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30 September 2024 Thermal and electric field effects on the nonlinear optical response of liquid crystals doped with carbon quantum dots
Italo de Oliveira
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Proceedings Volume PC13121, Liquid Crystals XXVIII; PC131210M (2024) https://doi.org/10.1117/12.3028137
Event: Organic Photonics + Electronics, 2024, San Diego, California, United States
Abstract
The present study investigates the nonlinear optical response of a cyanobiphenyl liquid crystal (8CB) doped with carbon dots derived from dansyl chloride (CD-DsCl). Using the time-resolved z-scan technique, it is investigated how the CD-DsCl addition affects the nonlinear refractive coefficient of planar liquid crystal samples. The temperature dependence of nonlinear optical responses of pristine and doped samples are analyzed close to smectic-A - nematic and nematic - isotropic phase transitions. Furthermore, the effects of an external electric field are analyzed. Our results show that doped 8CB samples may exhibit an enhanced nonlinear optical response, which depends on the strength of the external field.
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Italo de Oliveira "Thermal and electric field effects on the nonlinear optical response of liquid crystals doped with carbon quantum dots", Proc. SPIE PC13121, Liquid Crystals XXVIII, PC131210M (30 September 2024); https://doi.org/10.1117/12.3028137
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KEYWORDS
Liquid crystals
Carbon dots
Carbon
Electroluminescent displays
Optical properties
Quantum dots
Birefringence
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