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Journal articles on the topic 'Raster electron microscopy method'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

Holm, Jason. "A Brief Overview of Scanning Transmission Electron Microscopy in a Scanning Electron Microscope." EDFA Technical Articles 23, no. 4 (2021): 18–26. http://dx.doi.org/10.31399/asm.edfa.2021-4.p018.

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Abstract This article provides a brief overview of STEM-in-SEM, discussing the pros and cons, recent advancements in detector technology, and the emergence of 4D STEM-in-SEM, a relatively new method that uses diffraction patterns recorded at different raster positions to enhance images offline in selected regions of interest.

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2

Duchac, Alfred, and Pavel Kejzlar. "Optimization of Raster Point Deposition Methodology for Deformation Analyses." Materials Science Forum 1081 (March 24, 2023): 155–60. http://dx.doi.org/10.4028/p-2d795t.

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Deformation analysis of sheet metal parts helps to map the distribution of deformation zones during pressing in problematic areas of the car bodywork. This allows to solve and prevent production problems at the press shop. The present work is focused on the optimization of the process by point pattern deposition on hot-dip galvanized metal sheets for deformation analyses. Obtained data are evaluated by GOM Argus system. Two technologies of the pattern deposition, namely electrochemical and laser are compared. Both deposition methods behave differently in the forming process and show different

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Silaev, I. V., I. N. Goncharov, T. T. Magkoev, and T. I. Radchenko. "Method and Implementation of High-Performance Diagnostics of Form of Electron Probe of Raster Electron Microscope." Proceedings of Universities. ELECTRONICS 25, no. 6 (2020): 497–504. http://dx.doi.org/10.24151/1561-5405-2020-25-6-497-504.

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An important unit of an electron microscope is the system controlling the electron beam, responsible for raster forming on the specimen and the electron probe focusing, which provides an achievement of minimum of aberrations and the maximum of resolving capacity of formed electron image. During using electron microscope the image quality gradually deteriorates, manifesting the resolving capacity reduction and the astigmatism appearance. An attachment developed for the raster electron microscope, permitting to perform the highly effective diagnostics of the configuration of the scanning electro

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McDonald, Alison, William B. Amos, and Gail McConnell. "Electron Microscopic Measurement of the Size of the Optical Focus in Laser Scanning Microscopy." Microscopy and Microanalysis 18, no. 3 (2012): 596–602. http://dx.doi.org/10.1017/s1431927612000311.

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AbstractWe describe a method for measuring the lateral focal spot size of a multiphoton laser scanning microscope (LSM) with unprecedented accuracy. A specimen consisting of an aluminum film deposited on a glass coverslip was brought into focus in a LSM and the laser intensity was then increased enough to perform nanoablation of the metal film. This process leaves a permanent trace of the raster path usually taken by the beam during the acquisition of an optical image. A scanning electron microscope (SEM) was then used to determine the nanoablated line width to high accuracy, from which the la

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Balinyan, T., L. Derecha, and Yu Nosatenko. "TO THE QUESTION OF AN INTEGRATED RESEARCH OF BIOLOGICAL DAMAGE TO FIBROUS MATERIALS BY THE METHOD OF RASTER ELECTRON MICROSCOPY." Theory and Practice of Forensic Science and Criminalistics 20, no. 2 (2019): 522–34. http://dx.doi.org/10.32353/khrife.2.2019.41.

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The article considers the need for a comprehensive study of biological damage to fibrous materials by scanning electron microscopy. The main types and characteristics of fibers and fibrous materials, their types of damage, in particular, biological, and the mechanism of their formation are described. It is shown that with modern methods for studying morphological characteristics, the most effective is the method of scanning electron microscopy, which makes it possible to directly study the object in a wide range of magnifications. The use of scanning electron microscopy makes it possible to id

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Kolunin, Alexander V. "The analysis of the watered engine oil sludge." Tractors and Agricultural Machinery 89, no. 4 (2023): 287–92. http://dx.doi.org/10.17816/0321-4443-105492.

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BACKGROUND: Researches in the field of engine oils sludging take its origin from 1955. Scientists from different countries were searching for the reasons, defining consequences, building a chain of cause-effect links. Researchers have found that sludge represents a complex of compounds with low aggregative stability, such as: the additives inserted into a basis during production, partially oxidised fuel fractions subjected to thermal destruction, products of thermo-oxidative transformations of oil hydrocarbons. A number of factors stimulate transient processes of products with low aggregative

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Gudkova, A. A., A. S. Chistyakova, D. A. Sinetskaya, A. I. Slivkin, A. S. Bolgov, and M. A. Bolgova. "Scanning Electron Microscopy in the Analysis of Species of the Genus Persicaria Mill." Drug development & registration 11, no. 1 (2022): 99–105. http://dx.doi.org/10.33380/2305-2066-2022-11-1-99-105.

