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Additive manufacturing erases the distance between design ideas and finished parts. However, designers must use several software tools to use these advantages. Moreover, these tools operate with different representations of geometry. This paper describes the architecture of a new CAD/CAM system that uses only the function representation of the geometry (FRep). It provides all widely used design operations and allows an engineer to employ robust and efficient topology optimization algorithms. The developed CAD/CAM system consists of 3D modeling, simulation, topology optimization, and direct manufacturing modules. We successfully printed designed parts and performed mechanical tests of printed parts. The results of tests show good agreement with simulation data. The system makes it possible to create structures with the desired properties in a fast and flexible way. The proposed approach significantly helps in designing additive manufacturing process and saves time for its users.
Dmitry Popov; Yulia Kuzminova; Evgenii Maltsev; Stanislav Evlashin; Alexander Safonov; Iskander Akhatov; Alexander Pasko. CAD/CAM System for Additive Manufacturing with a Robust and Efficient Topology Optimization Algorithm Based on the Function Representation. Applied Sciences 2021, 11, 7409 .
AMA StyleDmitry Popov, Yulia Kuzminova, Evgenii Maltsev, Stanislav Evlashin, Alexander Safonov, Iskander Akhatov, Alexander Pasko. CAD/CAM System for Additive Manufacturing with a Robust and Efficient Topology Optimization Algorithm Based on the Function Representation. Applied Sciences. 2021; 11 (16):7409.
Chicago/Turabian StyleDmitry Popov; Yulia Kuzminova; Evgenii Maltsev; Stanislav Evlashin; Alexander Safonov; Iskander Akhatov; Alexander Pasko. 2021. "CAD/CAM System for Additive Manufacturing with a Robust and Efficient Topology Optimization Algorithm Based on the Function Representation." Applied Sciences 11, no. 16: 7409.
Nonlinear electrical properties, such as negative differential resistance (NDR), are essential in numerous electrical circuits, including memristors. Several physical origins have been proposed to lead to the NDR phenomena in semiconductor devices over the last more than half a century. Here, we report NDR behavior formation in randomly oriented graphenelike nanostructures up to 37 K and high on-current density up to 105A/cm2. Our modeling of the current-voltage characteristics, including the self-heating effects, suggests that strong temperature dependence of the low-bias resistance is responsible for the nonlinear electrical behavior. Our findings open opportunities for the practical realization of the on-demand NDR behavior in nanostructures of two- and three-dimensional material-based devices via heat management in the conducting films and the underlying substrates.
S.A. Evlashin; M.A. Tarkhov; D.A. Chernodubov; A.V. Inyushkin; A.A. Pilevsky; P.V. Dyakonov; A.A. Pavlov; N.V. Suetin; I.S. Akhatov; V. Perebeinos. Negative Differential Resistance in Carbon-Based Nanostructures. Physical Review Applied 2021, 15, 054057 .
AMA StyleS.A. Evlashin, M.A. Tarkhov, D.A. Chernodubov, A.V. Inyushkin, A.A. Pilevsky, P.V. Dyakonov, A.A. Pavlov, N.V. Suetin, I.S. Akhatov, V. Perebeinos. Negative Differential Resistance in Carbon-Based Nanostructures. Physical Review Applied. 2021; 15 (5):054057.
Chicago/Turabian StyleS.A. Evlashin; M.A. Tarkhov; D.A. Chernodubov; A.V. Inyushkin; A.A. Pilevsky; P.V. Dyakonov; A.A. Pavlov; N.V. Suetin; I.S. Akhatov; V. Perebeinos. 2021. "Negative Differential Resistance in Carbon-Based Nanostructures." Physical Review Applied 15, no. 5: 054057.
In our manuscript, we present our protocol for data processing to mitigate the effects of interfering analytes on the identification of the chemical species detected by sensors. Considering NO2 and CO2, we designed electrochemical sensors whose response yielded the cyclic voltammetry data that we analyzed to classify single-species components and their mixtures using a data-driven approach to generate a chemical space where their mixtures can be deconvoluted.
Airat Kotliar-Shapirov; Fedor S. Fedorov; Henni Ouerdane; Stanislav Evlashin; Albert G. Nasibulin; Keith J. Stevenson. Chemical Space Mapping for Multicomponent Gas Mixtures. 2021, 1 .
AMA StyleAirat Kotliar-Shapirov, Fedor S. Fedorov, Henni Ouerdane, Stanislav Evlashin, Albert G. Nasibulin, Keith J. Stevenson. Chemical Space Mapping for Multicomponent Gas Mixtures. . 2021; ():1.
