Search results for: D.A. Kirilenko

Items from 1 to 14 out of 14 results

article

Ultracentrifugation for ultrafine nanodiamond fractionation

S.V. Koniakhin, N.A. Besedina, D.A. Kirilenko, A.V. Shvidchenko, more

Superlattices and Microstructures > 2018 > 113 > C > 204-212

In this paper we propose a method for ultrafine fractionation of nanodiamonds using the differential centrifugation in the fields up to 215000g. The developed protocols yield 4–6 nm fraction giving main contribution to the light scattering intensity. The desired 4–6 nm fraction can be obtained from various types of initial nanodiamonds: three types of detonation nanodiamonds differing in purifying...

article

Strain relaxation in convex-graded InxAl1-xAs (x = 0.05–0.79) metamorphic buffer layers grown by molecular beam epitaxy on GaAs(001)

V.A. Solov’ev, M. Yu Chernov, M.V. Baidakova, D.A. Kirilenko, more

Superlattices and Microstructures > 2018 > 113 > C > 777-784

This paper presents a study of structural properties of InGaAs/InAlAs quantum well (QW) heterostructures with convex-graded In_xAl_1-xAs (x = 0.05–0.79) metamorphic buffer layers (MBLs) grown by molecular beam epitaxy on GaAs substrates. Mechanisms of elastic strain relaxation in the convex-graded MBLs were studied by the X-ray reciprocal space mapping combined with the data of spatially-resolved selected...

article

Selective area growth of N-polar GaN nanorods by plasma-assisted MBE on micro-cone-patterned c-sapphire substrates

V.N. Jmerik, N.V. Kuznetsova, D.V. Nechaev, T.V. Shubina, more

Journal of Crystal Growth > 2017 > 477 > C > 207-211

The site-controlled selective area growth of N-polar GaN nanorods (NR) was developed by plasma-assisted MBE (PA MBE) on micro-cone-patterned sapphire substrates (µ-CPSS) by using a two-stage growth process. A GaN nucleation layer grown by migration enhanced epitaxy provides the best selectivity for nucleation of NRs on the apexes of 3.5-µm-diameter cones, whereas the subsequent growth of 1-μm-high...

article

Rehybridization of carbon on facets of detonation diamond nanocrystals and forming hydrosols of individual particles

A.T. Dideikin, A.E. Aleksenskii, M.V. Baidakova, P.N. Brunkov, more

Carbon > 2017 > 122 > C > 737-745

It was revealed that sp³-sp² rehybridization of carbon atoms on the facets of nanocrystalline paricles of detonation diamond under thermal treatment results in weakening the hardness of its primary agglomerates. That discloses a secret of the unusual high strength of industrial diamond agglomerates and allows obtaining hydrosol of individual diamond nanoparticles ranging of 4–5 nm. Details of sp³-sp...

article

Correlated topographic and structural modification on Si surface during multi-shot femtosecond laser exposures: Si nanopolymorphs as potential local structural nanomarkers

A.A. Ionin, S.I. Kudryashov, A.O. Levchenko, L.V. Nguyen, more

Applied Surface Science > 2017 > 416 > C > 988-995

High-pressure Si-XII and Si-III nanocrystalline polymorphs, as well as amorphous Si phase, appear consequently during multi-shot femtosecond-laser exposure of crystalline Si wafer surface above its spallation threshold along with permanently developing quasi-regular surface texture (ripples, microcones), residual hydrostatic stresses and subsurface damage, which are characterized by scanning and transmission...

article

Oriented-attachment growth of diamond single crystal from detonation nanodiamonds

A.T. Dideikin, E.D. Eidelman, S.V. Kidalov, D.A. Kirilenko, more

Diamond and Related Materials > 2017 > 75 > C > 85-90

Possibility of growth of diamond single crystals from nanodiamond particles by oriented attachment mechanism under influence of organic substances has been suggested and experimentally confirmed.It has been found that diamond single crystals ranging up to 1.5μm are formed from the 4–5nm nanodiamond particles at high pressures and high temperatures treatment (HPHT; P~7GPa, T~1300°C). It has been experimentally...

