bluuebunny/crossref_metadata_2025_split huggingface dataset:
Cyclotron motion without magnetic field
Authors: Hasdeo Eddwi H , Frenzel Alex J , Song Justin C W 
Published: August 2019

Abstract
Non-trivial Bloch band overlaps endow rich phenomena to a wide variety of quantum materials. The most prominent example is a transverse current in the absence of a magnetic field (i.e. the anomalous Hall effect). Here we show that, in addition to a dc Hall effect, anomalous Hall materials possess circulating currents and cyclotron motion without magnetic field. These are generated from the intricate wavefunction dynamics within the unit cell. Curiously, anomalous cyclotron motion exhibits an intrinsic decay in time (even in pristine materials) displaying a characteristic power law decay. This reveals an intrinsic dephasing similar to that of inhomogeneous broadening of spins. Circulating currents can manifest as the emission of circularly polarized light pulses in response to an incident linearly polarized (pulsed) electric field, and provide a direct means of interrogating a type of Zitterbewegung of quantum materials with broken time reversal symmetry.
Fault-tolerant preparation of approximate GKP states
Authors: Shi Yunong , Chamberland Christopher , Cross Andrew 
Published: August 2019

Abstract
Gottesman–Kitaev–Preskill (GKP) states appear to be amongst the leading candidates for correcting errors when encoding qubits into oscillators. However the preparation of GKP states remains a significant theoretical and experimental challenge. Until now, no clear definitions for fault-tolerantly preparing GKP states have been provided. Without careful consideration, a small number of faults can lead to large uncorrectable shift errors. After proposing a metric to compare approximate GKP states, we provide rigorous definitions of fault-tolerance and introduce a fault-tolerant phase estimation protocol for preparing such states. The fault-tolerant protocol uses one flag qubit and accepts only a subset of states in order to prevent measurement readout errors from causing large shift errors. We then show how the protocol can be implemented using circuit QED. In doing so, we derive analytic expressions which describe the leading order effects of the nonlinear dispersive shift and Kerr nonlinearity. Using these expressions, we show that to mitigate the nonlinear dispersive shift and Kerr terms would require the protocol to be implemented on time scales four orders of magnitude longer than the time scales relevant to the protocol for physically motivated parameters. Despite these restrictions, we numerically show that a subset of the accepted states of the fault-tolerant phase estimation protocol maintain good error correcting capabilities even in the presence of noise.
Investigation of ultrathin carbon film growth and etching by in-situ X-ray reflectivity
Authors: Baranov A M , Ivanov I I 
Published: August 2019

Abstract
The results of studies of carbon films in the process of their growth and etching in plasma of radio-frequency discharge in real time by in-situ X-ray reflectometry are presented. The film thickness, growth rate, density and surface roughness were calculated from the time dependence of the reflection coefficient of x-rays at a wavelength of 1.54 A. A method for the production of carbon films with a super-smooth surface was proposed.
Study of the stress state in coated bodies on the layer separation boundary under contact interaction
Authors: Chebakov M I , Danilchenko S A 
Published: August 2019

Abstract
The issue of stress state in coated bodies is a persistent problem in mechanical engineering and materials science that has congregated numerous efforts, both from experimental and fundamental points of view. The given paper concentrates on the contact problem considering the interaction between a punch and a dual-layered strip base that serves as a model of the interaction between loaded coating and the substrate. It also suggests strategies for applying analytical approaches and using the finite element method to solve the set of goals. The calculations and conducted study of the stress state in the base at the layer interface demonstrate that tensile normal stresses occur at the layer interface, which can lead to the top-layer delamination from the bottom one.
Investigation of physical-mechanical and tribological properties of suspensions of nanoparticles based on polyethylsiloxane liquid
Authors: Dembelova T S , Badmaev B B , Makarova D N 
Published: August 2019

