2020 IEEE 10th International Conference Nanomaterials: Applications & Properties (NAP)最新文献

{"title":"Structure and Properties of Periodic Multilayer Metal/nitride Coatings Deposited from Filtered Vacuum-arc Plasma Using Ti-Al-Y Cathode","authors":"V. Vasyliev, A. Luchaninov, E. Reshetnyak, V. Strel’nitskij","doi":"10.1109/NAP51477.2020.9309561","DOIUrl":"https://doi.org/10.1109/NAP51477.2020.9309561","url":null,"abstract":"The composition, structure, hardness and wear resistance of periodic multilayer metal/nitride coatings deposited from a filtered vacuum-arc plasma using $mathrm{T}mathrm{i}_{0.47}mathrm{A}1_{0.51}mathrm{Y}_{0.02}$ cathode by the PIII& D method were investigated. The coating period was changed in the range of 35-300 nm by changing the duration of the periodic feeding (pumping) of nitrogen into the vacuum chamber. The mechanical characteristics of multilayer metal / nitride and single-layer nitride coatings are compared. Single-layer nitride coatings are characterized by a fairly high hardness of 34-36 GPa. The hardness of the multilayer coatings is lower and decreases from 24 to 19 GPa with decreasing period of the composition. The introduction into the composition of nitride coatings of more plastic metal layers does not increase the criterion H/E, which is in the range of 0.07 to 0.09. Due to the high hardness, single-layer coatings have high resistance to abrasive wear, but are destroyed by cavitation due to cracks and pitting peels. Multilayer coatings were slightly better in the cavitation test due to the less pronounced columnar structure, but do not withstand abrasive effects.","PeriodicalId":6770,"journal":{"name":"2020 IEEE 10th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"13 1","pages":"01TFC26-1-01TFC26-5"},"PeriodicalIF":0.0,"publicationDate":"2020-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86615046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Grain Boundary Types and Relative Grain-boundary Energy in Undoped Silicon Films with Equiaxed and Fibrous Structure","authors":"T. Rodionova","doi":"10.1109/NAP51477.2020.9309676","DOIUrl":"https://doi.org/10.1109/NAP51477.2020.9309676","url":null,"abstract":"The structure and relative grain-boundary energy of undoped silicon films prepared by low-pressure chemical vapor deposition, were investigation in a wide range of film thicknesses by the methods of transmission electron microscope and atomic force microscope, respectively. We used the method of grain-boundary grooves formed at the intersection of grain boundaries with the free surface. It was shown that > 85 nm films are characterized by equiaxial structure with an average grain size of 20 nm. There are no defects inside the grain. In these films, the grain boundaries are high-angle and the relative grain-boundary energy is the lowest. At film thicknesses $gt85$ nm, the equiaxed structure of the films is transformed into a fibrous structure. Grains in the fibrous structure are twin complexes, which were formed by multiple twinning. Their sizes vary from $sim100$ nm with a film thickness of 500 nm to 750 nm with a thickness of 2200 nm. Increase in relative grain-boundary energy with increasing film thickness is due to the presence of a large number of low-angle boundaries in the fibrous films and the dislocation structure of grain boundaries. Dislocations have a strong field of elastic stresses, which makes a significant contribution to the increase in relative grain-boundary energy. With an increase in the film thickness up to 2200 nm, a tendency toward a decrease in the relative grain-boundary energy is observed. This is due to relaxation processes in the structure of the films due to the replacement of high-energy low-angle grain boundaries by high-angle grain boundaries with lower energy. We can assume that the mechanism of relaxation processes in films, by analogy with metals, is the slip of dislocations. Sliding dislocations can interact with dual dislocations, and often seat dislocations are formed. The presence of a large number of moving dislocations in the fibrous structure leads to the formation of metatable configurations and an increase in the stability of the film structure.","PeriodicalId":6770,"journal":{"name":"2020 IEEE 10th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"17 1","pages":"01TFC05-1-01TFC05-3"},"PeriodicalIF":0.0,"publicationDate":"2020-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86623843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Radiomodifying Effect of X-Ray Radiation on Microflora of Yogurts with Ultradisperse Powders of Beta vulgaris","authors":"M. Samilyk, Anna O. Gelih, O. Kalinkevich, N. Bolgova, I. Shelest, Yana V. Trofimenko, Yevgen Zinchenko, V. Chivanov, A. Kalinkevich","doi":"10.1109/NAP51477.2020.9309550","DOIUrl":"https://doi.org/10.1109/NAP51477.2020.9309550","url":null,"abstract":"New functional dairy products containing ultrafine beetroot powders including nanosized fraction have been developed. The influence of X-ray irradiation on their acidity and pathogenic and normal microflora was determined. The