Pub Date : 2021-09-05DOI: 10.1109/NAP51885.2021.9568519
O. Bauzha, S. Zagorodnyuk, B. Sus', Yuri Len
Quantitative numerical calculations of the effect of spin-orbit interaction on the magnetization and magnetic susceptibility of electrons to low-dimensional quantum dots were presented. The obtained characteristics demonstrate the irregular behavior in the region of ultralow temperatures. It is shown that the magnetization restraints at small magnetic fields are associated with the intersection of the energy levels of electrons, as a result of spin-orbit interaction. The calculations performed for GaSb quantum dots demonstrate the transformation of diamagnetic properties into paramagnetic ones, as well as the smoothing of the characteristics of magnetization and magnetic susceptibility with increasing temperature.
{"title":"Magnetic Properties of GaSb Quantum Dots Include Spin-Orbit Interaction","authors":"O. Bauzha, S. Zagorodnyuk, B. Sus', Yuri Len","doi":"10.1109/NAP51885.2021.9568519","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568519","url":null,"abstract":"Quantitative numerical calculations of the effect of spin-orbit interaction on the magnetization and magnetic susceptibility of electrons to low-dimensional quantum dots were presented. The obtained characteristics demonstrate the irregular behavior in the region of ultralow temperatures. It is shown that the magnetization restraints at small magnetic fields are associated with the intersection of the energy levels of electrons, as a result of spin-orbit interaction. The calculations performed for GaSb quantum dots demonstrate the transformation of diamagnetic properties into paramagnetic ones, as well as the smoothing of the characteristics of magnetization and magnetic susceptibility with increasing temperature.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"6 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87139351","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}
Pub Date : 2021-09-05DOI: 10.1109/NAP51885.2021.9568536
V. Holovatsky, M. Chubrei, V. Ivanko
The influence of the magnetic field and off-central donor impurity on the energy spectrum and wave functions of an electron in the inverted core-shell QD are calculated. On this basis, the dependence of the binding energy and the absorption coefficient of electromagnetic waves by multilayer QD with an impurity on the magnetic field induction are investigated within the approximation of the effective mass and the rectangular potential profile of the nanosystem by the matrix method using the exact electron wave functions in nanosystem without perturbations.The linear, third-order nonlinear and total optical absorption coefficients (OACs) are calculated taking into account all possible intraband quantum transitions. The combined effect of donor position, magnetic field and core size on binding energies and optical absorption coefficients is observed. The results show that these effects cause significant changes on donor binding energy and optical absorption coefficient
{"title":"Optical Absorption in Core-Shell Quantum Antidot with Donor Impurity under Applied Magnetic Field","authors":"V. Holovatsky, M. Chubrei, V. Ivanko","doi":"10.1109/NAP51885.2021.9568536","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568536","url":null,"abstract":"The influence of the magnetic field and off-central donor impurity on the energy spectrum and wave functions of an electron in the inverted core-shell QD are calculated. On this basis, the dependence of the binding energy and the absorption coefficient of electromagnetic waves by multilayer QD with an impurity on the magnetic field induction are investigated within the approximation of the effective mass and the rectangular potential profile of the nanosystem by the matrix method using the exact electron wave functions in nanosystem without perturbations.The linear, third-order nonlinear and total optical absorption coefficients (OACs) are calculated taking into account all possible intraband quantum transitions. The combined effect of donor position, magnetic field and core size on binding energies and optical absorption coefficients is observed. The results show that these effects cause significant changes on donor binding energy and optical absorption coefficient","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"10 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86611493","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}
Pub Date : 2021-09-05DOI: 10.1109/NAP51885.2021.9568553
A. Yanovska, S. Vakal, V. Vakal, V. Shkola, Tatiana Dychenko, A. Artyukhov
At this work the influence of biochar component addition to the shell surface on the characteristics of nanopores in the organic-mineral fertilizers. The nanoporous organic shell has good strength properties and is reliable attached to the core of the granule. The presence of biochar in the organic shell makes it possible to create a developed nanoporous structure due to a high specific surface area. The size and shape of nanopores allows for uniform penetration of moisture into the shell for its dissolution with subsequent introduction into the soil.