Chicago/Turabian StyleAirat Kotliar-Shapirov; Fedor S. Fedorov; Henni Ouerdane; Stanislav Evlashin; Albert G. Nasibulin; Keith J. Stevenson. 2021. "Chemical Space Mapping for Multicomponent Gas Mixtures." , no. : 1.
In our manuscript, we present our protocol for data processing to mitigate the effects of interfering analytes on the identification of the chemical species detected by sensors. Considering NO2 and CO2, we designed electrochemical sensors whose response yielded the cyclic voltammetry data that we analyzed to classify single-species components and their mixtures using a data-driven approach to generate a chemical space where their mixtures can be deconvoluted.
Airat Kotliar-Shapirov; Fedor S. Fedorov; Henni Ouerdane; Stanislav Evlashin; Albert G. Nasibulin; Keith J. Stevenson. Chemical Space Mapping for Multicomponent Gas Mixtures. 2021, 1 .
AMA StyleAirat Kotliar-Shapirov, Fedor S. Fedorov, Henni Ouerdane, Stanislav Evlashin, Albert G. Nasibulin, Keith J. Stevenson. Chemical Space Mapping for Multicomponent Gas Mixtures. . 2021; ():1.
Chicago/Turabian StyleAirat Kotliar-Shapirov; Fedor S. Fedorov; Henni Ouerdane; Stanislav Evlashin; Albert G. Nasibulin; Keith J. Stevenson. 2021. "Chemical Space Mapping for Multicomponent Gas Mixtures." , no. : 1.
Grain refinement is an effective approach to improve mechanical properties of conventionally-manufactured high entropy alloys (HEAs). Additive manufacturing of HEAs is a new materials challenge and increasing reports are available for exploring the optimal processing parameters and post-manufacturing treatments to advance the physical and mechanical properties of additively-manufactured (AM) HEAs. At the current stage of the development of AM HEAs, it is necessary to investigate the significance of grain refinement on their mechanical properties and structures. In the present study, a CoCrFeNi HEA is manufactured by a laser powder-bed fusion technique using pre-alloyed HEA powders on which grain refinement was conducted by high-pressure torsion for up to 8 turns under 6 GPa at room temperature. The results from nanoindentation and Vickers microhardness testing demonstrate high strain hardening capability and increased plasticity, thus potentially high ductility, in the nanostructured AM CoCrFeNi HEA. X-ray diffraction analysis demonstrates the structural evolution with decreasing crystallite size, increasing microstrain and expanding lattice parameter with grain refinement in the HEA. The structural changes justify the estimation by nanoindentation of the rate-controlling mechanism of the grain boundary-mediated dislocation activity for the nanostructured AM HEA. This study provides advantages of nanostructuring for current developments in the AM technology of HEAs.
Wenrui Zhao; Jae-Kyung Han; Yulia O. Kuzminova; Stanislav A. Evlashin; Alexander P. Zhilyaev; Alexander M. Pesin; Jae-Il Jang; Klaus-Dieter Liss; Megumi Kawasaki. Significance of grain refinement on micro-mechanical properties and structures of additively-manufactured CoCrFeNi high-entropy alloy. Materials Science and Engineering: A 2021, 807, 140898 .
AMA StyleWenrui Zhao, Jae-Kyung Han, Yulia O. Kuzminova, Stanislav A. Evlashin, Alexander P. Zhilyaev, Alexander M. Pesin, Jae-Il Jang, Klaus-Dieter Liss, Megumi Kawasaki. Significance of grain refinement on micro-mechanical properties and structures of additively-manufactured CoCrFeNi high-entropy alloy. Materials Science and Engineering: A. 2021; 807 ():140898.
Chicago/Turabian StyleWenrui Zhao; Jae-Kyung Han; Yulia O. Kuzminova; Stanislav A. Evlashin; Alexander P. Zhilyaev; Alexander M. Pesin; Jae-Il Jang; Klaus-Dieter Liss; Megumi Kawasaki. 2021. "Significance of grain refinement on micro-mechanical properties and structures of additively-manufactured CoCrFeNi high-entropy alloy." Materials Science and Engineering: A 807, no. : 140898.
The particle size distribution significantly affects the material properties of the additively manufactured parts. In this work, the influence of bimodal powder containing nano- and micro-scale particles on microstructure and materials properties is studied. Moreover, to study the effect of the protective atmosphere, the test samples were additively manufactured from 316L stainless steel powder in argon and nitrogen. The samples fabricated from the bimodal powder demonstrate a finer subgrain structure, regardless of protective atmospheres and an increase in the Vickers microhardness, which is in accordance with the Hall-Petch relation. The porosity analysis revealed the deterioration in the quality of as-built parts due to the poor powder flowability. The surface roughness of fabricated samples was the same regardless of the powder feedstock materials used and protective atmospheres. The results suggest that the improvement of mechanical properties is achieved by adding a nano-dispersed fraction, which dramatically increases the total surface area, thereby contributing to the nitrogen absorption by the material.
