ACADEMICIAN EMIL DJAKOV INSTITUTE OF ELECTRONICS
BULGARIAN ACADEMY OF SCIENCES
72, Tzarigradsko chaussee blvd, 1784-Sofia, Bulgaria
 

LABORATORY MICRO AND NANO PHOTONICS
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Project "FORMATION AND PHYSICAL PROPERTIES
OF COMPOSITE NANOSTRUCTURES
OF METAL OXIDES AND NOBLE METALS"
Coordinator: assoc. prof. Anna Dikovska, PhD
   
Project Summary Research team Detailed Project Information

    

PROJECT SUMMARY

    

    

The frontier of nanotechnology is continuously progressing toward the realization of multifunctional nanoparticles, in which different properties are achieved via fine control of the nanomaterial structure and composition. The addition of different elements in the same nanometric "box" is a successful strategy to expand the range of physical-chemical properties available within a single nanotool and sometimes allows the discovery of new phenomena and synergistic performances. The purpose of the proposed project is to reveal the basic processes and phenomena in the formation of composite nanostructures made of metal oxides and noble metals by the method of laser ablation. The methods for composite nanostructures fabrication will be applied in nanosecond and picosecond ablation time modes. It will mainly work in two directions to fabricate composite nanostructures - through laser ablation at atmospheric pressure and laser ablation in liquid. The subject of study will be composites made of selected metal oxides (ZnO, TiO2, Fe2O3) and noble metals (Au, Ag, Pt and Pd). The research activity in this project will be focus mainly on composite nanostructures made of nanoparticles of a combination of metal oxides; composite nanostructures made of metal oxides with embedded noble metal nanoparticles; composite heterostructures made of nanoparticles of a combination of noble metals. Experimental and theoretical studies will be conducted to determine the physical properties of the structures fabricated. The mechanisms of laser ablation with picosecond pulses will be investigated on the basis of numerical modeling, which will allow to reveal a fundamentally new physical picture that is created in ablation with pulses lasting close to the material relaxation times. It is expected to systematize the experimentally obtained and theoretically predicted results in a database on the influence of the type and parameters of metal oxide and noble metal nanoparticles on the physical characteristics of composite nanostructures.

   

    

    

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