{"title":"Influence of Shell’s Organic Components on the Structure and Characteristics of Nanopores in Organic-Mineral Fertilizers","authors":"A. Yanovska, S. Vakal, V. Vakal, V. Shkola, Tatiana Dychenko, A. Artyukhov","doi":"10.1109/NAP51885.2021.9568553","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568553","url":null,"abstract":"At this work the influence of biochar component addition to the shell surface on the characteristics of nanopores in the organic-mineral fertilizers. The nanoporous organic shell has good strength properties and is reliable attached to the core of the granule. The presence of biochar in the organic shell makes it possible to create a developed nanoporous structure due to a high specific surface area. The size and shape of nanopores allows for uniform penetration of moisture into the shell for its dissolution with subsequent introduction into the soil.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"1 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89288877","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}
Pub Date : 2021-09-05DOI: 10.1109/NAP51885.2021.9568591
Aleksander Larsen, A. Poulia, A. Azar, C. Bazioti, P. Carvalho, A. Gunnæs, B. Belle, S. Diplas, P. Mikheenko
High-Entropy Alloys are advanced technological materials composed of several (typically five) elements in nearly equal atomic concentration. By forming these alloys, previously unknown phase fields of multidimensional phase diagrams are explored. The large number of possible substitutions of constituent elements on crystal lattice sites justifies the dominant contribution of mixing entropy over enthalpy to the free energy reduction. This leads to the formation of phases, which otherwise could not be formed in alloys with fewer main alloying elements. Here we explore magnetic and compositional properties of a High-Entropy Alloy, namely FeCoNiAlx Mnx (0.05 ≤ x ≤ 3.08), composed of magnetic (Fe, Co, Ni) and non-magnetic elements (Al, Mn). By magnetic force microscopy of a selected area, it is observed that for intermediate to low Al and Mn contents, the alloy splits in two major crystallographic phases with different magnetic properties. Elemental maps of the same area were recorded with energy dispersive spectroscopy and scanning electron microscopy. Counterintuitively, it was found that the phase rich in non-magnetic Al has stronger magnetism than the phase rich in Fe. This work showcases possible applications of the here presented HEAs as soft magnetic materials in functional magnetic elements.
{"title":"Identifying Magnetic Phases in Additively Manufactured High-Entropy Alloy FeCoNiAlxMnx","authors":"Aleksander Larsen, A. Poulia, A. Azar, C. Bazioti, P. Carvalho, A. Gunnæs, B. Belle, S. Diplas, P. Mikheenko","doi":"10.1109/NAP51885.2021.9568591","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568591","url":null,"abstract":"High-Entropy Alloys are advanced technological materials composed of several (typically five) elements in nearly equal atomic concentration. By forming these alloys, previously unknown phase fields of multidimensional phase diagrams are explored. The large number of possible substitutions of constituent elements on crystal lattice sites justifies the dominant contribution of mixing entropy over enthalpy to the free energy reduction. This leads to the formation of phases, which otherwise could not be formed in alloys with fewer main alloying elements. Here we explore magnetic and compositional properties of a High-Entropy Alloy, namely FeCoNiAlx Mnx (0.05 ≤ x ≤ 3.08), composed of magnetic (Fe, Co, Ni) and non-magnetic elements (Al, Mn). By magnetic force microscopy of a selected area, it is observed that for intermediate to low Al and Mn contents, the alloy splits in two major crystallographic phases with different magnetic properties. Elemental maps of the same area were recorded with energy dispersive spectroscopy and scanning electron microscopy. Counterintuitively, it was found that the phase rich in non-magnetic Al has stronger magnetism than the phase rich in Fe. This work showcases possible applications of the here presented HEAs as soft magnetic materials in functional magnetic elements.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"17 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90217781","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}
Pub Date : 2021-09-05DOI: 10.1109/NAP51885.2021.9568598
M. Samsonenko, S. Khalameida, V. Sydorchuk, O. Khyzhun, V. Starchevskyy, B. Charmas
Mechano- and sonochemical doping of precipitated SnO2 with silver have been studied. All obtained samples have been investigated using XRD, SEM and EDS, XPS, adsorption of nitrogen, TEM, UV-Vis spectroscopy. The doped samples have a developed porous structure, narrower band gap and stronger absorption of visible light and, as a consequence, high photocatalytic activity in the photodegradation of rhodamine B, safranin T and methyl orange under the action of visible light.