Aleksandr M. Filimonov; Oleg A. Rogozin; Denis G. Firsov; Yulia O. Kuzminova; Semen N. Sergeev; Alexander P. Zhilyaev; Marat I. Lerner; Nikita E. Toropkov; Alexey P. Simonov; Ivan I. Binkov; Ilya V. Okulov; Iskander S. Akhatov; Stanislav A. Evlashin. Hardening of Additive Manufactured 316L Stainless Steel by Using Bimodal Powder Containing Nanoscale Fraction. Materials 2020, 14, 115 .
AMA StyleAleksandr M. Filimonov, Oleg A. Rogozin, Denis G. Firsov, Yulia O. Kuzminova, Semen N. Sergeev, Alexander P. Zhilyaev, Marat I. Lerner, Nikita E. Toropkov, Alexey P. Simonov, Ivan I. Binkov, Ilya V. Okulov, Iskander S. Akhatov, Stanislav A. Evlashin. Hardening of Additive Manufactured 316L Stainless Steel by Using Bimodal Powder Containing Nanoscale Fraction. Materials. 2020; 14 (1):115.
Chicago/Turabian StyleAleksandr M. Filimonov; Oleg A. Rogozin; Denis G. Firsov; Yulia O. Kuzminova; Semen N. Sergeev; Alexander P. Zhilyaev; Marat I. Lerner; Nikita E. Toropkov; Alexey P. Simonov; Ivan I. Binkov; Ilya V. Okulov; Iskander S. Akhatov; Stanislav A. Evlashin. 2020. "Hardening of Additive Manufactured 316L Stainless Steel by Using Bimodal Powder Containing Nanoscale Fraction." Materials 14, no. 1: 115.
There are more than 50 families of dendrimers, and some of which, such as polyamidoamine PAMAM, are well studied, and some are just starting to attract the attention of researchers. One promising type of dendrimers is sulfonimide-based dendrimers (SBDs). To date, SBDs are used in organic synthesis as starting reagents for the convergent synthesis of higher generations dendrimers, in materials science as alternative electrolyte solutions for fuel cells, and in medicinal chemistry as potential substances for drug transfer procedures. Despite the fact that most dendrimers are amorphous substances among the SBDs, several structures are distinguished that are prone to the formation of crystalline solids with melting points in the range of 120–250 °C. Similar to those of other dendrimers, the chemical and physical properties of SBDs depend on their outer shell, which is formed by functional groups. To date, SBDs decorated with end groups such as naphthyl, nitro, methyl, and methoxy have been successfully synthesized, and each of these groups gives the dendrimers specific properties. Analysis of the structure of SBD, their synthesis methods, and applications currently available in the literature reveals that these dendrimers have not yet been fully explored.
Julia V. Bondareva; Stanislav A. Evlashin; Oleg V. Lukin. Sulfonimide-Based Dendrimers: Progress in Synthesis, Characterization, and Potential Applications. Polymers 2020, 12, 2987 .
AMA StyleJulia V. Bondareva, Stanislav A. Evlashin, Oleg V. Lukin. Sulfonimide-Based Dendrimers: Progress in Synthesis, Characterization, and Potential Applications. Polymers. 2020; 12 (12):2987.
Chicago/Turabian StyleJulia V. Bondareva; Stanislav A. Evlashin; Oleg V. Lukin. 2020. "Sulfonimide-Based Dendrimers: Progress in Synthesis, Characterization, and Potential Applications." Polymers 12, no. 12: 2987.
3D printing allows the fabrication of ceramic implants, making a personalized approach to patients’ treatment a reality. In this work, we have tested the applicability of the Function Representation (FRep) method for geometric simulation of implants with complex cellular microstructure. For this study, we have built several parametric 3D models of 4 mm diameter cylindrical bone implant specimens of four different types of cellular structure. The 9.5 mm long implants are designed to fill hole defects in the trabecular bone. Specimens of designed ceramic implants were fabricated at a Ceramaker 900 stereolithographic 3D printer, using a commercial 3D Mix alumina (Al2O3) ceramic paste. Then, a single-axis compression test was performed on fabricated specimens. According to the test results, the maximum load for tested specimens constituted from 93.0 to 817.5 N, depending on the size of the unit cell and the thickness of the ribs. This demonstrates the possibility of fabricating implants for a wide range of loads, making the choice of the right structure for each patient much easier.
Alexander Safonov; Evgenii Maltsev; Svyatoslav Chugunov; Andrey Tikhonov; Stepan Konev; Stanislav Evlashin; Dmitry Popov; Alexander Pasko; Iskander Akhatov. Design and Fabrication of Complex-Shaped Ceramic Bone Implants via 3D Printing Based on Laser Stereolithography. Applied Sciences 2020, 10, 7138 .
