研究目的
Investigating the effects of refractive index properties of re?lled liquid crystals and environment temperature on re?ection properties of blue phase liquid crystal ?lms.
研究成果
The study demonstrated that re?lling BPLC templates with LCs of smaller birefringence and average refractive index results in narrower linewidth and better temperature insensitivity. The DYX8013 re?lled BPLC film showed the best performance, making it suitable for color re?ective displays and ?exible photonic devices.
研究不足
The study is limited to the specific liquid crystals and conditions tested. The effects of other LC materials or environmental factors were not explored.
1：Experimental Design and Method Selection:
The study involved fabricating blue phase liquid crystal (BPLC) films by re?lling different nematic liquid crystals into BPLC templates. The effects of birefringence and average refractive index on re?ection properties were investigated.
2：Sample Selection and Data Sources:
Three nematic liquid crystals (LCs-160324, HTG135200, and DYX8013) were used as re?llers. The refractive indices of these LCs were measured at different temperatures.
3：List of Experimental Equipment and Materials:
LC cells with ITO-coated glass substrates, UV light (365 nm, 20 mW), Abbe refractometer, and various liquid crystals and chiral dopants.
4：Experimental Procedures and Operational Workflow:
The BPLC templates were fabricated, washed, and re?lled with different LCs. The re?ection properties were then measured at various temperatures.
5：Data Analysis Methods:
The relationship between re?ection properties and LC refractive indices was analyzed, and temperature effects were studied.
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HTG135200
HCCH
Used as achiral nematic liquid crystal in the fabrication of blue phase liquid crystal templates.
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R5011
HCCH
Chiral dopant with helical twisting power (HTP) of 126/μm used in the mixture for fabricating blue phase liquid crystal templates.
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RM257
HCCH
Monomer used in the mixture for fabricating blue phase liquid crystal templates.
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TMPTA
HCCH
Monomer used in the mixture for fabricating blue phase liquid crystal templates.
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IRG184
HCCH
Photoinitiator used in the mixture for fabricating blue phase liquid crystal templates.
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LCs-160324
Xi’an Modern Chemistry Research Institute
Nematic liquid crystal used as a re?ller in BPLC films.
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DYX8013
Shijiazhuang Sdyano Fine Chemical
Nematic liquid crystal used as a re?ller in BPLC films.
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Abbe refractometer
Used to measure the refractive index of liquid crystals at different temperatures.
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