Liquid crystalline materials

Ebook "Thermotropic liquid crystal polymers: Thin-film polymerization, characterization, blends, and applications" covers a wide range of topics and addresses different disciplines in the field. The chapters are arranged as a learning scheme for the professional, from basic science to applied engineering. The first few chapters summarize the syntheses of various polyester, polyester-amid, and polyimide liquid crystalline polymers.

357p coduathanh1122 27-03-2024 3 1   Download

Ebook "Liquid crystal elastomers: Materials and applications" attempts to cover many of the aspects mentioned above. The first two chapters have a strong background in chemistry. The quest for responsive materials with the ability to mimic living systems is one of the major challenges for future polymeric materials. This requires a high level of mobility combined with shape retention.

244p nhanphanguyet 28-01-2024 6 2   Download

Part 1 of ebook "Fundamentals of condensed matter and crystalline physics: An introduction for students of physics and materials science" provides readers with contents including: crystal structure; amorphous structure; bonds and cohesion; magnetic structure; scattering theory; scattering by crystals; scattering by amorphous matter; self-similar structures and liquid crystals;...

157p dangsovu 20-10-2023 3 3   Download

Continued part 1, part 2 of ebook "Fundamentals of condensed matter and crystalline physics: An introduction for students of physics and materials science" provides readers with contents including: liquid dynamics; crystal vibrations; thermal properties; electrons - the free electron model; electrons - band theory; bulk dynamics and response; introduction to phase transitions; percolation theory; mean field theory and renormalization;...

262p dangsovu 20-10-2023 4 3   Download

In this research, Molecular Dynamics (MD) simulations were conducted to explore the temperature effect on the microstructure and phase transition of the Ag0.25Au0.75 alloy. The findings reveal that as the temperature rises, the material's phase transition switches from crystalline to liquid and vice versa.

9p visharma 20-10-2023 3 3   Download

Novel hexakisurea and thiourea cyclotriphosphazene compounds (3–7) were synthesized. The structure of all compounds was identified using FT-IR 1H, 13C, and 31P NMR spectroscopy; MALDI-TOF MS; and elemental analysis. The optical sensor properties for anions of 3–7 were investigated using UV-Vis spectroscopy. It was determined that compounds 6 and 7 are spectrophotometric and naked eye sensors for F− and CN− anions, respectively. Sensor properties of these compounds for anions were investigated using UV-Vis spectroscopy. The stoichiometry of host–guest complexes was found to be 1:6.

12p langthannam 29-12-2021 9 0   Download

We report the synthesis and liquid crystalline properties of a new type of tribranched compound built up from triazine as the central core and electron-rich triazine rings as peripheral groups. An equimolar mixture of the star-shaped compound based on the 1,3,5-triazine core with 4-dodecyloxybenzoic acid produced an organic salt exhibiting a columnar mesophase with a dendritic growing texture at low temperatures. The liquid crystalline properties of the triazine-based compound and organic salt were investigated by differential scanning calorimetry and polarizing optical microscopy.

9p tudichquannguyet 29-11-2021 3 1   Download

We characterized their shape and morphology using transmission electron microscopy (TEM), and confirmed their crystalline structure with X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) in combination with energy-dispersive X-ray spectroscopy (EDX) elemental mapping.

9p tamynhan4 06-09-2020 11 1   Download

Се-doped (Pb,Gd)3(Al,Ga)5O12 single crystalline garnet films were grown using liquid-phase epitaxy from four series of supercooled PbOeB2O3-based melt solutions on Gd3Ga5O12 and Gd3Al2.26Ga2.74O12 single crystal substrates. This study reports the optical and scintillation properties of (Pb,Gd)3(Al,Ga)5O12:Се films grown via LPE from supercooled PbOeB2O3-based melt solutions.

9p tamynhan4 06-09-2020 10 2   Download

Polyurethane [PU] is a class of polymers built up of carabamate linkages, which provide special characteristics to the material. It is the outcome of pioneering research work of Otto Bayer and his coworkers in 1937 at I.G. Farben laboratories, in Leverkusen, Germany. Initial PU consisted of foams and fibres, while today, innovations and researches in the past decades have brought colossal changes in the world of PU.

480p greengrass304 18-09-2012 117 35   Download