respectively.
- The incident angles were 0◦ and 30◦. For the theoretical calculation, the twist angle measured through the extinction angle method and the cell gap measured outside the spot area (HAN orientation) through the fitting method were used.
- Moreover, the pretilt angle was estimated by comparing the ellipsometric results of phase difference △ and angle of amplitude ratio ψ, with the theoretical calculation done using the Berreman 4 × 4 matrix method.
- Theoretical calculation was performed using the Berreman 4 × 4 matrix method [28].
- Ellipsometric measurements were carried out to determine the deviation from the X and YZ states. With regard to the twisted-homogeneous bistable cell, the twist angle was measured using the extinction angle method. Moreover, the pretilt angle was estimated by comparing the ellipsometric results of phase difference △ and angle of amplitude ratio ψ, with the theoretical calculation done using the Berreman 4 × 4 matrix method.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.