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Introduction. Scanning electron microscopy acts as a promising method of analysis, allowing to describe in detail the identification features of closely related plant species, as well as to conduct micro-roentgenstructural analysis of the sample in the selected area with high accuracy. The method is used to study the morphology of the surface and express determination of the composition of elements in various fields (physics, materials science, medicine, however, the use of the method of scanning/raster electron microscopy for the analysis of plant raw materials in pharmacy is limited.Aim. The

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8

Ammosov, R. M., A. I. Kozlitin, and A. V. Nikitin. "High-precision method of measuring linear dimensions in a raster electron microscope." Measurement Techniques 37, no. 6 (1994): 613–17. http://dx.doi.org/10.1007/bf00978312.

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V.G., Shevchenko, Eselevich D.A., Popov N.A., Kuznetsov D.K., and Shur V.Ya. "Investigation of the surface morphology of ASD-4 powder, modified by V2O5." International Journal of Engineering Research & Science 4, no. 4 (2018): 18–23. https://doi.org/10.5281/zenodo.1238748.

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<strong><em>Abstract</em></strong><strong>—</strong> <em>The changes in the surface layer of aluminum particles treated with V2O5 • nH2O hydrogel were studied by ellipsometry and raster electron microscopy methods. It was shown that at 0.8 wt.% content of metallic vanadium in the modified powder, the particle surface layer has a well developed relief, and a high degree of impregnation is achieved. The values of the thickness of this layer measured by different methods were compared, and the obtained deviations were analyzed.</em>

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Durgun, Ismail, and Rukiye Ertan. "Experimental investigation of FDM process for improvement of mechanical properties and production cost." Rapid Prototyping Journal 20, no. 3 (2014): 228–35. http://dx.doi.org/10.1108/rpj-10-2012-0091.

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Purpose – The mechanical properties and surface finish of functional parts are important consideration in rapid prototyping, and the selection of proper parameters is essential to improve manufacturing solutions. The purpose of this paper is to describe how parts manufactured by fused deposition modelling (FDM), with different part orientations and raster angles, were examined experimentally and evaluated to achieve the desired properties of the parts while shortening the manufacturing times due to maintenance costs. Design/methodology/approach – For this purpose, five different raster angles

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Saladukha, V. A., V. A. Pilipenko, F. F. Komarov, and V. A. Gorushko. "INFLUENCE OF TIME MODES OF THERMAL TREATMENT ON Pt-Si SYSTEM MICROSTRUCTURE." Doklady BGUIR 18, no. 2 (2020): 105–11. http://dx.doi.org/10.35596/1729-7648-2020-18-2-105-111.

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The paper is purposed to establish the principles of the micro-structural changes of Pt-Si system during the rapid thermal treatment. The Pt films 43.7 nm thick were applied on the substrates of mono-crystal silicon KEF 0.5 with orientation (111) by means of the magnetron platinum target sputtering (purity of 99.95 %) on the unit MPC 603 with the cryogen pumping to the pressure of no less than 5∙10-5 Pa. Argon was used as a working medium, whose purity constituted 99.933 %. Rapid thermal treatment was performed in the mode of the thermal balance with irradiation of the reverse side of the wafe

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KLAUSER, RUTH, I. H. HONG, T. H. LEE, et al. "ZONE-PLATE-BASED SCANNING PHOTOELECTRON MICROSCOPY AT SRRC: PERFORMANCE AND APPLICATIONS." Surface Review and Letters 09, no. 01 (2002): 213–22. http://dx.doi.org/10.1142/s0218625x0200180x.

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Adapting classical spectroscopic methods to the new challenge of studying nanomaterials, imaging techniques are the trendsetter in recent years. Among them is scanning photoelectron microscopy (SPEM) with submicron spatial resolution, where the sample surface is raster-scanned by a focused soft X-ray beam, and the emitted photoelectrons are collected at each point by the input optics of an electron energy analyzer. We have constructed such a station at SRRC in Taiwan, which is now fully in operation. In this paper, we introduce the specific features of the instrument and discuss application ex

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Özen, Arda, Gregor Ganzosch, Christina Völlmecke, and Dietmar Auhl. "Characterization and Multiscale Modeling of the Mechanical Properties for FDM-Printed Copper-Reinforced PLA Composites." Polymers 14, no. 17 (2022): 3512. http://dx.doi.org/10.3390/polym14173512.

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Additive manufacturing is an emerging technology and provides high design flexibility to customers. Fused deposition modeling (FDM) is an economical and promising additive manufacturing method. Due to its many advantages, FDM received great attention in recent years, and comprehensive studies are being undertaken to investigate the properties of FDM-printed polymers and polymer composites. As a result of the manufacturing technology employed in FDM, inner structures are changed with different process parameters, and thus, anisotropic properties are observed. Moreover, composite filaments such

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Yilmaz, Musa, and Necip Fazil Yilmaz. "Effects of raster angle in single- and multi-oriented layers for the production of polyetherimide (PEI/ULTEM 1010) parts with fused deposition modelling." Materials Testing 64, no. 11 (2022): 1651–61. http://dx.doi.org/10.1515/mt-2022-0085.

