Methods and Materials for Bio-nanophotonics

When nanostructured, many materials start to exhibit new optical properties making them unique for a plethora of applications. In particular, despite small and indirect band gaps in the bulk state, nanostructured semiconductors (e.g, Si or Ge) become excellent size-dependent emitters in the visible. Another prominent example relates to noble metal nanostructures, which provide a number of unique plasmonics effects, including size-dependent absorption peaks, enormous local field amplification, resolution beyond the diffraction limit etc. The new properties of these emerging nanomaterials appear to extremely promising for biosensing, imaging and therapeutics. This talk will present activities of my research group, related to the development of methods and materials for bio-nanophotonics. The work is being held in three directions: - Development of nanophotonics methods for sensing and imaging. Achievements in this direction include the introduction of several revolutionary plasmonics-based methods and concepts: phase-sensitive Surface Plasmon Resonance biosensors, photonics crystal waveguide-based SPR biosensors, Si-based SPR, Nanostructured SPR etc.
"Green" laser-assisted synthesis of novel non-toxic nanomaterials. The use of laser assisted approaches enables to synthesise nanomaterials with unique optical and chemical properties, which can not be reproduced by conventional chemical routes. The achievements in this direction include the introduction of several novel laser-assisted methods, including femtosecond laser ablation in liquids, supercontinuum-based fragmentation, pulsed laser ablation, laser plasma-assisted nanofabrication. - Application of newly introduced methods and nanomaterials for modern tasks of biosensing, imaging and therapeutics.