Łukasz Duda

Research is underway to find organic dyes with high photoluminescence quantum yield (QY) and compatibility with liquid crystals (LCs) that would be suitable for application in LC systems such as...

New trends towards development of integrated optics and miniaturization of photonic devices require fabrication of miniaturized photonic components. Fabrication of waveguiding films with designed optical properties is a fundamental process for production of planar integrated devices. We report here preparation of thin layers based on TiO2 precursor...

Mixtures of nematic liquid crystals (LCs) with chiral ionic liquids (CILs) may find application as active materials for electrically driven broadband mirrors. Five nematic liquid crystal hosts were mixed with twenty three ionic liquids, including chiral ones, and studied in terms of their miscibility within the nematic phase. Phase diagrams of the...

Series of organic acids with various strength were mixed with chiral liquid crystalline 4-phenylpyridine derivative and tendency of these acid-base mixtures to form either intermolecular hydrogen-bonded associates or ionic systems was characterized basing on mid-infrared absorption spectroscopy. For this purpose several liquid crystalline 4-carboxy...

Four chiral dopants exhibiting smectic LC phases themselves were prepared and their helical twisting power (HTP) and thermal phase behaviour in mixtures with four various LC hosts were studied. The influence of host liquid crystal on HTP was evaluated and generally higher values were found for hosts with high birefringence. Unexpectedly, high enhan...