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Abstract Material type and part deposition orientation are two important concerns in additive manufacturing. Additive manufacturing methods utilized by the industry are generally based on polylactic acid (PLA) or acrylonitrile butadiene styrene (ABS) materials using the fused deposition modelling (FDM) method. However, in present commercial applications, besides extensive use of PLA/ABS, their low strength has emerged as their biggest disadvantage. However, polyetherimide (PEI)/ULTEM 1010 parts represent high-performance engineering thermoplastics and offer superior mechanical properties with

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Gilev, Mikhail, Dmitry Zaitsev, Maria Izmodenova, Darya Kiseleva, and Valeriy Silaev. "Comparative characteristic of the methods of certification of deformed microstructure of trabecular bone tissue." Russian journal of biomechanics. 23, no. 2 (2019): 202–8. http://dx.doi.org/10.15593/rjbiomech/2019.2.06.

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The article analyzes the data of microscopic studies of human trabecular bone tissue. Differences in the deformation behavior are due to the morphology of the organic and mineral components of the extracellular matrix at all structural levels of the hierarchical organization of bone tissue. The purpose of the work was to determine the most informative microscopic method for certifying the deformed microstructure of trabecular bone tissue in terms of the mechanism of its formation at the microlevel. Proceeding from the localization of the appearance of impression fractures, the bone tissue of t

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Vladyslav, Matviichuk, Nesterenkov Vladimir, and Berdnikova Olena. "Determining the influence of technological parameters of the electron-beam surfacing process on quality indicators." Eastern-European Journal of Enterprise Technologies 1, no. 12(115) (2022): 21–30. https://doi.org/10.15587/1729-4061.2022.253473.

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This paper reports the technology and equipment designed for manufacturing parts and components with predefined properties by 3D printing methods. Underlying the technology is the use of a beam of high-power electrons to smelt metal powder in a vacuum chamber with the formation of successive layers that repeat the contours of the digital model of the article. The object of research is the process of surfacing articles from the Ti<sub>6</sub>Al<sub>4</sub>Vtitanium alloy powder. The purpose is to determine the optimal surfacing modes based on identifying the effect of process parameters on the

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17

Smirnov, Aleksey, Artem Petryshchev, Tamara Bilko, Andrey Andreev, Anastasiia Semenko, and Yuliia Skorobagatko. "Development of the Recycling of Alloyed Metallurgical Waste: Features of Phase and Structural Transformations." Minerals 13, no. 9 (2023): 1171. http://dx.doi.org/10.3390/min13091171.

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The features of structural and phase transformations during the processing of alloyed metallurgical wastes using reduction smelting are determined herein. This is necessary in order to determine the technological parameters of the melting process that ensure the reduction in the losses of alloying components. The use of X-ray phase analysis in combination with the methods of raster electron microscopy and X-ray microanalysis ensured the identification of the microstructure features and the chemical composition of individual phases and inclusions in the metal. Our study identified new technolog

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18

Obnosov, K., V. Greshta, O. Hlotka, V. Kononov та E. Fasol. "IMPROVEMENT OF THE ALLOY STRUCTURE OF THE Ni-Cr-Со-W-Mo-Al-Ti-C SYSTEM". New Materials and Technologies in Metallurgy and Mechanical Engineering, № 3 (30 жовтня 2024): 6–11. http://dx.doi.org/10.15588/1607-6885-2024-3-1.

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Purpose. Establishing the specifics of the influence of alloying elements on the formation of carbides in the structure, their shape and the possibility of separating TLC phases for the system of the Ni-Cr-Co-W-Mo-Al-Ti-C type using the CALPHAD calculation method of prediction in comparison with data obtained by the method of raster electron microscopy. Research methods. The results of experimental and calculated data, formed on the basis of experimental and results taken from open sources, are presented. The chemical composition was determined on a REM-106I scanning electron microscope equipp

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19

Bernstein, Anke, Norbert Suedkamp, Hermann Otto Mayr, et al. "Thin Degradable Coatings for Optimization of Osteointegration Associated with Simultaneous Infection Prophylaxis." Key Engineering Materials 696 (May 2016): 171–76. http://dx.doi.org/10.4028/www.scientific.net/kem.696.171.

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The colonization of biomaterials with bacteria represents the main cause of implant-associated infections. Both an antibiotic prophylaxis and a faster osteointegration can be obtained by incorporation of bactericidal active metals in degradable CaP coatings. At present there is no reliable method on the basis of thermal spraying to get thin homogeneous layers containing silver, copper and bismuth in bacteriostatic / bactericidal concentrations. The aim of the study was the development and optimization of high-velocity suspension flame spraying (HVSFS) process for producing thin resorbable bioa

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20

Raevskikh, A. N., E. B. Chabina, and E. V. Filonova. "The influence of the ZhS6K powder Initial characteristics on the alloy microrelief features after selective laser melting." Voprosy Materialovedeniya, no. 1(109) (April 20, 2022): 101–19. http://dx.doi.org/10.22349/1994-6716-2022-109-1-101-119.

