A5048438911- Diamond and Carbon-based Materials Research
- Carbon Nanotubes in Composites
- Graphene research and applications
- High-pressure geophysics and materials
- Graphene and Nanomaterials Applications
- Laser-Ablation Synthesis of Nanoparticles
- Atomic and Subatomic Physics Research
- Force Microscopy Techniques and Applications
- Thermal properties of materials
- Polymer Nanocomposite Synthesis and Irradiation
- Dust and Plasma Wave Phenomena
- Advancements in Battery Materials
- Advanced materials and composites
- Electrochemical sensors and biosensors
- Electrochemical Analysis and Applications
- Electron and X-Ray Spectroscopy Techniques
- Advanced Semiconductor Detectors and Materials
- Graphite, nuclear technology, radiation studies
- Analytical Chemistry and Sensors
- Additive Manufacturing and 3D Printing Technologies
- Silicon Nanostructures and Photoluminescence
- Chemical and Physical Properties of Materials
- Electrostatics and Colloid Interactions
- Energetic Materials and Combustion
- Advanced Thermoelectric Materials and Devices
Ioffe Institute
2016-2024
Physico-Technical Institute
2000-2020
St. Petersburg College
2018
Russian Academy of Sciences
1993-2014
Graphene oxide (GO) is useful and promising material for graphene based applications in electronic, optics, chemistry, energy storage biology. At the beginning of history GO was only a simple cheap step preparation single multilayer films bulk structures by reduction. The further studies revealed substantial structure imperfection derived materials due to defects initial graphite incompletion reducing process. However, results recent research demonstrated great amount unique chemical,...
We present a study of the process reduction thin graphene oxide (GO) films consisting flakes with lateral size up to 100 μm through soft ultraviolet irradiation in argon atmosphere. It was found out that leads significant decrease overall content basal-plane functional groups, namely, epoxides and hydroxyls, but simultaneous increase total number edge-located carboxyl groups. Obtained transmission electron microscopy images showed this effect is related formation nanoscale holes course...
Monodisperse carbon nanodots (MCNDs) were fabricated. The prepared MCNDs form spherical porous aggregates.
Particles with a diffusive surface, characterized by deviation from the Porod power-law asymptotic behavior in small-angle scattering towards an exponent below −4, are considered respect to polydispersity problem. The case of low diffusivity is emphasized, which allows description length density distribution within spherically isotropic particles terms continuous profile. This significantly simplifies analysis particle-size function, as well change invariants under contrast variation. effect...
Neutrons can be an instrument or object in many fields of research. Major efforts all over the world are devoted to improving intensity neutron sources and efficiency delivery for experimental installations. In this context, reflectors play a key role because they allow significant improvement both economy efficiency. For slow neutrons, Detonation NanoDiamond (DND) powders provide exceptionally good reflecting performance due combination enhanced coherent scattering low absorption. The...
If the wavelength of radiation and size inhomogeneities in medium are approximately equal, might be intensively scattered reflected from its surface. Such efficient nanomaterial reflectors great scientific technological interest. In previous works, we demonstrated a significant improvement efficiency reflection slow neutrons powder diamond nanoparticles by replacing hydrogen located on surface with fluorine removing residual sp2 amorphous shells via fluorination process. this paper, study...
Over a decade ago, it was confirmed that detonation nanodiamond (DND) powders reflect very cold neutrons (VCNs) diffusively at any incidence angle and they quasi-specularly small angles. In the present publication, we report results of study on effect particle sizes overall efficiency neutron reflectors made DNDs. To perform this study, separated, by centrifugation, fraction finer DND nanoparticles (which are referred to as S-DNDs here) from broad initial size distribution experimentally...
The correlation between the structure, resistance and UV-irradiation impact on conductivity of polystyrene-based composites with multilayered graphene oxide flakes was observed.It is established that structure conducting properties depend concentration, surface modification methods by which incorporated into polystyrene matrix.