AMA StyleAlexander Safonov, Evgenii Maltsev, Svyatoslav Chugunov, Andrey Tikhonov, Stepan Konev, Stanislav Evlashin, Dmitry Popov, Alexander Pasko, Iskander Akhatov. Design and Fabrication of Complex-Shaped Ceramic Bone Implants via 3D Printing Based on Laser Stereolithography. Applied Sciences. 2020; 10 (20):7138.
Chicago/Turabian StyleAlexander Safonov; Evgenii Maltsev; Svyatoslav Chugunov; Andrey Tikhonov; Stepan Konev; Stanislav Evlashin; Dmitry Popov; Alexander Pasko; Iskander Akhatov. 2020. "Design and Fabrication of Complex-Shaped Ceramic Bone Implants via 3D Printing Based on Laser Stereolithography." Applied Sciences 10, no. 20: 7138.
The present paper is focused on an experimental study of the damage-to-failure mechanism of additively manufactured 316L stainless steel specimens subjected to very high cycle fatigue (VHCF) loading. Ultrasonic axial tension-compression tests were carried out on specimens for up to 109 cycles, and fracture surface analysis was performed. A fine granular area (FGA) surrounding internal defects was observed and formed a “fish-eye” fracture type. Nonmetallic inclusions and the lack of fusion within the fracture surfaces that were observed with SEM were assumed to be sources of damage initiation and growth of the FGAs. The characteristic diameter of the FGAs was ≈500 mm on the fracture surface and were induced by nonmetallic inclusions; this characteristic diameter was the same as that for the fracture surface induced by a lack of fusion. Fracture surfaces corresponding to the high cycle fatigue (HCF) regime were discussed as well to emphasize damage features related to the VHCF regime.
Boris Voloskov; Stanislav Evlashin; Sarkis Dagesyan; Sergey Abaimov; Iskander Akhatov; Ivan Sergeichev. Very High Cycle Fatigue Behavior of Additively Manufactured 316L Stainless Steel. Materials 2020, 13, 3293 .
AMA StyleBoris Voloskov, Stanislav Evlashin, Sarkis Dagesyan, Sergey Abaimov, Iskander Akhatov, Ivan Sergeichev. Very High Cycle Fatigue Behavior of Additively Manufactured 316L Stainless Steel. Materials. 2020; 13 (15):3293.
Chicago/Turabian StyleBoris Voloskov; Stanislav Evlashin; Sarkis Dagesyan; Sergey Abaimov; Iskander Akhatov; Ivan Sergeichev. 2020. "Very High Cycle Fatigue Behavior of Additively Manufactured 316L Stainless Steel." Materials 13, no. 15: 3293.
Supercapacitors based on carbon nanomaterials are attracting much attention because of their high capacitance enabled by large specific surface area. The introduction of heteroatoms such as N or O enhances the specific capacitance of these materials. However, the mechanisms that lead to the increase in the specific capacitance are not yet well-studied. In this Letter, we demonstrate an effective method for modification of the surface of carbon nanowalls (CNWs) using DC plasma in atmospheres of O2, N2, and their mixture. Processing in the plasma leads to the incorporation of ∼4 atom % nitrogen and ∼10 atom % oxygen atoms. Electrochemical measurements reveal that CNWs functionalized with oxygen groups are characterized by higher capacitance. The specific capacitance for samples with oxygen reaches 8.9 F cm–3 at a scan rate of 20 mV s–1. In contrast, the nitrogen-doped samples demonstrate a specific capacitance of 4.4 F cm–3 at the same scan rate. The mechanism of heteroatom incorporation into the carbon lattice is explained using density functional theory calculations.
S. A. Evlashin; F. S. Fedorov; P. V. Dyakonov; Yu. M. Maksimov; A. A. Pilevsky; K. I. Maslakov; Yu. O. Kuzminova; Yu. A. Mankelevich; E. N. Voronina; S. A. Dagesyan; V. A. Pletneva; A. A. Pavlov; M. A. Tarkhov; I. V. Trofimov; Vladislav Zhdanov; N. V. Suetin; I. S. Akhatov. Role of Nitrogen and Oxygen in Capacitance Formation of Carbon Nanowalls. The Journal of Physical Chemistry Letters 2020, 11, 4859 -4865.