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The analysis of the ZhS6K alloy granules appearance, their surface and internal structure, as well as the chemical composition by volume and structural elements is carried out. The formation control possibility is shown for desired state of interfaces (tracks, crystallization cells, hatch block boundaries, grains, phases, discontinuities - pores and cracks) through the fractional composition, packing density during filling, scanning speed that provide a more solid and qualitative material state of the sample. The initial state of the samples structure was studied. A connection between the stru

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Skibitskaya, N. A., V. A. Kuzmin, M. N. Bolshakov, et al. "Methodology for determining the average diameter of rock pores and channels by well-log data based on lithological and petrophysical studies." Actual Problems of Oil and Gas, no. 32 (April 21, 2021): 47–57. http://dx.doi.org/10.29222/ipng.2078-5712.2021-32.art4.

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The paper presents a method for determining the parameters characterizing the features of the pore space structure of rocks continuously along the section, based on the results of well-log data interpretation. The results of the well-log data interpretation are presented with diagrams of average values of pore and channel diameters calculated continuously along the section, which are consistent with the results of laboratory measurements on rock samples. The proposed method is based on the use of the established correlation relationships between the slope tangent of the graph of dependence of

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Dvoryantsev, D. D., A. S. Sargsyan, A. V. Anisimov, and I. V. Lishevich. "Obtaining high-strength carbon fiber based on polyphenylene sulfide by ATL method with laser heating." Voprosy Materialovedeniya, no. 2(114) (July 26, 2023): 125–35. http://dx.doi.org/10.22349/1994-6716-2023-114-2-125-135.

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The method of manufacturing high-strength structural carbon fiber from toupreg based on PPS-214 grade polyphenylene sulfide (Fortron, Germany) and AS4 high-strength carbon fiber (Hexcel, USA) using a promising ATL-technology (Automated Tape Laying) with laser heating is considered. The technology was adapted for the material under study, laboratory models in the form of plates were made, physical and mechanical tests of laboratory samples were carried out. The quality of the binder distribution and the presence of defects were assessed by raster electron microscopy. The influence of the reinfo

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Cicero, Sergio, Victor Martínez-Mata, Alejandro Alonso-Estebanez, Laura Castanon-Jano, and Borja Arroyo. "Analysis of Notch Effect in 3D-Printed ABS Fracture Specimens Containing U-Notches." Materials 13, no. 21 (2020): 4716. http://dx.doi.org/10.3390/ma13214716.

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In this paper a fracture assessment in additive manufactured acrylonitrile butadiene styrene (ABS) fracture specimens containing U-notches is performed. We performed 33 fracture tests and 9 tensile tests, combining five different notch radii (0 mm, 0.25 mm, 0.50 mm, 1 mm and 2 mm) and three different raster orientations: 0/90, 30/−60 and 45/−45. The theory of critical distances (TCD) was then used in the analysis of fracture test results, obtaining additional validation of this theoretical framework. Different versions of TCD provided suitable results contrasting with the experimental tests pe

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Salman, Marwan A., Sadoon R. Daham, Wael H. A. Shaheen, et al. "Effect of Nozzle Diameter and Raster Angle on the Mechanical Properties of 3D Printed Nylon/ Carbon Fibers." Engineering, Technology & Applied Science Research 15, no. 2 (2025): 21410–17. https://doi.org/10.48084/etasr.9979.

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Fused Deposition Modeling (FDM) is classified as the most commonly used 3D printing process due to its low cost, wide range of material selection, and high accuracy. As an additive manufacturing method, FDM selectively deposits a melted plastic material layer by layer to produce a 3D object according to a geometry defined by a CAD model. The 3D printing process parameters, including infill density, printing speed, and printing orientation, have a huge effect on the mechanical properties of the 3D printed parts. Thus, finding the optimum 3D printing parameters is a very significant task that en

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Chen, Haoyang, Sumit Agrawal, Ajay Dangi, et al. "Optical-Resolution Photoacoustic Microscopy Using Transparent Ultrasound Transducer." Sensors 19, no. 24 (2019): 5470. http://dx.doi.org/10.3390/s19245470.

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The opacity of conventional ultrasound transducers can impede the miniaturization and workflow of current photoacoustic systems. In particular, optical-resolution photoacoustic microscopy (OR-PAM) requires the coaxial alignment of optical illumination and acoustic-detection paths through complex beam combiners and a thick coupling medium. To overcome these hurdles, we developed a novel OR-PAM method on the basis of our recently reported transparent lithium niobate (LiNbO3) ultrasound transducer (Dangi et al., Optics Letters, 2019), which was centered at 13 MHz ultrasound frequency with 60% pho

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Fröhlichová, M., R. Findorák, and J. Legemza. "Structural Analysis of Sinter with Titanium Addition / Analiza Strukturalna Spieku Z Dodatkiem Tytanu." Archives of Metallurgy and Materials 58, no. 1 (2013): 179–85. http://dx.doi.org/10.2478/v10172-012-0170-9.

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Paper presents the results from the study of the effect of materials with titanium addition on the strength properties of the iron ore sinter. The sinters with TiO2 addition or without TiO2 addition prepared in laboratory were applied in this research and were compared based on the structural and phase composition. Exploited was the method of the X-ray diffraction and method of elemental EDX analysis applying the electron raster microscope with the energo-dispersion analyser. Confirmed was the relationship between the sinter structure and its strength. Higher strength of the sinter without TiO

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Osman, Mohammed Ali, and Mostafa R. A. Atia. "Investigation of ABS-rice straw composite feedstock filament for FDM." Rapid Prototyping Journal 24, no. 6 (2018): 1067–75. http://dx.doi.org/10.1108/rpj-11-2017-0242.