Abstract
The study of the physical-mechanical properties of suspensions of silica dioxide nanoparticles and fullerenes in polyethylsiloxane liquid was carried out. The shear modulus and effective viscosity of nanosuspensions were determined by the acoustical resonance method, the coefficient of friction with the base polyethylsiloxane lubricant and modified lubricants was determined, and an improvement of the tribological properties of the synthesized suspensions was shown due to increasing the strength of the lubricating film.
Vibroacoustic monitoring of the intermetallic phase formation when electron-beam technology surface alloying
Authors: Fedorov S V , Kozochkin M P , Maung T H , Swe M H 
Published: August 2019

Abstract
Synthesis of intermetallic phases of AlNi system using surface alloying technology on the surface of aluminum alloy products is not highly stable, so it seems appropriate to use diagnostic systems. In such cases, the method of vibroacoustic signal registration can be used, since it allows to control the kinetics of the process and phase transformations associated with the change in volume. Under the action of a low-energy high-current electron beam, the appearance of a vibroacoustic wave is due to the effect of thermoelasticity in a thin surface layer capable of providing a reaction of self-propagating high-temperature synthesis between a thin film of a titanium or nickel alloy and an aluminum substrate. Tracking changes in the effective value of the vibroacoustic signal make it possible to clearly state the formation of the intermetallic phase and select rational modes of irradiation.
Strengthening of cutting tools using beams of fast neutral atoms in a low-pressure gas discharge plasma
Authors: Grigoriev S , Volosova M , Metel A , Melnik Y , Mustafaev E , Nay H A 
Published: August 2019

Abstract
The surface of a 26-mm-diameter reamer made of AISI M2 high-speed steel has been nitrided in a low-pressure glow discharge plasma. Then a 3-μm-thick wear-resistant TiN coating has been magnetron sputtered on the hardened surface. After the combined processing the reamer’s cutting edges radii grew from the initial value of ∼8 μm up to ∼37 μm. The reason for the strengthened tool blunting is selective sputtering of the edges by heating ions accelerated from the plasma. Another reamer under nitriding was heated by a beam of fast atoms arriving at the tool surface from an immersed in the plasma concave grid negatively biased to 6 kV. Due to the uniform sputtering of the tool surface by the beam, the edges radii after nitriding and 3-μm-thick TiN coating deposition did not exceed the initial value.
The study of powder coatings based on Al and Ni, obtained by supersonic plasma spraying
Authors: Ilinykh S A , Sarsadskih K I , Chusov S A , Korolev O A , Achmetshin S M , Krashaninin V A 
Published: August 2019

Abstract
In present research are presented the results of the study and evaluation of the strength characteristics of Al and Ni-Al coatings applied by supersonic plasma spraying on plastic and aluminum substrates. The spraying of coatings with various compositions was carried out on the supersonic plasma unit. It is shown that the coating is sufficiently strong, it also has satisfactory corrosion resistance and has sufficient shielding effectiveness against electromagnetic radiation. The screening efficiency was measured by the ZVA 24 VectorNetworkAnalyzer.
Modification of metal surface under the radiation exposure in the atomic-scale
Authors: Ivchenko V A 
Published: August 2019

Abstract
Modification of the surface structure by radiation exposure in metallic materials was investigated by field ion microscopy. Irradiation regimes for the formation of amorphized and nanostructured states in the near-surface platinum regions were determined. Established modes of radiation processing of engineering alloys Pd50Cu30Ag20 to obtain in the near-surface volume structures like microduplex-type structure (the particle size of the phases to 100 nm) with the required combination of properties.
On the mechanism of pore formation in pyrolized polyacrylonitrile
Authors: Kakorina O A , Zaporotskova I V , Kozhitov L V , Popkova A V 
Published: August 2019