AMA StyleS. A. Evlashin, F. S. Fedorov, P. V. Dyakonov, Yu. M. Maksimov, A. A. Pilevsky, K. I. Maslakov, Yu. O. Kuzminova, Yu. A. Mankelevich, E. N. Voronina, S. A. Dagesyan, V. A. Pletneva, A. A. Pavlov, M. A. Tarkhov, I. V. Trofimov, Vladislav Zhdanov, N. V. Suetin, I. S. Akhatov. Role of Nitrogen and Oxygen in Capacitance Formation of Carbon Nanowalls. The Journal of Physical Chemistry Letters. 2020; 11 (12):4859-4865.
Chicago/Turabian StyleS. A. Evlashin; F. S. Fedorov; P. V. Dyakonov; Yu. M. Maksimov; A. A. Pilevsky; K. I. Maslakov; Yu. O. Kuzminova; Yu. A. Mankelevich; E. N. Voronina; S. A. Dagesyan; V. A. Pletneva; A. A. Pavlov; M. A. Tarkhov; I. V. Trofimov; Vladislav Zhdanov; N. V. Suetin; I. S. Akhatov. 2020. "Role of Nitrogen and Oxygen in Capacitance Formation of Carbon Nanowalls." The Journal of Physical Chemistry Letters 11, no. 12: 4859-4865.
NaCl is one of the simplest compounds, thought to be well understood, and yet, unexpected complexities related to it were uncovered at high pressure and in low-dimensional states. Here, exotic hexagonal NaCl thin films on the (110) diamond surface were crystallized in the experiment following a theoretical prediction based on ab initio evolutionary algorithm USPEX. State-of-the-art calculations and experiments showed the existence of a hexagonal NaCl thin film, which is due to strong chemical interaction of the NaCl film with the diamond substrate.
Kseniya A. Tikhomirova; Christian Tantardini; Ekaterina V. Sukhanova; Zakhar I. Popov; Stanislav A. Evlashin; Mikhail A. Tarkhov; Vladislav Zhdanov; Alexander A. Dudin; Artem R. Oganov; Dmitry G. Kvashnin; Alexander G. Kvashnin. Exotic Two-Dimensional Structure: The First Case of Hexagonal NaCl. The Journal of Physical Chemistry Letters 2020, 11, 3821 -3827.
AMA StyleKseniya A. Tikhomirova, Christian Tantardini, Ekaterina V. Sukhanova, Zakhar I. Popov, Stanislav A. Evlashin, Mikhail A. Tarkhov, Vladislav Zhdanov, Alexander A. Dudin, Artem R. Oganov, Dmitry G. Kvashnin, Alexander G. Kvashnin. Exotic Two-Dimensional Structure: The First Case of Hexagonal NaCl. The Journal of Physical Chemistry Letters. 2020; 11 (10):3821-3827.
Chicago/Turabian StyleKseniya A. Tikhomirova; Christian Tantardini; Ekaterina V. Sukhanova; Zakhar I. Popov; Stanislav A. Evlashin; Mikhail A. Tarkhov; Vladislav Zhdanov; Alexander A. Dudin; Artem R. Oganov; Dmitry G. Kvashnin; Alexander G. Kvashnin. 2020. "Exotic Two-Dimensional Structure: The First Case of Hexagonal NaCl." The Journal of Physical Chemistry Letters 11, no. 10: 3821-3827.
Developing bone scaffolds can greatly improve the patient’s quality of life by accelerating the rehabilitation process. In this paper, we studied the process of composite polycaprolactone supercritical foaming for tissue engineering. The influence of graphene oxide and reduced graphene oxide on the foaming parameters was studied. The structural and mechanical properties were studied. The scaffolds demonstrated mechanical flexibility and endurance. The co-culturing and live/dead tests demonstrated that the obtained scaffolds are biocompatible. Different composite scaffolds induced various surface cell behaviors. The experimental data demonstrate that composite foams are promising candidates for in vivo medical trials.
Stanislav Evlashin; Pavel Dyakonov; Mikhail Tarkhov; Sarkis Dagesian; Sergey Rodionov; Anastasia Shpichka; Mikhail Kostenko; Stepan Konev; Ivan Sergeichev; Petr Timashev; Iskander Akhatov. Flexible Polycaprolactone and Polycaprolactone/Graphene Scaffolds for Tissue Engineering. Materials 2019, 12, 2991 .
AMA StyleStanislav Evlashin, Pavel Dyakonov, Mikhail Tarkhov, Sarkis Dagesian, Sergey Rodionov, Anastasia Shpichka, Mikhail Kostenko, Stepan Konev, Ivan Sergeichev, Petr Timashev, Iskander Akhatov. Flexible Polycaprolactone and Polycaprolactone/Graphene Scaffolds for Tissue Engineering. Materials. 2019; 12 (18):2991.