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PurposeThe purpose of this paper is to present the development of a cost-effective acrylonitrile butadiene styrene (ABS)-rice straw (RS) composite filament for use in fused deposition modelling (FDM) and the effect of RS content on the mechanical properties of the developed filament.Design/methodology/approachRS and ABS were processed and mixed at varying fibre content (5-15 per cent). Filament using each mixture was produced using a single screw extruder. Tensile, flexural and water absorption specimens were prepared using a FDM machine. The mechanical properties were then tested following AS

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Evin, Emil, and Miroslav Tomáš. "Influence of Friction on the Formability of Fe–Zn-Coated IF Steels for Car Body Parts." Lubricants 10, no. 11 (2022): 297. http://dx.doi.org/10.3390/lubricants10110297.

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This paper presents the formability results of galvanized Zn–Fe-based interstitial-free (IF) “galvanneal” steel sheets with different degrees of alloying. The Fe content of the Zn–Fe coatings was determined by titration method and the phase composition of the coatings was determined by raster electron microscopy with EDX analyzer. A deterioration of the adhesion of the Fe–Zn coating to the substrate was observed in the pre-alloyed coating. The applied modes of annealing and smooth rolling after the surface galvanization resulted in a change in the surface microgeometry parameters Ra and Pc. Th

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Shkromada, Oksana, Viktoriia Ivchenko, Vadym Chivanov, et al. "Defining patterns in the influence exerted by the interelated biochemical corrosion on concrete building structures under the conditions of a chemical enterprise." Eastern-European Journal of Enterprise Technologies 2, no. 6 (110) (2021): 52–60. http://dx.doi.org/10.15587/1729-4061.2021.226587.

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The effect of microbial and chemical corrosion on concrete structures operated in the conditions of chemical enterprises has been established that makes it possible to reliably predict the timing of their decommissioning in order to prevent industrial disasters. Even though the construction complies with all building codes, concrete structures eventually undergo chemical and biological corrosion. The innovation proposed in this study implies investigating the depth and degree of damage to concrete at the microscopic level by the method of raster electron microscopy. In addition, the TPD-MS met

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Oksana, Shkromada, Ivchenko Viktoriia, Chivanov Vadym, et al. "Defining patterns in the influence exerted by the interelated biochemical corrosion on concrete building structures under the conditions of a chemical enterprise." Eastern-European Journal of Enterprise Technologies 2, no. 6 (110) (2021): 52–60. https://doi.org/10.15587/1729-4061.2021.226587.

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The effect of microbial and chemical corrosion on concrete structures operated in the conditions of chemical enterprises has been established that makes it possible to reliably predict the timing of their decommissioning in order to prevent industrial disasters. Even though the construction complies with all building codes, concrete structures eventually undergo chemical and biological corrosion. The innovation proposed in this study implies investigating the depth and degree of damage to concrete at the microscopic level by the method of raster electron microscopy. In addition, the TPD-MS met

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Uluutku, Berkin, and Santiago D. Solares. "Current measurements in the intermittent-contact mode of atomic force microscopy using the Fourier method: a feasibility analysis." Beilstein Journal of Nanotechnology 11 (March 13, 2020): 453–65. http://dx.doi.org/10.3762/bjnano.11.37.

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Atomic force microscopy (AFM) is an important tool for measuring a variety of nanoscale surface properties, such as topography, viscoelasticity, electrical potential and conductivity. Some of these properties are measured using contact methods (static contact or intermittent contact), while others are measured using noncontact methods. Some properties can be measured using different approaches. Conductivity, in particular, is mapped using the contact-mode method. However, this modality can be destructive to delicate samples, since it involves continuously dragging the cantilever tip on the sur

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Matviichuk, Vladyslav, Vladimir Nesterenkov, and Olena Berdnikova. "Determining the influence of technological parameters of the electron-beam surfacing process on quality indicators." Eastern-European Journal of Enterprise Technologies 1, no. 12(115) (2022): 21–30. http://dx.doi.org/10.15587/1729-4061.2022.253473.

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This paper reports the technology and equipment designed for manufacturing parts and components with predefined properties by 3D printing methods. Underlying the technology is the use of a beam of high-power electrons to smelt metal powder in a vacuum chamber with the formation of successive layers that repeat the contours of the digital model of the article. The object of research is the process of surfacing articles from the Ti6Al4Vtitanium alloy powder. The purpose is to determine the optimal surfacing modes based on identifying the effect of process parameters on the quality indicators of

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33

Nemtinov, Victor, Yulia Kostanchuk, Svetlana Motyleva, et al. "The field and laboratory study of the collection samples of onion breed Allium cepa L." Potravinarstvo Slovak Journal of Food Sciences 13, no. 1 (2019): 58–64. http://dx.doi.org/10.5219/1012.

