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Biogenic Crystals Research Group
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- Investigations of nucleation and growth processes of struvite in relation to infectious urinary stones formation
- Investigations of physical mechanisms of nucleation, growth and aggregation of carbonate apatite and struvite in relations to the infectious urinary Stones and investigations of an influence of substances able to modulate of these processes
- Biomineralisation of plants
- Infectious urinary stones
- Evolution of crystal morphology
- Early phases of nucleation
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Quantum Chemistry Group
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- Accurate description of intermolecular interaction energies from extended random phase approximation
- Development of a method of calculating the excitation energies of atoms and molecules based on the ensemble variational principle
- Development of new methods for quantum-chemical embedding based on reduced density matrices
- Development of new electronic structure methods for intermolecular interactions in multireference systems
- Description of intermolecular interactions in excited states.
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- Liquid Crystals Physics Group
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Liquid Crystals Physics Group
My studies concern one- and two-dimensional deformations of director field as well as changes of optical transmision of liquid crystal layers. Effects of this kind are fundamental for every application of liquid crystals.
Structure of
two-dimensional domains in nematic layer.
Numerical models used for simulations are based on continuum theory which is very well confirmed by experiments.
Schlieren
texture of nematic layer.
Simulations concern static structures as well as dynamics of them. They take into account the charge transport in nematic material and flows of nematic liquid connected with deformations.
Director
distribution and flow velocity distribution during onset of deformation of
nematic layer.
M. Buczkowska, G. Derfel, “Backflow in flexoelectric nematic layers deformed by electric field”, Liquid Crystals, 42, (2) 169-175 (2014)
The aim of my numerical simulations is to find out what is the influence of parameters (e.g. dielectric anisotropy, flexoelectricity, ion concentration, anchoring strength) on elastic, rheological, electrical and optical properties of nematic layers.
Ranges of
existence of planar, homeotropic and hybrid structure in layers of nematics
possessing various flexoelectric coefficients.
G. Derfel , “Stationary states of hybrid aligned flexoelectric nematic layers”, Liquid Crystals, 34, (10) 1201-1214, (2007)
Region of
existence of two-dimensional domains in parameters space characterizing dielectric, flexoelectric and elastic properties.
G. Derfel, M. Buczkowska, “Numerical study of flexoelectric longitudinal domains”, Molecular Crystals and Liquid Crystals, 547, 213-221, ( 2011)
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Team projects
- There are no projects.