Chicago/Turabian StyleStanislav Evlashin; Pavel Dyakonov; Mikhail Tarkhov; Sarkis Dagesian; Sergey Rodionov; Anastasia Shpichka; Mikhail Kostenko; Stepan Konev; Ivan Sergeichev; Petr Timashev; Iskander Akhatov. 2019. "Flexible Polycaprolactone and Polycaprolactone/Graphene Scaffolds for Tissue Engineering." Materials 12, no. 18: 2991.
Cycling stability and specific capacitance are the most critical features of energy sources. Nitrogen incorporation in crystalline carbon lattice allows to increase the capacitance without increasing the mass of electrodes. Despite the fact that many studies demonstrate the increase in the capacitance of energy sources after nitrogen incorporation, the mechanism capacitance increase is still unclear. Herein, we demonstrate the simple approach of plasma treatment of carbon structures, which leads to incorporation of 3 at.% nitrogen into Carbon NanoWalls. These structures have huge specific surface area and can be used for supercapacitor fabrication. After plasma treatment, the specific capacitance of Carbon NanoWalls increased and reached 600 F g-1. Moreover, we made a novel DFT simulation which explains the mechanism of nitrogen incorporation into the carbon lattice. This work paves the way to develop flexible thin film supercapacitors based on carbon nanowalls.
Stanislav A. Evlashin; Yurii M. Maksimov; Pavel V. Dyakonov; Andrey A. Pilevsky; Konstantin I. Maslakov; Yuri A. Mankelevich; Ekaterina N. Voronina; Sergei V. Vavilov; Alexander A. Pavlov; Elena V. Zenova; Iskander S. Akhatov; Nikolay V. Suetin. N-Doped Carbon NanoWalls for Power Sources. Scientific Reports 2019, 9, 6716 .
AMA StyleStanislav A. Evlashin, Yurii M. Maksimov, Pavel V. Dyakonov, Andrey A. Pilevsky, Konstantin I. Maslakov, Yuri A. Mankelevich, Ekaterina N. Voronina, Sergei V. Vavilov, Alexander A. Pavlov, Elena V. Zenova, Iskander S. Akhatov, Nikolay V. Suetin. N-Doped Carbon NanoWalls for Power Sources. Scientific Reports. 2019; 9 (1):6716.
Chicago/Turabian StyleStanislav A. Evlashin; Yurii M. Maksimov; Pavel V. Dyakonov; Andrey A. Pilevsky; Konstantin I. Maslakov; Yuri A. Mankelevich; Ekaterina N. Voronina; Sergei V. Vavilov; Alexander A. Pavlov; Elena V. Zenova; Iskander S. Akhatov; Nikolay V. Suetin. 2019. "N-Doped Carbon NanoWalls for Power Sources." Scientific Reports 9, no. 1: 6716.
The ions Pb2+ present in solution during the galvanic displacement of lead by platinum strongly affect the composition, structure, and electrocatalytic properties of Pt0(Pb) composites.
Yurii M. Maksimov; Boris I. Podlovchenko; Dmitry Volkov; Konstantin I. Maslakov; Stanislav A. Evlashin. Effect of Pb2+ ions in solution on the galvanic displacement of lead by platinum. Mendeleev Communications 2019, 29, 83 -85.
AMA StyleYurii M. Maksimov, Boris I. Podlovchenko, Dmitry Volkov, Konstantin I. Maslakov, Stanislav A. Evlashin. Effect of Pb2+ ions in solution on the galvanic displacement of lead by platinum. Mendeleev Communications. 2019; 29 (1):83-85.
Chicago/Turabian StyleYurii M. Maksimov; Boris I. Podlovchenko; Dmitry Volkov; Konstantin I. Maslakov; Stanislav A. Evlashin. 2019. "Effect of Pb2+ ions in solution on the galvanic displacement of lead by platinum." Mendeleev Communications 29, no. 1: 83-85.
Stanislav A. Evlashin; Sergey E. Svyakhovskiy; Fedor S. Fedorov; Yuri A. Mankelevich; Pavel V. Dyakonov; Nikita V. Minaev; Sarkis A. Dagesyan; Konstantin I. Maslakov; Roman A. Khmelnitsky; Nikolay V. Suetin; Iskander S. Akhatov; Albert G. Nasibulin. Ambient Condition Production of High Quality Reduced Graphene Oxide. Advanced Materials Interfaces 2018, 5, 1 .
AMA StyleStanislav A. Evlashin, Sergey E. Svyakhovskiy, Fedor S. Fedorov, Yuri A. Mankelevich, Pavel V. Dyakonov, Nikita V. Minaev, Sarkis A. Dagesyan, Konstantin I. Maslakov, Roman A. Khmelnitsky, Nikolay V. Suetin, Iskander S. Akhatov, Albert G. Nasibulin. Ambient Condition Production of High Quality Reduced Graphene Oxide. Advanced Materials Interfaces. 2018; 5 (19):1.