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Thirteen collection samples of Allium cepa L. of different ecology-geographical origin grown in the Crimea conditions are given. Morphometric characteristics of the bulbs - the form index, the diameter, the height, the weight, the thickness and the quantity of rich skins are analyzed. The greatest output of standart production (90 - 95.6%) was observed for all breeds. The biochemical values of the Allium cepa L. samples under study were examined by the traditional methods. It is marked that the dry substances, the sugars sum, the mono- and disaccharides in the majority of the samples exceed th

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Loboda, Petro, Anastasiia Zvorykina, Eduard Vrzhyzhevskyi, et al. "Determining the pattern of direction and distribution of intermetallic phase in the eutectic of the weld material after electron-beam welding of titanium and niobium alloys." Eastern-European Journal of Enterprise Technologies 5, no. 12 (125) (2023): 54–62. http://dx.doi.org/10.15587/1729-4061.2023.288450.

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This paper reports a study whose object was material of the weld. The nature of changes in the microstructure of the weld material, which are caused by changes in the supplied energy, alloying elements and heat removal from the melt area, was investigated. Welding was performed with an electron beam at Uacc=60 kV, Ieb=90 mA, with an elliptical sweep of 3×4 mm. The speed of electron beam movement veb was varied from 7 to 15 mm·s-1. The temperature of the experimental welded samples T0 was varied from 300 K to 673 K. Ti-TiB alloy (a microcomposite alloy with reinforcing TiB fibers) was welded wi

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Maksimova, Elizaveta A., Roman A. Barmin, Polina G. Rudakovskaya, et al. "Air-Filled Microbubbles Based on Albumin Functionalized with Gold Nanocages and Zinc Phthalocyanine for Multimodal Imaging." Micromachines 12, no. 10 (2021): 1161. http://dx.doi.org/10.3390/mi12101161.

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Microbubbles are intravascular contrast agents clinically used in diagnostic sonography, echocardiography, and radiology imaging applications. However, up to date, the idea of creating microbubbles with multiple functionalities (e.g., multimodal imaging, photodynamic therapy) remained a challenge. One possible solution is the modification of bubble shells by introducing specific compounds responsible for such functions. In the present work, air-core microbubbles with the shell consisting of bovine serum albumin, albumin-coated gold nanocages, and zinc phthalocyanine were prepared using the son

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Nargis, Rifat Ara, and David Abram Jack. "Fiber Orientation Quantification for Large Area Additively Manufactured Parts Using SEM Imaging." Polymers 15, no. 13 (2023): 2871. http://dx.doi.org/10.3390/polym15132871.

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Polymer-based additively manufactured parts are increasing in popularity for industrial applications due to their ease of manufacturing and design form freedom, but their structural and thermal performances are often limited to those of the base polymer system. These limitations can be mitigated by the addition of carbon fiber reinforcements to the polymer matrix, which enhances both the structural performance and the dimensional stability during cooling. The local fiber orientation within the processed beads directly impacts the mechanical and thermal performances, and correlating the orienta

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Yushchenko, К. А., O. V. Yarovytsyn, T. M. Kushnaryova, V. E. Mazurak, S. S. Kovalchuk, and V. V. Kurenkova. "The formation of structure regularities in the recrystallized near-surface layer after restoration by heat treatment process of nickel-based high-temperature strength alloys." Metaloznavstvo ta obrobka metalìv 97, no. 1 (2021): 53–65. http://dx.doi.org/10.15407/mom2021.01.053.

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In modern nickel nickel-based high-temperature strength alloys of the ZhS32 type with a directional and single-crystal structure on surfaces that were previously subjected to mechanical treatment, with the subsequent isothermal exposure in the vicinity of the homogenization temperature lasting more than 15 minutes a subsurface recrystallized layer up to 40-65 μm deep is formed such us a chain of grains. The formation of this layer is a side effect that restrained the industrial application of vacuum heat treatment to restore local operational degradation ("raft"-structure) on the overheated in

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Sayanjali, Mozhgan, Amir Masood Rezadoust, and Foroud Abbassi Sourki. "Tailoring physico-mechanical properties and rheological behavior of ABS filaments for FDM via blending with SEBS TPE." Rapid Prototyping Journal 26, no. 10 (2020): 1687–700. http://dx.doi.org/10.1108/rpj-06-2019-0173.

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Purpose This paper aims to focus on the development of the three-dimensional (3D) printing filaments based on acrylonitrile butadiene styrene (ABS) copolymer and styrene-ethylene/butylene-styrene (SEBS) block copolymer, with tailored viscoelastic properties and controlled flow during the 3D printing process. Design/methodology/approach In this investigation, ABS was blended with various amounts of SEBS via a melt mixing process. Then the ABS/SEBS filaments were prepared by a single-screw extruder and printed by the FDM method. The rheological properties were determined using an MCR 501 from An

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Mangababu, A., Dipanjan Banerjee, Kanaka Ravi Kumar, R. Sai Prasad Goud, Venugopal Rao Soma, and S. V. S. Nageswara Rao. "Comparative study of GaAs nanostructures synthesized in air and distilled water by picosecond pulsed laser ablation and application in hazardous molecules detection." Journal of Laser Applications 34, no. 3 (2022): 032014. http://dx.doi.org/10.2351/7.0000750.

