In the present study, the pure ZnO nanoparticles was prepared by sol–gel method using zinc acetate dehydrate (Zn (Ac) 2·2H2O), as precursor and doped with metal ions and nonmetal ions like Vanadium, Dysprosium and Sulfur ions. The obtained ZnO nanoparticles have been studied using X-ray diffraction (XRD), which indicates the presence of hexagonal Wurtzite structure […]

This paper reports the preparation of N-doped TiO2 nanocrystals with an average of size ca. 9.8 nm synthesized by a controlled sol–gel reaction followed by calcinations at 400 0C. Triethylamine, triethanolamine, diisopropylamine were used to dope titania with nitrogen. By coupling structural (by X-ray diffraction, RAMAN spectra) and morphological (HRTEM, BET) characterizations with spectroscopic analyses […]

The article presents the mechanical grinding of building materials in various mills by nanopowder. During mechanical activation of composite binders, the cement minerals active molecules arise when molecular defects are destroying in the packaging areas and the intermolecular forces of metastable decompensating phase are destruct. The process is accompanied by a change in the kinetics […]

The dissociation of O2 and HO2 are important reactions that occur at the cathode of fuel cells and require catalysts to proceed. There is a need to replace the presently used platinum catalyst with less expensive materials. Recently a boron doped armchair graphene ribbon has been shown by cyclic voltammetry to be a potential catalyst […]

Poynting vector is a key property of electromagnetic waves as an energy-flow vector. Poynting vector in spatially uniform dielectric media is well known in an analytic form. In general, Poynting vector can be decomposed into orbital and spin parts. One way of controlling the direction of Poynting vector is to impose external potential onto the […]

The optical quantum generation was experimentally observed by using silicon nanocrystalline film which was irradiated by second-harmonic of YAG:Nd3+ laser. Matrix Hamiltonian for a model of Si-Si-Si- bridge by small external field perturbation was proposed. The coherent solution for a system with master equations which described photo-assistant electron transport in one dimensional chain of coupled […]

nanowires, compound thermoelectrics, mechanical energy harvesting

Nuclear renaissance isn’t possible without the development of new nano-hetero-structured materials. A novel micro-hetero structure, entitled “cer-liq-mesh”, nuclear fuel that self-separates the fission products from nuclear fuel, makes fuel reprocessing easier, allowing near-perfect burnup by easy fast recladding, being prone to improve the nuclear fuel cycle. Fuel heating analysis led to development of new direct […]