Light and neutron scattering
Project no. 19-28594X of the Czech Science Foundation
Bilateral project no. AR-17-02 of the Czech Academy of Sciences
Structure-thermal properties correlation of composite materials for energy application
Project no. 17-11494J of the Czech Science Foundation
Multiferroicity in skyrminonic materials
Project no. 16-09142S of the Czech Science Foundation
Lattice dynamics and dielectric response of tetragonal tungsten-bronze oxides
Project no. 16-12757S of the Czech Science Foundation
Ferroelectric properties of biological structures
Biological macromolecules and structures display significant electric polar states.
Regions of electric dipoles and/or multipoles with different vector moments depend
on conformation of the polypeptide chain and amino acid residues. The essential
polar structures in eucaryotic cells are formed by microtubules, hollow tubes
of 25 nm outer diameter forming a radial system from the centrosome to the cell membrane.
Microtubules display spectrum of conformational states, resonant spectra below 20 GHz,
and spectra at 20 THz (700 cm-1), in optical and UV regions, and digital memory (500 bits).
Microtubules in cells and separated microtubules will be investigated. Measurement by
contemporary methods of Raman spectroscopy (SERS, TERS) would disclose temperature
dependence of ferroelectric states up to 40 ºC. Evaluation of the effects of external
electric potential and PFM mapping would serve a basis for assessment of the conformation changes.
Project no. GA15-04121S of the Czech Science Foundation
Current perspectives of ferroelectric domain interfaces
The project focuses on investigation of the structure and properties of ideal two-dimensional
nanoscale objects: domain walls and similar interfaces in modern ferroelectric materials.
The research will be targeted to explore the nature and application potential of
three recently reported discoveries:
Ferroelectric photovoltaic effect on domain walls of bismuth ferrite,
Exotic chiral domain wall species in rhombohedral barium titanate and
Giant softening of elastic constants of relaxor ferroelectrics.