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This work explored the fundamental differences/mechanisms between the GaAs substrates ablated in two different media of air and distilled water (DW). A scan area of 5 × 5 mm2 was ablated by a picosecond laser with a pulse duration of 30 ps, a repetition rate of 10 Hz, a wavelength of 1064 nm, and a pulse energy of 2 mJ. The spacing between raster scan lines was varied (0.05–0.35 mm), keeping the scan speed (0.15 mm/s) constant. The obtained GaAs nanostructures (NSs) were thoroughly analyzed using microscopy techniques. A clear increase in separation between the raster scan lines was observed w

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Ageeva, E. V., R. A. Latypov, E. P. Novikov, and B. N. Sabel’nikov. "Study of Electric Spark Coatings Properties Obtained by Electrodes from Titanium Electroerosive Particles." Proceedings of the Southwest State University 23, no. 6 (2020): 21–33. http://dx.doi.org/10.21869/2223-1560-2019-23-6-21-33.

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Purpose of reseach. Modern car is a very complex system which has about 15... 20 thousand parts. More than 7 thousand lose their initial characteristics during operational process. As practice shows, more than 4000 car parts lose their operability much earlier than the expiration of vehicle life as a whole. These factors lead to significant repair costs, as well as profit losses caused by long delays in part of the rolling stock. Efficiency and qualitative improvement growth of various areas of public production pose new and more complex tasks to increase the efficiency and reliability of part

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Kuznetsova, I. V., and P. P. Safronov. "Native gold in the weathering crust of the Nizhneselemdzhinsky gold-bearing node (Amur region)." LITHOSPHERE (Russia) 21, no. 2 (2021): 239–55. http://dx.doi.org/10.24930/1681-9004-2021-21-2-239-255.

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Research subject. The weathering crust of Proterozoic slates in the Neklya River basin and Paleozoic granites in the Nizh- neselemdzhinsky gold-bearing node (NGBN) in the Tatarka River basin.Methods. The research was carried out using the methods of atomic absorption, X-ray fluorescent and mineralogical analysis of rocks and minerals. The method of raster electron microscopy was used to study the element structure, morphological and microstructural features of minerals.Results. Specific features of native gold from the weathering crust of NGBK were defined. It was established that the NGBN wea

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Shtin, S. V., та A. A. Lykasov. "Investigation of the Equilibrium Germanium-Substituted Wustite with Metal and Spinel Solutions in the Fе-Gе-O System". Solid State Phenomena 265 (вересень 2017): 827–33. http://dx.doi.org/10.4028/www.scientific.net/ssp.265.827.

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The phase equilibrium in the Fe-Ge-O system is investigated by measuring EMF of galvanic elements with solid oxygen-conductive electrolytes. The samples for investigation were prepared by the solid phase reaction at 900 °C. The samples were analyzed to determine the total and phase composition. The gross composition of the samples was refined by chemical analysis. The iron content was determined by the standard method of bichromatometric titration, while that of germanium was determined by the photometric method, which is based on measuring the optical density of the colored colloid solution o

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Singh, Sunpreet, Narinder Singh, Munish Gupta, Chander Prakash, and Rupinder Singh. "Mechanical feasibility of ABS/HIPS-based multi-material structures primed by low-cost polymer printer." Rapid Prototyping Journal 25, no. 1 (2019): 152–61. http://dx.doi.org/10.1108/rpj-01-2018-0028.

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Purpose The purpose of this paper is to fabricate acrylonitrile-butadiene-styrene (ABS)/high impact polystyrene (HIPS) based multi-material geometries using a low cost polymer printer. At the same time, efforts have been made to investigate the mechanical characteristics of the obtained prints and to perform the optimization using the Taguchi-Grey (TGRA) method. Design/methodology/approach Initially, the feedstock materials were in-house fabricated in the form of filament wires, workable with fused filament fabrication (FFF) technique, of 1.75 ± 0.1 mm diameter by using a single screw extruder

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Sultanov, M. M., P. V. Shamigulov, S. M. Militonyan, et al. "Development of new methods for assessing the technical condition of power lines using digital image processing." Safety and Reliability of Power Industry 15, no. 4 (2023): 284–92. http://dx.doi.org/10.24223/1999-5555-2022-15-4-284-292.

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An important role in satisfying the high quality of life of the population and modern industry is played by the reliability of power supply and ensuring uninterrupted delivery of electricity. As a result of a large number of emergency failures of elements caused by external factors, information about the technical state of elements in real time is not used by dispatching centers. These conditions cause difficulties in assessing the reliability of power lines and timely elimination of developing defects, which cause high transmission losses and lead to wire breaks and failures.Considering a dig

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Solovjov, J. A., and V. A. Pilipenko. "EFFECT OF RAPID THERMAL TREATMENT CONDITIONS ON ELECTROPHYSICAL PROPERTIES OF CROMIUM THIN FILMS ON SILICON." Doklady BGUIR, no. 7-8 (December 29, 2019): 157–64. http://dx.doi.org/10.35596/1729-7648-2019-126-8-157-164.