potential possibility of using X-ray radiation for sterilizing products with the inclusion of plant nano- and microparticles has been revealed.","PeriodicalId":6770,"journal":{"name":"2020 IEEE 10th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"7 1","pages":"02IT05-1-02IT05-5"},"PeriodicalIF":0.0,"publicationDate":"2020-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81796090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural Features of Carbon Nitride Nanocolumnar Films after Nanosecond Pulsed Laser Annealing in a Supercritical Fluid","authors":"A. Prudnikov, Y. Pashkevich, V. Dmitrenko, M. Pas'ko, V. Chishko","doi":"10.1109/NAP51477.2020.9309577","DOIUrl":"https://doi.org/10.1109/NAP51477.2020.9309577","url":null,"abstract":"The effect of pulsed laser irradiation on the structural properties of nanocolumnar CNx:O films in dependence on the intensity of laser pulses and film density have been investigated. The laser annealing was carried out for carbon-nitride films placed in a liquid. The structural changes in nanocolumnar CNx:O films after the influence of pulsed laser irradiation have been determined by Raman spectroscopy. It was found that after annealing procedure the nitrogen/carbon ratio in the films increases under the laser irradiation intensity increase. It has been established by the methods of scanning electron microscopy and Raman spectroscopy that efficiency of the laser annealing for structural changes depends on the density of the nanocolumnar structures.","PeriodicalId":6770,"journal":{"name":"2020 IEEE 10th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"22 1","pages":"01TFC24-1-01TFC24-4"},"PeriodicalIF":0.0,"publicationDate":"2020-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76553161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Formation of Zn/ZnO and Zn/ZnO/NiO Multilayer Porous Nanosystems for Potential Application as Electrodes in Li-ion Batteries","authors":"A. Kornyushchenko, V. Natalich, S. Shevchenko, V. Perekrestov","doi":"10.1109/NAP51477.2020.9309614","DOIUrl":"https://doi.org/10.1109/NAP51477.2020.9309614","url":null,"abstract":"The present paper is devoted to the investigation of physical principle and methodological features of the formation technology of two-layer Zn/ZnO and three-layer Zn/ZnO/NiO porous systems. The possibility of reducing the total resistance of the multilayer system using the incomplete oxidation of Zn primary porous layers or by depositing ZnO and NiO films has been shown, which is important for the practical application of the obtained layers to create electrodes of lithium-ion batteries.","PeriodicalId":6770,"journal":{"name":"2020 IEEE 10th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"40 1","pages":"01NSSA06-1-01NSSA06-5"},"PeriodicalIF":0.0,"publicationDate":"2020-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88906113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Low-Temperature Dielectric Relaxation in the System Silica Gel – Undecylenic Acid","authors":"M. Lazarenko, K. I. Hnatiuk, S. Alekseev, K. S. Yablochkova, R. Dinzhos, F. Ublekov, M. V. Lazarenko, D. Andrusenko, A. Alekseev","doi":"10.1109/NAP51477.2020.9309579","DOIUrl":"https://doi.org/10.1109/NAP51477.2020.9309579","url":null,"abstract":"The paper discusses the influence of silica gel pores’ size on the structure and the dielectric properties of the nanocrystals of undecylenic acid with the view of determining molecular mechanisms of the possible pharmacological activity of similar substances. To achieve these goals, the powder XRD method was utilized. The nanocrystals formed in the silica gel pores show the absence of order along the long axes of molecules. The dielectric relaxation in the bulk undecylenic acid and its nanocrystals was studied using dielectric spectroscopy. The decrease in pores’ size led to a decrease in the temperatures of the relaxation process. We relate this shift to the formation of additional stresses in the nanocrystals caused by the interaction with the silica gel walls.","PeriodicalId":6770,"journal":{"name":"2020 IEEE 10th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"193 1","pages":"01NIC02-1-01NIC02-6"},"PeriodicalIF":0.0,"publicationDate":"2020-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73679587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Physical and Chemical Characterization of the Magnesium Surface Modified by Plasma Electrolytic Oxidation – Influence of Immersion in Simulated Body Fluid","authors":"O. Oleshko, V. Kornienko, S. Kyrylenko, W. Simka, Y. Husak, T. Oleshko, Bohdan Dryhval, J. Dudko, M. Pogorielov","doi":"10.1109/NAP51477.2020.9309586","DOIUrl":"https://doi.org/10.1109/NAP51477.2020.9309586","url":null,"abstract":"Pure magnesium (Mg) degrades very quickly and uncontrollably upon contact with water. It also oxidizes in the air. Plasma electrolytic oxidation (PEO) is a promising method for surface modification of metal alloys, which can contribute to controlling corrosion of Mg. Additionally, modifications with the PEO lead to the formation of mesoporous topography and