{"title":"Influence of Doping with Silver on Photocatalytic Properties of Tin Dioxide","authors":"M. Samsonenko, S. Khalameida, V. Sydorchuk, O. Khyzhun, V. Starchevskyy, B. Charmas","doi":"10.1109/NAP51885.2021.9568598","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568598","url":null,"abstract":"Mechano- and sonochemical doping of precipitated SnO2 with silver have been studied. All obtained samples have been investigated using XRD, SEM and EDS, XPS, adsorption of nitrogen, TEM, UV-Vis spectroscopy. The doped samples have a developed porous structure, narrower band gap and stronger absorption of visible light and, as a consequence, high photocatalytic activity in the photodegradation of rhodamine B, safranin T and methyl orange under the action of visible light.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"6 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90479192","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}
Pub Date : 2021-09-05DOI: 10.1109/NAP51885.2021.9568610
V. Koval, V. Barbash, M. Dusheyko, V. Lapshuda, O. Yashchenko, A. Naidonov
In the paper the biopolymer substrates were made from nanocellulose (NC), which is extracted from organosolvent reed cellulose using 2,2,6,6-tetramethylpiperidin-1-oxyl reagent (TEMPO). Nickel-based thin films were deposited on the surface of nanocellulose by RF magnetron sputtering. The peculiarities of surface morphology and chemical composition of inorganic material on the surface of biopolymer substrate were studied. Flexible strain sensors were obtained from nickel busbars on the surface of nanocellulose. The influence of overall sizes of nickel busbars on piezoresistive parameters of flexible sensors was established. It was determined that the maximum strain sensitivity is observed for a nickel busbar with a width of 1 mm, a thickness of 250 nm, a length of 15 mm and was 195,8⋆ 10-3 %. The magnitude of drift in time was 0,17 %/min. Obtained strain sensors were tested on mechanical strength depending on nickel busbar sizes. It was shown that the presence of nickel thin film increases the strength of strain sensors by 40%: from 13.8 MPa for pure nanocellulose to 19.5-19.6 MPa for nanocellulose with nickel thin films.
{"title":"Nickel-based Piezoresistive Sensors Obtained on Flexible Nanocellulose Substrate","authors":"V. Koval, V. Barbash, M. Dusheyko, V. Lapshuda, O. Yashchenko, A. Naidonov","doi":"10.1109/NAP51885.2021.9568610","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568610","url":null,"abstract":"In the paper the biopolymer substrates were made from nanocellulose (NC), which is extracted from organosolvent reed cellulose using 2,2,6,6-tetramethylpiperidin-1-oxyl reagent (TEMPO). Nickel-based thin films were deposited on the surface of nanocellulose by RF magnetron sputtering. The peculiarities of surface morphology and chemical composition of inorganic material on the surface of biopolymer substrate were studied. Flexible strain sensors were obtained from nickel busbars on the surface of nanocellulose. The influence of overall sizes of nickel busbars on piezoresistive parameters of flexible sensors was established. It was determined that the maximum strain sensitivity is observed for a nickel busbar with a width of 1 mm, a thickness of 250 nm, a length of 15 mm and was 195,8⋆ 10-3 %. The magnitude of drift in time was 0,17 %/min. Obtained strain sensors were tested on mechanical strength depending on nickel busbar sizes. It was shown that the presence of nickel thin film increases the strength of strain sensors by 40%: from 13.8 MPa for pure nanocellulose to 19.5-19.6 MPa for nanocellulose with nickel thin films.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"340 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75938349","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}
Pub Date : 2021-09-05DOI: 10.1109/NAP51885.2021.9568567
Ya. V. Karandas, A. Korotun, I. Titov
The frequency dependencies for the diagonal components of the polarizability tensor of the metallic nanotubes have been obtained. The different approaches to the considering of the surface scattering of electrons have been analyzed. The calculations have been performed for the nanotubes Au, Ag, Cu, Al. It has been established that the location of the maximums of the polarizability and the scattering cross-section depend on the radius of the dielectric core and on the thickness of the metallic nanotube.