Chicago/Turabian StyleStanislav A. Evlashin; Sergey E. Svyakhovskiy; Fedor S. Fedorov; Yuri A. Mankelevich; Pavel V. Dyakonov; Nikita V. Minaev; Sarkis A. Dagesyan; Konstantin I. Maslakov; Roman A. Khmelnitsky; Nikolay V. Suetin; Iskander S. Akhatov; Albert G. Nasibulin. 2018. "Ambient Condition Production of High Quality Reduced Graphene Oxide." Advanced Materials Interfaces 5, no. 19: 1.
Reduced graphene oxide (GO) becomes one of the most popular materials for applications in various optical, electronic, and sensor devices. Even though many methods are already reported for reduced graphene oxide synthesis, they usually raise issues related to their efficiency, quality, and environmental impact. This work demonstrates a simple, environmental friendly, and effective method for reducing graphene oxide under ambient conditions using nanosecond infrared laser irradiation. As a result, a Raman band intensity ratio of I(G)/I(D) of 4.59 is achieved with an average crystallite size of ≈90 nm. This graphene is of higher quality than what can be achieved with most of the existing methods. Additionally, the demonstrated reduction technique allows the selective reduction of graphene oxide and control the amount of functional groups on the surface of the material. Gas sensors fabricated according to the proposed technique efficiently detect NO2, NH3, and H2S with the sensitivity down to 10 ppm.
Stanislav A. Evlashin; Sergey E. Svyakhovskiy; Fedor S. Fedorov; Yuri A. Mankelevich; Pavel V. Dyakonov; Nikita V. Minaev; Sarkis A. Dagesyan; Konstantin I. Maslakov; Roman A. Khmelnitsky; Nikolay V. Suetin; Iskander S. Akhatov; Albert G. Nasibulin. Ambient Condition Production of High Quality Reduced Graphene Oxide. Advanced Materials Interfaces 2018, 5, 1 .
AMA StyleStanislav A. Evlashin, Sergey E. Svyakhovskiy, Fedor S. Fedorov, Yuri A. Mankelevich, Pavel V. Dyakonov, Nikita V. Minaev, Sarkis A. Dagesyan, Konstantin I. Maslakov, Roman A. Khmelnitsky, Nikolay V. Suetin, Iskander S. Akhatov, Albert G. Nasibulin. Ambient Condition Production of High Quality Reduced Graphene Oxide. Advanced Materials Interfaces. 2018; 5 (18):1.
Chicago/Turabian StyleStanislav A. Evlashin; Sergey E. Svyakhovskiy; Fedor S. Fedorov; Yuri A. Mankelevich; Pavel V. Dyakonov; Nikita V. Minaev; Sarkis A. Dagesyan; Konstantin I. Maslakov; Roman A. Khmelnitsky; Nikolay V. Suetin; Iskander S. Akhatov; Albert G. Nasibulin. 2018. "Ambient Condition Production of High Quality Reduced Graphene Oxide." Advanced Materials Interfaces 5, no. 18: 1.
Reconfigurability of integrated photonic chips plays a key role in current experiments in the area of linear-optical quantum computing. We demonstrate a reconfigurable multiport interferometer implemented as a femtosecond laser-written integrated photonic device. The device includes a femtosecond laser-written $4\times 4$ multiport interferometer equipped with 12 thermooptical phase shifters, making it a universal programmable linear-optical circuit. We achieve a record fast switching time for a single nested Mach-Zender interferometer of $\sim10$ ms and quantitatively analyse the reconfigurability of the optical circuit. We believe, that our results will improve the current state of quantum optical experiments utilizing femtosecond laser-written photonic circuits.
Ivan Dyakonov; Ivan Pogorelov; Ivan Bobrov; Alexander Kalinkin; Pavel Dyakonov; Stanislav Evlashin; Stanislav Straupe; Sergei Kulik. Reconfigurable photonics on a glass chip. 2018, 1 .
AMA StyleIvan Dyakonov, Ivan Pogorelov, Ivan Bobrov, Alexander Kalinkin, Pavel Dyakonov, Stanislav Evlashin, Stanislav Straupe, Sergei Kulik. Reconfigurable photonics on a glass chip. . 2018; ():1.
Chicago/Turabian StyleIvan Dyakonov; Ivan Pogorelov; Ivan Bobrov; Alexander Kalinkin; Pavel Dyakonov; Stanislav Evlashin; Stanislav Straupe; Sergei Kulik. 2018. "Reconfigurable photonics on a glass chip." , no. : 1.
