Investigations of optical and thermal response of polymer dispersed binary liquid crystals

Mani, Santosh A.; Amare, Jyoti R.; Hadkar, Sameer; Mishra, Krishnakant; Pradhan, Madhavi S.; Aljohani, Hind Abdullah; Sarawade, Pradip B.

doi:10.1080/15421406.2017.1287478

Cited by 12 publications

(5 citation statements)

References 18 publications

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“…These colorful images or textures are the fingerprints that help us identify the type of mesophase liquid crystal is in, thereby revealing phase transition temperatures. Each liquid crystal phase exhibits a distinct optical texture when viewed under polarizing microscopy [17,18]. Different images of Cholesteryl Pelargonate were captured for each phase during the heating and cooling cycles.…”

Section: Polarizing Microscopymentioning

confidence: 99%

Effect of Temperature and Concentration on the Physical Properties of Cholesteryl Pelargonate Near Transition Temperatures

Gajghate¹,

Kanwar²

2021

J. Sci. Res.

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Thermodynamic and acoustical study of cholesteric liquid crystal (CLC) was carried out near phase transition temperatures using an ultrasonic interferometer. The study of ultrasonic waves and related thermo-acoustical parameters provides information in understanding the nature of molecular interactions associated with liquid crystals. A statistical mechanical approach is used to calculate the viscosity of samples. The characteristic textures and phase transition temperatures are obtained with Polarizing Microscopy (POM). Fabry Perot scattering studies (FPSS) are used to ascertain the phase transition temperatures of CLC. The thermo-acoustical parameters have been calculated using experimental data with well-known formulae. The acoustical parameters show variation with temperature as well as with concentration of CLC. Anomalous behavior of these parameters is noticed at the clearing temperature of CLC. The variation of the parameters is explained in terms of solute-solvent molecular interactions in the solution. The molecular behavior, structural changes, and intermolecular interactions between CLC and solvent are discussed in detail.

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Section: Polarizing Microscopymentioning

confidence: 99%

Effect of Temperature and Concentration on the Physical Properties of Cholesteryl Pelargonate Near Transition Temperatures

Gajghate¹,

Kanwar²

2021

J. Sci. Res.

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“…Among the different kinds of LCs, cholesteric LC (CLC) is particularly important given its twisting structure with high one-dimensional (1D) periodic modulation of the refractive index. As a 1D photonic crystal (Liu Y.-S. et al, 2017 ; Mani et al, 2017 ), CLCs have a photonic band gap (PBG), which can control the propagation of light of different wavelengths. By dispersing laser dyes (such as PNCs) into the LC matrix, or building a nanostructure composed of laser dyes and LCs, and meanwhile adjusting the PBG to match the PBG edge overlaps with the emission spectrum of the dyes to maximize the coupling effect, a dye-doped liquid crystal laser can be prepared (Coles and Morris, 2010 ).…”

Section: Pncs: Liquid Crystals For Light Emission Applicationsmentioning

confidence: 99%

Synthesis of Perovskite Nanocrystals and Their Photon-Emission Application in Conjunction With Liquid Crystals

et al. 2020

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Perovskite nanocrystals have attracted worldwide attention due to their outstanding optical versatility, high photoluminescence quantum yields, and facile synthesis. In this review, we firstly revisit the synthetic methods for perovskite nanocrystals (PNCs), including hot injection, anion exchange, solvothermal reaction, etc. In the meantime, we discuss effects of the different synthetic methods on the properties of PNCs, including the crystal size, emission spectral feature, quantum yield, etc., followed by several optimizing strategies. Finally, lasing and display applications of these PNCs in combination with liquid crystal materials are discussed thoroughly. Outlooks on the challenges and opportunities of these nanocrystalline materials in terms of adjunct applications with liquid crystals have been presented at the end, which are highly promising for next-generation light emission applications.

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“…The ZnS is used to stabilize the optical properties whereas CdSe improves the performance. The CdSe and ZnS also show temperature-insensitive emission and high photostability [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35].…”

Section: Introductionmentioning

confidence: 99%

Impact of Quantum Dots on Refractive Index of Nematic Liquid Crystal Polymer System

Mishra,

Mani,

Hadkar

et al. 2023

MSF

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In the present study the effect of two quantum dots ZnS and CdSe on the Refractive Index of Nematic Liquid Crystal Polymer System (NLCPS) is investigated and compared. The measurement was performed for both the systems separately, using an Abbe Refractometer, within a temperature range of 20°C to 80°C with wavelengths in the visible spectrum. The refractive index with respect to temperature for various wavelengths was studied. We observed that the response of ZnS quantum dots dispersed in NLCPS was found to be better as compared to the CdSe system. This study may be useful for display and sensor applications.

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Investigations of optical and thermal response of polymer dispersed binary liquid crystals

Cited by 12 publications

References 18 publications

Effect of Temperature and Concentration on the Physical Properties of Cholesteryl Pelargonate Near Transition Temperatures

Effect of Temperature and Concentration on the Physical Properties of Cholesteryl Pelargonate Near Transition Temperatures

Synthesis of Perovskite Nanocrystals and Their Photon-Emission Application in Conjunction With Liquid Crystals

Impact of Quantum Dots on Refractive Index of Nematic Liquid Crystal Polymer System

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