article

Peculiarities of strain relaxation in linearly graded InxGa1−xAs/GaAs(001) metamorphic buffer layers grown by molecular beam epitaxy

S.V. Sorokin, G.V. Klimko, I.V. Sedova, A.A. Sitnikova, more

Journal of Crystal Growth > 2016 > 455 > C > 83-89

This paper presents a comprehensive study of structural, optical and electrical properties of heterostructures with linearly graded In_xGa_1−xAs metamorphic buffer layers (MBLs) grown by molecular beam epitaxy on GaAs (001) substrates. The low density of threading dislocations (well below 10⁶cm⁻²) in 1-μm-thick In_0.3Ga_0.7As layers grown atop of the linearly graded In_xGa_1−xAs/GaAs MBLs has been confirmed...

article

Structural and luminescent properties of Gd oxide doped with Eu3+ embedded in mesopores of SiO2 particles

K.N. Orekhova, D.A. Eurov, D.A. Kurdyukov, V.G. Golubev, more

Journal of Alloys and Compounds > 2016 > 678 > C > 434-438

In this work, we investigated monodisperse spherical particles of mesoporous silica filled with gadolinium and europium oxide based material (admittedly – gadolinium oxide doped with europium) – mSiO₂/a-Gd₂O₃:Eu³⁺. The composition of the samples was studied by the electron microprobe analysis. The size distribution and shape of the particles were characterized by scanning electron microscopy. Structural...

article

TEM study of defect structure of GaN epitaxial films grown on GaN/Al2O3 substrates with buried column pattern

M.G. Mynbaeva, A.V. Kremleva, D.A. Kirilenko, A.A. Sitnikova, more

Journal of Crystal Growth > 2016 > 445 > C > 30-36

A TEM study of defect structure of GaN films grown by chloride vapor-phase epitaxy (HVPE) on GaN/Al₂O₃ substrates was performed. The substrates were fabricated by metal-organic chemical vapor deposition overgrowth of templates with buried column pattern. The results of TEM study showed that the character of the defect structure of HVPE-grown films was determined by the configuration of the column...

article

Measuring the height-to-height correlation function of corrugation in suspended graphene

D.A. Kirilenko, P.N. Brunkov

Ultramicroscopy > 2016 > 165 > C > 1-7

Nanocorrugation of 2D crystals is an important phenomenon since it affects their electronic and mechanical properties. The corrugation may have various sources; one of them is flexural phonons that, in particular, are responsible for the thermal conductivity of graphene. A study of corrugation of just the suspended graphene can reveal much of valuable information on the physics of this complicated...

article

One-step synthesis of a suspended ultrathin graphene oxide film: Application in transmission electron microscopy

D.A. Kirilenko, A.T. Dideykin, A.E. Aleksenskiy, A.A. Sitnikova, more

Micron > 2015 > 68 > C > 23-26

Ultrathin graphene films find their use as advantageous support for nano- and biomaterials investigations. Thin film causes a very slight deterioration to measured signals, thus providing more details of the object's structure at nanoscale. The ultimate thinness of graphene works in the best way for this purpose. However, obtaining suspended thin film of a large-area, which is convenient for applications,...

article

A study of the intermediate layer in 3C–SiC/6H–SiC heterostructures

A.A. Lebedev, M.V. Zamoryanskaya, S. Yu. Davydov, D.A. Kirilenko, more

Journal of Crystal Growth > 2014 > 396 > Complete > 100-103

Transmission electron microscopy and the cathodoluminescence method have been used to study the transition region in 3C–SiC/6H–SiC heterostructures. It is shown that this region is, as a rule, constituted by alternating 3C–SiC and 6H–SiC layers, with possible inclusion of other silicon carbide polytypes. An assumption is made that this structure of the transition region can be explained in terms of...