Abstract
The paper presents a study of the possibilities and mechanisms of pore formation (based on vacancy defects) in single-layer and two-layer pyrolyzed polyacrylonitrile. The geometrical and electronic-energy characteristics are described, the effect of the number of PPAN layers on the processes under consideration is studied. Theoretical calculations were performed using the molecular cluster model and the quantum chemical method MNDO.
Simulation of the performance properties of cutting tools with coatings for specified operating conditions
Authors: Kirichek A V , Mokritsky B Y , Morozova A V 
Published: August 2019

Abstract
The paper presents the results of solving the problem of choosing a cutting tool with coatings for the given conditions of its subsequent operation using the capabilities of computer modeling of the architecture of coatings of hard-alloy tool materials. The results of the predictive tool material design for the specified operating conditions with a high degree of reliability allow us to evaluate the performance of tool materials in actual operating conditions. The developed computer models of cutting tools multilayer coatings are adequate, and the results of the calculations correspond to the experimental data obtained under the specified operating conditions of the tools. The novelty of the proposed approach consists in the development of the methodological foundations for the design of multilayer coatings of tools based on the analysis of computer simulation results of its stress-strain state during the cutting process.
Development of calcium phosphate coatings with regulated porous structure as drug carrier systems
Authors: Komarova E G , Sedelnikova M B , Kondranova A M , Kazantsev S O , Sharkeev Yu P 
Published: August 2019

Abstract
The calcium phosphate coatings were formed by the micro-arc oxidation method under different applied voltage. It was shown that the thickness, surface roughness, porosity and sizes of the structural elements of the coatings increased with increasing of the applied voltage. In addition, the increase in the voltage led to the structural-phase transformation in the coatings from the amorphous state to the amorphous-crystalline state with incorporation of CaHPO4, α-Ca2P2O7, β-Ca2P2O7 and TiO2 (anatase) nano-sized phases. The micro-porous amorphous coatings formed at a low voltage of 200 V showed the highest adsorption of the doxorubicin. The formed coatings with regulated porous structure and specified phase composition can be used as anticancer (e.g., doxorubicin) drug carrier systems.
The change in the elastic modulus values for the thickness of a multilayer coating based on TiN and CrN layers
Authors: Kuznetsova T A , Lapitskaya V A , Shabliuk A V , Warcholinski B , Gilewicz A , Chizhik S A , Aizikovich S M , Mitrin B I , Krenev L I 
Published: August 2019

Abstract
The results of investigations the cross section microstructure of a multilayer coating with a thickness of about 6 μm obtained by cathode arc evaporation, are presented. The top layer of the coating is TiN with a thickness of 200 nm, and the base consists of alternating layers of CrN and CrCN with a thickness of 200 nm per layer. Microhardness (H) and elasticity modulus of (E) were measured on the coating surface, on the CrN / CrCN layer surface, and over the cross section of the coating by nanoindentation (NI). It is established that the E values gradient from the surface with E = 313 GPa to the substrate with E = 176 GPa is smooth. The critical load of adhesive strength of the coating determined in the scratch test was 120 N.
The effect of the titanium surface layer thickness on the characteristics of a layered composite material
Authors: Nasakina E O , Sudarchikova M A , Demin K Yu , Gol’dberg M A , Baskakova M I , Tsareva A M , Ustinova Yu N , Leonova Yu O , Sevost’yanov M A 
Published: August 2019

Abstract
Nano- and micro-dimensional surface layers of titanium on flat and wire NiTi substrates were obtained. The structure and composition of the samples was determined using SEM, AES, Auger spectroscopy and X-ray diffraction. With increasing deposition time, the thickness of the surface layer increases nonlinearly. The transition layer provides high adhesion of the surface layer to the substrate.
The tribological characteristics and structural state of Ti-Al-Si-Cu-N coatings in temperature range test to 300 ºC
Authors: Ovchinnikov S V 
Published: August 2019