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Present paper is devoted the determination of the effect of the temperature of the process of rapid thermal treatment of chromium films on n-type conductivity silicon on their resistivity and contact properties of the interface. Chromium films of about 30 nm thickness were deposited by magnetron sputtering onto the surface of silicon substrates having a resistivity of 0.58 to 0.53 ohms×cm. The rapid thermal treatment was carried out in a heat balance mode by irradiating the back side of the substrates with non-coherent light flux in nitrogen ambient for 7 seconds. Quartz halogen incandescent l

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Rutkovskіy, Anatoly, Sergiy Markovych, and Sergiy Myhajlyta. "Fraktografichniy Analysis of the Ion Nitrided Standards From the Aluminium Pistons of Engines of Agroindustrial Technique." National Interagency Scientific and Technical Collection of Works. Design, Production and Exploitation of Agricultural Machines, no. 51 (2021): 126–32. http://dx.doi.org/10.32515/2414-3820.2021.51.126-132.

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For a more detailed study of kinetics and the mechanism of destruction, the influence of the environment and the load on the resistance of the samples with heat-protecting diffusion ion-accounted layers, a number of additional fractographic studies should be carried out. The presence of this information will increase the strength and reliability of both coatings and coatings in the stage of their design. In the work, a fractographic analysis of ionic nitrogen samples from aluminum pistons of agro-industrial machinery engines using a method of raster electron microscopy on a microscope Micro an

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Z., Kovziridze, N.Nijaradze, Tabatadze G., Cheishvili T., and Darakhvelidze N. "Multifunctional Nanocomposites in B4C-Tic-Tib2-Sic-BN-Al2O3-Sialon-C Carbon Fiber System for Armor Fillets, Turbine Discs and Wings, High-Temperature Wear Resistant Nodes." INTERNATIONAL JOURNAL OF MULTIDISCIPLINARY RESEARCH AND ANALYSIS 07, no. 05 (2024): 2202–15. https://doi.org/10.5281/zenodo.11296802.

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Goal - to receive on first stage β - SIALON containing nanocomposites by reactive sintering method at 14000C, with nitrogen pro-cess from origin composition in TiC-BN-SiC-B4C-Si-Al-Al2O3 (nanopowder) system. By using this method of synthesis, it became possible to receive nanocomposites with different percentages of β - SIALON. Our task was to study the phase composition of re-ceived consolidated materials in the TiC-TiB2-BN-SiC-B4C-β-SiAlON-Al2O3 (nanopowder-400nm.) system.Method. The obtained mass was grounded in an attritor and the consolidated composite was obtained by hot p

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Altukhov, A. Yu, E. V. Ageeva, A. A. Gorokhov, and A. S. Osminina. "X-RAY MICROANALYSIS OF ELECTRIC-SPARK COATINGS BASED ON TUNGSTEN-CONTAINING ELECTROEROSION POWDERS." Proceedings of the Southwest State University 22, no. 3 (2018): 29–39. http://dx.doi.org/10.21869/2223-1560-2018-22-3-29-39.

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The development of modern engineering requires improving the quality, reliability and durability of parts, components and mechanisms. One of the effective ways to solve these problems is the use of various functional coatings, including the method of electrospark alloying (EIL). The main electrode materials are mainly sintered hard alloys, the cost of which, due to the presence of expensive tungsten, is relatively high. One of the promising methods for producing powder from almost any conductive material, including solid alloy and high-speed steel waste, is the method of electroerosion dispers

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POTAPOVA, M. V., M. YU MAKHMUD-AKHUNOV, V. N. GOLOVANOV, K. E. IMESHEV, and A. A. ADAMOVICH. "EFFECT OF PASSIVATING COATINGS ON METALLIZATION TOPOLOGY IN PRODUCTION OF SEMICONDUCTOR DEVICES." Izvestia Ufimskogo Nauchnogo Tsentra RAN, no. 4 (December 13, 2021): 30–34. http://dx.doi.org/10.31040/2222-8349-2021-0-4-30-34.

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The surface quality of the metallized contact pads on the crystal plays an important role in the production of semiconductor devices. This paper presents experimental studies of the effect of a protective passivation film of silicon oxide on the surface structure of aluminum metallization in the field of forming contact pads. Plasma chemical deposition of passivation layer SiO2 from gas phase (PECVD method) was carried out on prepared samples of silicon with aluminum metallization using a high-frequency power source with a frequency of 13.56 MHz. After that, chemical etching of precipitated si

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Anisovich, A. G., M. I. Markevich, and A. N. Malyshko. "Some particularities of microscopic investigation of non-metallic objects." Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY), no. 2 (June 9, 2020): 75–80. http://dx.doi.org/10.21122/1683-6065-2020-2-75-80.

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The article deals with the comparative application of optical and raster microscopy for non-metallic objects and non-conducting surfaces. It is noted that this issue is not covered much in the special literature. There are practically no publications that compare and describe photos of the structure of materials obtained using fundamentally different microscopes, in particular, metallographic and raster. The causes of image distortion in a raster electron microscope in the study of dielectrics are considered. Comparative images of the oxidized surface, fabrics and natural leather obtained usin

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