RU – Page 2 – TechConnect Briefs

Silicon and nickel nanoparticle size and morphology as a key to control the particle photoluminescence and photochemistry

Tvauri I.V., Parkhomenko Yu.N., Khubezhov S.A., Kaloeva A.G., Demeev Z.S., Bzaev A.O., Bliev A.P., Sozanov V.G., Magkoev T.T., University of North Ossetia, RU

The work studies the structural and photoinduced properties of silicon nanoparticles (NanoSi) obtained by plasmachemical and electrolytic techniques and the nickel particles deposited on aluminum oxide film in ultra-high vacuum.

Investigation of secondary electron emission of a monocrystal diamond for creation microchannel devices with high quantum efficiency

Sadovoy V., Terentiev S., Bormashov V., FSBI TISNCM, RU

In this work possibility of use of a monocrystal diamond(CVD and HPHT) as highly effective secondary emitter is shown.The maximum SE coefficient about 14 at working accelerating voltage is received (several times exceeds SE coefficient [...]

Modeling of Graphene Functionalization by F- and FHF- Ions from Associates with Water Molecules

Lvova N.А., Ananina О.Yu., Technological Institute for Superhard and Novel Carbon Materials, RU

In this paper, we simulated the adsorption of fluorine on the surface of mono- and polycrystalline graphene from F- and FHF- ions associates with water molecules. As model objects, we used graphens without grain boundaries, [...]

Real-time monitoring of pathogens and nanomarkers in water by resonance laser spectroscopy techniques

Moguilnaya T.Yu., Bobkov P.V., Tomilin V.A., Kononenko E.B., JSC “SERVET-M”, RU

We develop a new method, allowing real-time monitoring of pathogens and DNA in water. The method is based on an analysis of radiation spectra in near-IR region. We have applied this method for rapid analysis [...]

Simulation of desolvated self-assembly in a picoliter drop of colloidal solution by dissipative particle dynamics

Lebedev-Stepanov P., Photochemistry Center, RU

A method of dissipative particle dynamics of charged colloidal submicro- and nanoparticles in evaporating picoliter droplet of solution deposited on plane substrate is proposed for investigation of self-assembly and self-ordering of colloids during solute evaporation, [...]

Nanostructure of Interfaces and Giant Magnetoresistance of Co/Cu Superlattices

Chuprakov S.A., Verhovsky S.V., Krinitsina T.P., Bannikova N.S., Blinov I.V., Milyaev M.A., Popov V.V., Ustinov V.V., Institute of Metal Physics, RU

The structure, the state of interfaces and magnetoresistance of [Co(1.5nm)/Cu(0.9nm)]n superlattices have been studied. The magnetoresistance decreases with the growth of n from 38% for n = 10 to 24% for n = 40. TEM [...]

X-ray Reflectometry of Planar Nanoheterostructures:a New Model-less Approach

Ustinov V.V., Babanov Yu.A., Salamatov Yu.A., Institute of Metal Physics, RU

X-ray reflectometry is a highly sensitive non-destructive method of the electron density profile determination in multilayer nanostructures. To evaluate the density variation with depth from the reflectivity data one uses traditionally the least squares method. [...]

Imaging and Spectroscopy of the Au Nanoclusters in the YSZ Films by Ballistic Electron/Hole Emission Microscopy

Filatov D.O., Guseinov D.V., Antonov I.A., Gorshkov O.N., Bobrov A.I., Pavlov D.A., N.I.Lobachevskii University of Nizhny Novgorod, RU

We report on the first time application of Ballistic Electron/Hole Emission Microscopy (BEEM/BHEM) to imaging and spectroscopy of metal NCs in the ultrathin dielectric films. We studied the yttria stabilized zirconia (YSZ) films (12% mol. [...]

Annealing effect on composition and functional properties of hybrid C-Au-Ag nanoparticles

Manshina A., Povolotskiy A., Povolotskaya A., Koshevoy I., Tunik S., St. Petersburg State University, RU

Here we present an approach to the synthesis of hybrid C-Au-Ag nanoparticles which were found to be 20–30 nm carbon nanospheres containing dispersed Au-Ag bimetallic nanoparticles (1–5 nm). It was found also that C-Au-Ag NPs [...]

Laser-induced synthesis of hybrid C-Au-Ag nanostructures: nanoparticles, nanoflakes, nanoflowers

Manshina A., Povolotskiy A., Povolotskaya A., Koshevoy I., Tunik S., St. Petersburg State University, RU

Metallic silver-gold nanoparticles (1–5 nm) encapsulated into carbon nanospheres (20–30 nm), or carbon flakes and flowers were synthesized via laser-induced chemical liquid phase deposition. The obtained carbon-silver-gold nanostructures are characterized by high specific surface area [...]