{"title":"More on the Size Effects on the Optical Properties of the Metallic Nanotubes","authors":"Ya. V. Karandas, A. Korotun, I. Titov","doi":"10.1109/NAP51885.2021.9568567","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568567","url":null,"abstract":"The frequency dependencies for the diagonal components of the polarizability tensor of the metallic nanotubes have been obtained. The different approaches to the considering of the surface scattering of electrons have been analyzed. The calculations have been performed for the nanotubes Au, Ag, Cu, Al. It has been established that the location of the maximums of the polarizability and the scattering cross-section depend on the radius of the dielectric core and on the thickness of the metallic nanotube.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"46 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75809632","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}
Pub Date : 2021-09-05DOI: 10.1109/NAP51885.2021.9568607
S. Yakovin, S. Dudin, A. Zykova, V. Safonov, T. Kuznetsova, G. Melnikova, A. Petrovskaya, S. A. Chizhik G, N. Donkov
Antimicrobial properties and thrombotic resistance of modern biomaterials depend on the composition and surface properties, such as roughness, topography and wettability. Tantalum oxynitrides demonstrate a wide range of modifications in the structure and elemental composition. Results show the effect of deposition conditions on the structure and surface properties of tantalum oxynitrides and further correlation with the biological response of TaON films in vitro tests.
{"title":"Structure and Surface Properties of Magnetron Sputtered Tantalum Oxynitride Coatings for Biomedical Applications","authors":"S. Yakovin, S. Dudin, A. Zykova, V. Safonov, T. Kuznetsova, G. Melnikova, A. Petrovskaya, S. A. Chizhik G, N. Donkov","doi":"10.1109/NAP51885.2021.9568607","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568607","url":null,"abstract":"Antimicrobial properties and thrombotic resistance of modern biomaterials depend on the composition and surface properties, such as roughness, topography and wettability. Tantalum oxynitrides demonstrate a wide range of modifications in the structure and elemental composition. Results show the effect of deposition conditions on the structure and surface properties of tantalum oxynitrides and further correlation with the biological response of TaON films in vitro tests.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"46 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74674434","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}
Pub Date : 2021-09-05DOI: 10.1109/NAP51885.2021.9568600
V. Kotsyubynsky, B. Rachiy, I. Budzulyak, V. Boychuk, S. Budzulyak, M. Hodlevska
The aim of this paper is the systematic study of the structural properties evolution of porous carbons derived from hemp bast fiber at the different carbonization temperatures with the next chemical activation procedure under the conditions of additional nitrogen doping and thermal treatment. The comparative analysis of SAXS and Raman spectroscopy data was done. The obtained materials have a turbostratic structure and consist of the ultrasmall graphitic fragments separated by amorphous carbon. It was determined that the carbonization temperature in a range of 800-1000°C causes sharp increase in micropores relative content after carbon treatment with nitric acid. The minimal lateral size of graphitic crystallites (of about 5.5 nm along (002) basal plane) is observed for nitrogen-doped carbon obtained at carbonization temperature of 800°C that corresponds to average aggregates size. The control of activated carbons structural properties allows to increase energy and power densities of electrochemical capacitors as well as to create the preconditions for composite electrode materials obtaining with predictable properties.