changes in physical and chemical properties of Mg surfaces, e.g., their wettability, and to increase in their surface area. Our project aimed at modification of surfaces of Mg implant by the PEO method using silicate-based bath electrolyte in order to enhance resistance to corrosion, biocompatibility, and antibacterial properties of the implants. The use of silicate in the PEO bath electrolyte leads to changes in the surface morphology. The obtained surface layers acquire rich morphology with pores and craters of various sizes. This substantially increases the total surface area and change wettability. In addition, the formation of silicate oxide layers provides protection from corrosion and can lead to an improvement in the long-term stability of implants.","PeriodicalId":6770,"journal":{"name":"2020 IEEE 10th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"5 1","pages":"02BA11-1-02BA11-4"},"PeriodicalIF":0.0,"publicationDate":"2020-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79103037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Parts Diamond Burnishing Process Regimes optimization Made of INCONEL 718 Alloy via Selective Laser Sintering Method","authors":"Y. Vyshnepolskyi, D. Pavlenko, D. Tkach, Yaroslav Dvirnyk","doi":"10.1109/NAP51477.2020.9309661","DOIUrl":"https://doi.org/10.1109/NAP51477.2020.9309661","url":null,"abstract":"To expand the area of parts made of non-compact alloys application, it is proposed to use one of the local surfaceplastic deformation methods- diamond slide burnishing (DSB). The peculiarities of local surface plastic deformation by DSB of parts made of heat-resistant alloy INCONEL 71S based on nickel obtained by selective laser sintering (SLS) have been investigated. The optimal modes of DSB parts have been determined based on the degree of their influence on the parameters of quality and microhardness of the surface layer. The regularities of changes in the studied parameters of roughness and microhardness have been established depending on various parameters of DSB. It has been found that to obtain the minimum roughness and maximum microhardness of the surface layer, the cumulative effect of burnishing parameters should be considered. The influence of DSB modes on the structure of the parts surface layer which is obtained by SLS has been shown. Based on the analysis of Pareto diagrams, the significance of the DSB parameters with respect to their effect on the roughness and microhardness of the surface layer of the samples obtained by SLS has been established. Using the Box Wilson steep ascent method, the optimal modes of parts DSB have been established. It has been found that the optimal modes of DSB are the burnishing force of 0.25 kN, the feed rate is 0.1 mm/rev, and the radius of the DSB sphere is 2.5 mm.","PeriodicalId":6770,"journal":{"name":"2020 IEEE 10th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"238 1","pages":"02SAMA01-1-02SAMA01-5"},"PeriodicalIF":0.0,"publicationDate":"2020-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75858677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nonlinear Proximity Effect in a Hybrid Normal Metal-Superconductor Structure","authors":"E. Zubov","doi":"10.1109/NAP51477.2020.9309644","DOIUrl":"https://doi.org/10.1109/NAP51477.2020.9309644","url":null,"abstract":"Effective-field microscopic approach has been applied to a hybrid structure “normal metal-superconductor” in order to describe a nonlinear proximity effect. It is shown that at high barrier transparency, the phase transition to a superconducting state disappears abruptly. The existence of two gaps points out the intermediate state typical for a firstorder phase transition. The incoherent electron tunneling enlarges the temperature region of the nonequilibrium superconductivity.","PeriodicalId":6770,"journal":{"name":"2020 IEEE 10th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"12 1","pages":"02SNS01-1-02SNS01-5"},"PeriodicalIF":0.0,"publicationDate":"2020-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75400785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Negative and Positive Effect of Giant Magnetoresistance in The Magnetically Ordered Sandwich","authors":"L. Dekhtyaruk, A. P. Kharchenko, Yu. O. Klymenko, Y. Shkurdoda, Yu.M. Shabelnyk, O. Bezdidko, A. Chornous","doi":"10.1109/NAP51477.2020.9309694","DOIUrl":"https://doi.org/10.1109/NAP51477.2020.9309694","url":null,"abstract":"Using the modified Fuchs-Sondheimer model [1,2] in the framework of the two-current model [3–5], the analysis of the effect of giant magnetoresistance in the magnetically ordered sandwich was theoretically performed. The conditions under which either negative or positive giant magnetoresitive effect is observed and their amplitude reachs maximum were determined.","PeriodicalId":6770,"journal":{"name":"2020 IEEE 10th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"104 1","pages":"01NMM13-1-01NMM13-3"},"PeriodicalIF":0.0,"publicationDate":"2020-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77121510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}