čas: 23.4.2021 00:08:59
Obnovit | RAW
J. Heyrovsky Institute of Physical Chemistry of the CAS, v. v. i.,
List of available PhD theses
Electrochemistry of van Hove singularities in two-dimensional crystals
The PhD candidate will develop the methodology required to investigate the discontinuities in the density of electronic states (so-called van Hove singularities) in two-dimensional crystals and their heterostructures. The project will include the preparation of the materials (graphene, transition metal dichalcogenides like MoS2) by exfoliation or transfer, preparation of electrodes, and in-situ Raman and photoluminescence spektroelectroelectrochemical investigation coupled with electric transport and electron transfer measurement.
Rational design of oxides for anodic electrolytic reactions
The work will focus systematically approach to description activity and selectivity of oxide materials in gas evolving anodic processes namely in oxygen and chlorine evolution. Primary attention will be paid to the behavior of modelf binary in the systems based on Ru-Ti-Me (Me= transition metal) identified as prospective materials in computational studies. General relationships between the local structure of the active sites on oxides and their activity in electrocatalytic processes will be formulated and subsequently used in formulation of novel class of anodic electrocalytst.
Tailoring metallic nanoparticles for specific plasmonic enhancement
The focus of the work will be on assembly of plasmonic nanoparticles and fluorescent nanoparticles using DNA origami. Metal nanostructures are capable of massive enhancements of optical response, which arise from collective electromagnetic resonances called plasmons. The PhD work will consist of characterization of plasmon resonance (bulk and single particle) of metallic nanoparticles, DNA functionalization of plasmonic nanoparticles and optimization of the process of their self-assembly to desired orientation. Developed assemblies will serve to study spatial manipulation of light by plasmons.
Visualization with plasmonic nanoparticles using single molecule microscopy techniques
The focus of the work will be on evaluating the magnitude of the fluorescence shifts and enhancement of plasmon-coupled fluorophores using single molecule localization microscopy and time-resolved single molecule spectroscopy. Single molecule localization microscopy overcomes the diffraction limit by calculating the center positions of a fluorescent spot based on the known point spread function of the optical microscope. While plasmonic coupling is known to strongly increase number of emitted photons from a fluorophore, it also appears to affect the position of the emission. The work will consist of visualization of assembled fluorophores with and without a plasmonic nanoparticles, data analysis and statistics.