A5084831261- Diamond and Carbon-based Materials Research
- Boron and Carbon Nanomaterials Research
- Fullerene Chemistry and Applications
- High-pressure geophysics and materials
- Carbon Nanotubes in Composites
- Graphene research and applications
- Advanced X-ray Imaging Techniques
- Metal and Thin Film Mechanics
- Advanced materials and composites
- Advanced Surface Polishing Techniques
- Force Microscopy Techniques and Applications
- Particle Accelerators and Free-Electron Lasers
- Ion-surface interactions and analysis
- Advanced Materials Characterization Techniques
- Advanced ceramic materials synthesis
- Advanced Thermoelectric Materials and Devices
- Advanced Electron Microscopy Techniques and Applications
- Thermal properties of materials
- Laser-Plasma Interactions and Diagnostics
- Advanced Fiber Laser Technologies
- Thermal Radiation and Cooling Technologies
- MXene and MAX Phase Materials
- Acoustic Wave Resonator Technologies
- Superconductivity in MgB2 and Alloys
- Mechanical and Optical Resonators
Technological Institute for Superhard and Novel Carbon Materials
2015-2024
Moscow Institute of Physics and Technology
2014-2024
Moscow Power Engineering Institute
2019-2022
Moscow Aviation Institute
2021-2022
National University of Science and Technology
2014-2021
Pohang University of Science and Technology
2020
Pohang Accelerator Laboratory
2020
Argonne National Laboratory
2016-2020
Institute of Physics and Technology
2020
National University of Science and Technology
2015
Severe plastic deformation (SPD) is effective in producing bulk ultrafine-grained and nanostructured materials with large densities of lattice defects. This field, also known as NanoSPD, experienced a significant progress within the past two decades. Beside classic SPD methods such high-pressure torsion, equal-channel angular pressing, accumulative roll-bonding, twist extrusion, multi-directional forging, various continuous techniques were introduced to produce upscaled samples. Moreover,...
We designed, fabricated, and tested for the first time a prototype of nuclear micropower battery with an overall active area about 15 cm 2 consisted in 130 single cells based on Schottky barrier diamond diodes. Diodes selection assembly was performed basis I – V curves measurements at electron beam irradiation SEM. A typical energy conversion efficiency each cell 4–6%. To characterize performance, we carried out photovoltaic using different radioisotopes. Under by 63 Ni source activity 5 mCi...
A double-crystal diamond monochromator was recently implemented at the Linac Coherent Light Source. It enables splitting pulses generated by free electron laser in hard x-ray regime and thus allows simultaneous operations of two instruments. Both crystals are High-Pressure High-Temperature grown type-IIa crystal plates with (111) orientation. The first has a thickness ~100 μm to allow high reflectivity within Bragg bandwidth good transmission for other wavelengths downstream use. second is...
Abstract High-resolution X-ray spectroscopy in the sub-nanosecond to femtosecond time range requires ultrashort pulses and a spectral flux considerably larger than that presently available. free-electron laser (XFEL) radiation from hard self-seeding (HXRSS) setups has been demonstrated past offers necessary peak properties. So far, these systems could not provide high repetition rates enabling average flux. We report results for cascaded HXRSS system installed at European XFEL, currently...
High-pressure studies on fullerenes have previously shown the existence of one- and two-dimensional (2D) polymerized C60 structures. Synchrotron radiation measurements, performed samples quenched from 13 gigapascals 820 kelvin, yield unambiguous proof for a three-dimensional (3D) derivative. Moreover, unusual ellipsoidal Debye-Scherrer diffraction patterns are observed, which shows that giant anisotropic deformation induced by nonhydrostatic compression is retained in samples. The multiple...
A thermoelectric nanocomposite of Bi${}_{0.5}$Sb${}_{1.5}$Te${}_{3}$ with the C${}_{60}$ fullerene molecules has been synthesized and studied. The provide phonons blocking, reducing lattice thermal conductivity. reduction electrical conductivity is much less than heat at a low content. Therefore, figure merit increases up to 25$%$ 305 K. properties materials have analyzed theoretically in frame Boltzmann equation approach. calculations predict optimal carrier concentration content for...
We demonstrate parabolic single-crystal diamond compound refractive lenses designed for coherent x-ray imaging resilient to extreme thermal and radiation loading expected from next generation light sources. To ensure the preservation of coherence resilience, are manufactured highest-quality single-crystalline synthetic material grown by a high-pressure high-temperature technique. Picosecond laser milling is applied machine shapes with ≃1 μm precision surface roughness. A lens comprised six...
Nanodiamond in a 2–5-nm size interval (which is typical for an appearance of quantum confinement effect) show Raman spectra composed 3 bands at 1325, 1600, and 1500 cm−1 (at the 458-nm laser excitation) which shifts to 1630 257-nm excitation. Contrary sp2-bonded carbon, relative intensities do not depend on 458- excitation wavelengths, halfwidth intensity 1600 band does change visibly under pressure least up 50 GPa. Bulk modulus nanodiamond determined from high-pressure study around 560...
The insufficient data on a structure of the boron-doped diamond (BDD) has frustrated efforts to fully understand fascinating electronic properties this material and how they evolve with doping.We have employed X-ray diffraction Raman scattering for detailed study large-sized BDD single crystals.We demonstrate formation boron-carbon (B-C) nanosheets bilayers in increasing boron concentration.An incorporation two atoms unit cell plays key role B-C bilayer formation.Evidence these which are...
This paper presents data on the study of phase transitions in solids under pressure with shear deformation. Carbon, silicon and zirconium were used as model substances. The studies carried out by electron microscopy optical (Raman) spectroscopy. A description a high diamond anvil cell is also provided.