Abstract
The study of tribological characteristics and the structural state of Ti-Al-Si-Cu-N gradient-layer coatings has found that, for temperatures up to 100 °C, these coatings are subject to abrasive and oxidative wear. Increase in their coefficient of friction is associated with cracking, tribofilm formation, and delamination of tribofilm and coating, with the formation of track relief due to localization of substrate deformation. An increase in the test temperature to 300 °C results in adhesive wear.
Formation of transition gradient layers in the process of creating a surface composite “steel-coating (Al, Al-N)” at VIP treatment
Authors: Petrov L M , Grigorovich K V , Sprygin G S , Ivanchuk S B , Smirnova A N , Semenov V D 
Published: August 2019

Abstract
The regularities of the formation of gradient layers in the process of applying coatings on steel by the vacuum ion-plasma method when the ratios of the elements of the gas flow of a metallic plasma are studied. It was shown that the interaction of Al-based plasma flows with the sample surface produces single-layer and multi-layer coatings of Al and Al-N systems, in which the processes of direct and inverse diffusion of the coating and substrate elements occur.
Plasma way for oxide nanoparticles obtaining
Authors: Safronov A A , Kuznetsov V E , Dudnik Yu D , Shiryaev V N , Vasilieva O B 
Published: August 2019

Abstract
The paper deals with various designs of alternating current plasma torches that can be used in the technological cycle for production of nanoscale materials. The results of experimental studies on the production of ultrafine powders of metal oxides (iron and aluminum) by plasma methods with the help of a laboratory installation based on an alternating current plasma torch are presented.
Study of the additional strengthening treatment impact on structural parameters and mechanical properties of coatings based on nitrides of niobium, titanium, zirconium and aluminum
Authors: Sizov S V , Tabakov V P , Chikhranov A V , Bobrovskij I N , Adakin V A 
Published: August 2019

Abstract
In this paper results of the impulse laser processing impact on structural parameters and mechanical properties of coatings based on nitrides of niobium, titanium, zirconium and aluminum are set out. Structures of multilayer coatings are suggested and the utilization efficiency of carbide-tipped tools with engineered coatings is shown.
Films and fractal units under cathode disposal of titanium
Authors: Smolanov N A 
Published: August 2019

Abstract
Analysis of the processes in the cathode spot of the vacuum arc were carried out. Possibly, these processes lead to the formation and growth of fractal aggregates from arc discharge plasma. The results obtained in the study of the structure of dust particles of the arc discharge plasma underlie the hypothesis. One of the possible reasons for the formation of fractal structures is the occurrence of current sheets and droplet spots when cathode spots approach each other.
Effect of post annealing on properties of N-doped TiO2 films deposited by reactive magnetron sputtering
Authors: Sun Zhilei , Evdokimov K E , Konishchev M E , Kuzmin O S , Pichugin V F 
Published: August 2019

Abstract
The paper studies the effect of annealing on the structure and properties of N-doped TiO2 films, deposited by reactive magnetron sputtering. An increase in the annealing temperature results in a reduction of the film thickness and a rise of the refractive index. The post annealing induces the anatase-rutile phase transition and also leads to band gap narrowing and wettability transition.
Wear nucleation in vacuum ion-plasma coatings and methods of its assessment
Authors: Varavka V N , Kudryakov O V , Morozkin I S , Zabiyaka I Yu , Bronnikova N I 
Published: August 2019

Abstract
The paper discusses coatings of different composition and structure. The object of the study was the stage of nucleation wear of the coatings. Coatings up to 10–12 μm thick were obtained by ion-plasma deposition in a vacuum. The analytical part of the work is based on the theory of dislocations. This made it possible to create a computational model of the stage of nucleation of wear under conditions of cyclical impacts, which is problematically identified by instrumental methods. The comparison of calculated data with experimental data are given.
Ion-vacuum technology for manufacturing elements for nanogradient optics and metamaterials
Authors: Volpian O D , Kuzmichev A I , Churikov D V 
Published: August 2019