Reduced graphene oxide becomes one of the most popular materials for applications in various optical, electronic and sensor devices. Even though many methods have been already reported for reduced graphene oxide synthesis, they usually rise issues related to their efficiency, quality and environmental impact. This work demonstrates a simple, environmentally friendly and effective method for reducing graphene oxide under ambient conditions using nanosecond infrared laser irradiation. As a result, a Raman band intensity ratio of I(G)/I(D) of 4.59 was achieved with an average crystallite size of ~90 nm. This graphene is of higher quality than what can be achieved with most of the existing methods. Additionally, the demonstrated reduction technique allows the selective reduction of graphene oxide and control the amount of functional groups on the surface of the material. Gas sensors fabricated according to the proposed technique efficiently detect NO$_2$, NH$_3$, and H$_2$S with the sensitivity down to 10 ppm.
Sergey E. Svyakhovskiy; Fedor S. Fedorov; Yuri A. Mankelevich; Pavel V. Dyakonov; Nikita V. Minaev; Sarkis A. Dagesyan; Konstantin I. Maslakov; Roman A. Khmelnitsky; Nikolay V. Suetin; Albert G. Nasibulin; Iskander Sh. Akhatov; Stanislav A. Evlashin. Ambient condition production of high quality reduced graphene oxide. 2018, 1 .
AMA StyleSergey E. Svyakhovskiy, Fedor S. Fedorov, Yuri A. Mankelevich, Pavel V. Dyakonov, Nikita V. Minaev, Sarkis A. Dagesyan, Konstantin I. Maslakov, Roman A. Khmelnitsky, Nikolay V. Suetin, Albert G. Nasibulin, Iskander Sh. Akhatov, Stanislav A. Evlashin. Ambient condition production of high quality reduced graphene oxide. . 2018; ():1.
Chicago/Turabian StyleSergey E. Svyakhovskiy; Fedor S. Fedorov; Yuri A. Mankelevich; Pavel V. Dyakonov; Nikita V. Minaev; Sarkis A. Dagesyan; Konstantin I. Maslakov; Roman A. Khmelnitsky; Nikolay V. Suetin; Albert G. Nasibulin; Iskander Sh. Akhatov; Stanislav A. Evlashin. 2018. "Ambient condition production of high quality reduced graphene oxide." , no. : 1.
Here we report on a comparative analysis of laser techniques for detection and speciation of radionuclides and its complexes in the geosphere. The application of different methods is illustrated by the example of uranium(VI) speciation in aqueous environment and detection of trace elements on the ppm level in gases, which appear as a result of reprocessing of spent nuclear fuel.
B. P. Yakimov; G. S. Budylin; V. G. Petrov; V. V. Fadeev; S. N. Kalmykov; S. A. Evlashin; E. A. Shirshin. A Comparative Analysis of Optical Methods for Detection and Prediction of Radionuclides Migration in the Geosphere. Geochemistry of Chromium in the Earth’s Mantle 2018, 289 -297.
AMA StyleB. P. Yakimov, G. S. Budylin, V. G. Petrov, V. V. Fadeev, S. N. Kalmykov, S. A. Evlashin, E. A. Shirshin. A Comparative Analysis of Optical Methods for Detection and Prediction of Radionuclides Migration in the Geosphere. Geochemistry of Chromium in the Earth’s Mantle. 2018; ():289-297.
Chicago/Turabian StyleB. P. Yakimov; G. S. Budylin; V. G. Petrov; V. V. Fadeev; S. N. Kalmykov; S. A. Evlashin; E. A. Shirshin. 2018. "A Comparative Analysis of Optical Methods for Detection and Prediction of Radionuclides Migration in the Geosphere." Geochemistry of Chromium in the Earth’s Mantle , no. : 289-297.
Vladimir Yusupov; V S Zhigar'Kov; E S Churbanova; E A Chutko; S A Evlashin; M V Gorlenko; Vladimir Cheptsov; Nickolay Minaev; V N Bagratashvili. Laser-induced transfer of gel microdroplets for cell printing. Quantum Electronics 2017, 47, 1158 -1165.
AMA StyleVladimir Yusupov, V S Zhigar'Kov, E S Churbanova, E A Chutko, S A Evlashin, M V Gorlenko, Vladimir Cheptsov, Nickolay Minaev, V N Bagratashvili. Laser-induced transfer of gel microdroplets for cell printing. Quantum Electronics. 2017; 47 (12):1158-1165.
Chicago/Turabian StyleVladimir Yusupov; V S Zhigar'Kov; E S Churbanova; E A Chutko; S A Evlashin; M V Gorlenko; Vladimir Cheptsov; Nickolay Minaev; V N Bagratashvili. 2017. "Laser-induced transfer of gel microdroplets for cell printing." Quantum Electronics 47, no. 12: 1158-1165.