The development of synthesis processes of semi conducting SiC nanoparticles have allowed their investigations and evidences of their versatile electronic and optical features. Particularly, based on a laser pyrolysis method, different SiC nanopowders can be obtained and systematic studies are carried out as a function of the nanoparticle sizes, surface states and the stabilised crystalline polytypes. These parameters influence also their photoluminescence marked by red emission which is also enhanced by oxidation effects and by the involved active electronic centres at the nanoparticle boundaries. In the aim of potential applications, a development of original process was dedicated to functional materials based on nanosized SiC embedded in host matrices. The more relevant ones are the hybrid architectures which combine polymers with regard to their easy preparation, low cost, optical transparency and flexibility and the nanoparticles. The organic-inorganic interfaces modify the boundary charge density which contributes to the second order optical susceptibility as well as to the refractive index changes. These physical parameters govern respectively the non-linear optics (NLO) and electrooptical (EO) behaviour of the hybrid films. As specific application, we have realized functional hybrid materials as polymer/SiC nanocrystals and investigated their EO properties where the interfaces polymer-nanocrystal play a key role. Optimisation of all the process allow us to obtain linear EO parameters in the order of 5-7 pm/V; i.e. in the same order as realized in the standard inorganic monocrystals.

• Legal notice:
  

  Copyright (c) Pielaszek Research, all rights reserved.
  The above materials, including auxiliary resources, are subject to Publisher's copyright and the Author(s) intellectual rights. Without limiting Author(s) rights under respective Copyright Transfer Agreement, no part of the above documents may be reproduced without the express written permission of Pielaszek Research, the Publisher. Express permission from the Author(s) is required to use the above materials for academic purposes, such as lectures or scientific presentations.
  In every case, proper references including Author(s) name(s) and URL of this webpage: https://science24.com/paper/8071 must be provided.

1. Numerical simulations of Raman spectra as a tool in nanomaterial science
2. EPR investigations of hybrid nanocomposites based on silicon carbide nanoparticles and polyaniline