Optical materials science and nanotechnology: development of binary, ternary and quaternary colloidal semiconductor quantum dots (2-10 nm), applications of quantum dots as light emitting diodes, photodetectors, and probes in biomedicine; development of functional luminescent silica nanoparticles (5-500 nm) and their applications in biomedicine and cell biology;development of gold nanoparticles and silver/silver chloride nanoparticles, spectroscopy and dynamics of excitons and laser materials, superradiant emission from organic nanocrystals, electro-optic properties of molecular aggregates, femtosecond dynamics of fluorescent molecules, organic semiconductors adsorbed surfaces; nanoscale morphology of biomolecules and fluorescent materials, electron transfer spectroscopy and dynamics in azlactones.
Biological chemistry and physics: studied interaction dynamics of EGF receptors and ligands at the single molecule level in living cells in real time; investigated single molecule diffusion dynamics of EGFR and HER2 receptors in HME cells in real time; utilization of reverse micelles and vesicles as nanoscale reactors for material synthesis, nanotoxicology.
Biophotonics and biomedical engineering: development of silver/silver chloride nanoparticles based biosensor (ECG electrodes), development of wireless, wearable ECG, applications of fluorescence resonance energy transfer microscopy (FRET) and single molecule microscopy to molecular biology and medicine; development and applications of biosensors based on receptor-ligand interactions and on selective binding of dye assemblies (organic nanocrystals) to membranes.