{"title":"SAXS and Raman Study of the Structural Evolution in Hemp Bast Fiber Derived Porous Carbon","authors":"V. Kotsyubynsky, B. Rachiy, I. Budzulyak, V. Boychuk, S. Budzulyak, M. Hodlevska","doi":"10.1109/NAP51885.2021.9568600","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568600","url":null,"abstract":"The aim of this paper is the systematic study of the structural properties evolution of porous carbons derived from hemp bast fiber at the different carbonization temperatures with the next chemical activation procedure under the conditions of additional nitrogen doping and thermal treatment. The comparative analysis of SAXS and Raman spectroscopy data was done. The obtained materials have a turbostratic structure and consist of the ultrasmall graphitic fragments separated by amorphous carbon. It was determined that the carbonization temperature in a range of 800-1000°C causes sharp increase in micropores relative content after carbon treatment with nitric acid. The minimal lateral size of graphitic crystallites (of about 5.5 nm along (002) basal plane) is observed for nitrogen-doped carbon obtained at carbonization temperature of 800°C that corresponds to average aggregates size. The control of activated carbons structural properties allows to increase energy and power densities of electrochemical capacitors as well as to create the preconditions for composite electrode materials obtaining with predictable properties.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"26 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74725482","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}
Pub Date : 2021-09-05DOI: 10.1109/NAP51885.2021.9568542
A. Titenko, L. Demchenko, M. Babanli, Tymur Bykanov, Oleksii Titenko, S. Huseynov
The paper presents the functional properties of new Fe-Ni-Co-Ti shape memory nanocomposite, formed as a result of supersaturated solid solution aging. It was found that Fe-Ni-Co-Ti alloys in certain intervals exhibit unusual deformation and electrical effects when exposed to temperature and mechanical stresses. The reasons and factors that contribute to the achievement of large superelastic deformations and reactive stresses are analyzed. The appearance of differential thermo-emf (thermo-electromotive force) signals during the induction of martensitic transformation is studied experimentally. A correlation has been established between the temperature dependences of the differential thermo-emf and the electrical resistance of the studied alloy. Unique thermal power and the effect of deformation on electrical properties are able to compete with mechanical power drives, tools and signaling devices. Their uniqueness lies in the ability to reversibly restore the original shape and dimensions under thermal power loading conditions and, at the same time, perform useful work, signaling changes in external conditions. The formation of the required structure and functional properties is facilitated by the formation of a system of dispersed particles.
{"title":"Functional Properties of Fe-Ni-Co-Ti Nanocomposite under the Influence of Temperature and Mechanical Stress","authors":"A. Titenko, L. Demchenko, M. Babanli, Tymur Bykanov, Oleksii Titenko, S. Huseynov","doi":"10.1109/NAP51885.2021.9568542","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568542","url":null,"abstract":"The paper presents the functional properties of new Fe-Ni-Co-Ti shape memory nanocomposite, formed as a result of supersaturated solid solution aging. It was found that Fe-Ni-Co-Ti alloys in certain intervals exhibit unusual deformation and electrical effects when exposed to temperature and mechanical stresses. The reasons and factors that contribute to the achievement of large superelastic deformations and reactive stresses are analyzed. The appearance of differential thermo-emf (thermo-electromotive force) signals during the induction of martensitic transformation is studied experimentally. A correlation has been established between the temperature dependences of the differential thermo-emf and the electrical resistance of the studied alloy. Unique thermal power and the effect of deformation on electrical properties are able to compete with mechanical power drives, tools and signaling devices. Their uniqueness lies in the ability to reversibly restore the original shape and dimensions under thermal power loading conditions and, at the same time, perform useful work, signaling changes in external conditions. The formation of the required structure and functional properties is facilitated by the formation of a system of dispersed particles.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"49 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74247440","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}
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