Abstract
The technology and the automated ion-plasma vacuum equipment for the manufacture of thin film elements for nanogradient optics and metamaterials by the method of physico-chemical synthesis of coatings from oxides and nitrides is presented. The technology is based on the mid-frequency pulse magnetron ion sputtering of two solid metal targets with ion bombardment of substrates and high-frequency induction-plasma activation of reaction gases.
The peculiarities of surface cladding by laser metal deposition of AISI304 steel
Authors: Zavalov Y N , Dubrov A V , Makarova E S , Dubrov V D 
Published: August 2019

Abstract
The study of the cladding process with the laser metal deposition (LMD) equipment was carried out. The experimental results of the tracks formation on the surface of AISI 304 stainless steel are presented. The technological regimes of LMD are shown, samples of coatings are obtained, measurements of the geometric characteristics of the samples are carried out.
Study of Correlation of Residential and Industrial Growth Pattern in Semarang City to the Aquifer Capacity Changes in the Year 2014-2017
Authors: Prasetyo Yudo , Bashit Nurhadi , Simarsoit Yonanda 
Published: August 2019

Abstract
The growth of urban areas dominated by residential and industrial land cover will encourage the high use of clean water and land loading (compaction due to building loads). The use of water in people’s daily lives and industrial activities still relies on nature, namely in the form of groundwater or aquifers. Continuous water collection, especially in big cities in Indonesia, will have a negative impact on the environment which results in changes in the environment itself. Environmental changes due to the impact of taking water that might occur are land subsidence (LS). For this reason, this study will examine the relationship of the impact of the development of residential areas in the city of Semarang on the decline of shallow aquifer capacity (SAC), deep aquifer capacity (DAC) and (LS). Observation of changes in SAC in this study was observed in the type of shallow aquifer using shallow wells (SA) data. For the growth of the residential area of Semarang will be focused on the land cover of residential and industrial areas in the 2014-2017 period. The overlapping method is used to correlate the effect of changes in shallow and deep aquifer capacity in Semarang City. The results of this study get the correlation value of changes in shallow aquifer depth and settlement has a very high correlation from 2014 to 2018 with the percentage always above 50%. From 2014 to 2015 the correlation of shallow aquifer with settlements was 73.78%, from 2015 to 2016 86.88%, from 2016 to 2017 53.69% and in 2017 to 2018 61.54%. The level of correlation of changes in the depth of the deep aquifer level with the industrial area has a low correlation with a large correlation coefficient of only 0.02322. For the direction of the growth of residential areas and industries have a positive correlation with the capacity of the deep and shallow aquifers where the direction of growth of the region follows the pattern extending along the main roads in the city of Semarang.
Rainfall erosivity in climate changes and the connection to landslide events
Authors: Ahmad A , Lopulisa C , Imran A M , Baja S 
Published: August 2019

Abstract
Climate anomalies lead to changes in rainfall patterns in Indonesia. Climate change has an impact on the increase in seasonal rainfall in December, January, and February, significantly in most areas in Java, Sulawesi, and Eastern Indonesia. Changes in the pattern of rainfall in Indonesia, especially for the sloping area of South Sulawesi, have resulted in increasing intensity of landslides. The objective of this study was to determine changes in rainfall patterns and erosivity that occur in East Luwu District which have an impact on landslide events. Rainfall data used from 1979 to 2017, erosivity value (R-factor) with Lenvain equation, IDW interpolation aplication are used for resulting erosivity map. Data from land cover, geology and soil are used as supporting data in the assessment of landslide events. Changes in the rainfall pattern since 1998-2017, as a result of global climate change, have resulted in increasing rainfall ability to erode the soil. Rainfall erosivity increased by 22% in 1999-2008, and increased to 33% in 2009-2017, most of the study areas in the last 10 years (2007-2017) have erosivity values (R-factor) >200 with high landslides activitty. The high level of rainfall erosivity could be reflected to the high level of climate variability as climate change phenomenon.