article

Diagnostic mirrors with transparent protection layer for ITER

A.G. Razdobarin, E.E. Mukhin, V.V. Semenov, S.Yu. Tolstyakov, more

Fusion Engineering and Design > 2011 > 86 > 6-8 > 1341-1344

Fast degradation of in-vessel optics is one of the most serious problems for all optical diagnostics in ITER. To provide the resistance to mechanical and thermal stresses along with a high stability of optical characteristics under deposition-dominated conditions we suggest using high-reflective metallic (Ag or Al) film mirrors coated on silicon substrate and protected with thin oxide film in the...

article

High reflective mirrors for in-vessel applications in ITER

A.G. Razdobarin, E.E. Mukhin, V.V. Semenov, S. Yu.Tolstyakov, more

Nuclear Inst. and Methods in Physics Research, A > 2010 > 623 > 2 > 809-811

The structure and surface morphology of aluminum and silver mirrors covered with protective dielectric oxide layer were studied by means of TEM and SEM. The presence of needle-like pores throughout the thickness of the ZrO ₂ film and bubble-like pores in Al ₂ O ₃ was observed. The test for resistivity to deuterium ion bombardment shows that the exposition to a fluence of ∼2×10...

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Keywords

TEM (3)
A3. MOLECULAR BEAM EPITAXY (2)
B2. SEMICONDUCTING III–V MATERIALS (2)
ITER (2)
A1. CRYSTAL STRUCTURE (1)
A1. DEFECTS (1)
A1. NANOSTRUCTURES (1)
A1. SPINODAL DECOMPOSITION (1)
A1. STRESSES (1)
A1. SUBLIMATION (1)
A1. SUBSTRATES (1)
A1. X-RAY DIFFRACTION (1)
A3. HETEROEPITAXY (1)
A3. HYDRIDE VAPOR PHASE EPITAXY (1)
A3. METALORGANIC CHEMICAL VAPOR DEPOSITION (1)
A3. SELECTIVE EPITAXY (1)
ABLATIVE SURFACE NANO/MICROSTRUCTURING (1)
AL2O3 (1)
B1. NITRIDES (1)
B1. SAPPHIRE (1)
B2. SIC (1)
BLISTERING (1)
CATHODOLUMINESCENCE (1)
DETONATION NANODIAMOND (1)
DEUTERIUM IONS (1)
DIAMOND SINGLE CRYSTAL (1)
DLS (1)
ELECTRON DIFFRACTION (1)
FEMTOSECOND LASER (1)
FIRST MIRROR (1)
FLEXURAL PHONONS (1)
FRACTIONATION (1)
GADOLINIUM OXIDE DOPED WITH EUROPIUM (1)
GRAPHENE (1)
GRAPHENE CORRUGATION (1)
HIGH-REFLECTIVE MIRRORS (1)
HPHT SYNTHESIS (1)
INGAAS/INALAS QUANTUM WELL (1)
LATTICE TILT (1)
MESOPOROUS SILICA (1)
METALLIC MIRRORS (1)
METAMORPHIC BUFFER (1)
MICRO-RAMAN CHARACTERIZATION (1)
MISFIT DISLOCATIONS (1)
NANODIAMOND (1)
NANOMATERIALS (1)
NANOPARTICLE (1)
ORIENTED ATTACHMENT GROWTH (1)
OXIDE FILMS (1)
OXIDE MATERIALS (1)
PHASE TRANSITIONS (1)
RARE EARTH ALLOYS AND COMPOUNDS (1)
RE-DOPED INSULATORS (1)
SELECTED AREA ELECTRON DIFFRACTION (1)
SEM (1)
SI SURFACE (1)
SPUTTERING YIELD (1)
TRANSMISSION ELECTRON MICROSCOPY (1)
ULTRACENTRIFUGATION (1)
X-RAY RECIPROCAL SPACE MAPPING (1)
XRD (1)
ZRO2 (1)
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Journal

Journal of Crystal Growth (4)
Superlattices and Microstructures (2)
Applied Surface Science (1)
Carbon (1)
Diamond and Related Materials (1)
Fusion Engineering and Design (1)
Journal of Alloys and Compounds (1)
Micron (1)
Nuclear Inst. and Methods in Physics Research, A (1)
Ultramicroscopy (1)
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Search results for: D.A. Kirilenko

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