2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)最新文献

Dimensional Effect in Magnetoresistance in the Three-Layer Magnetic Films 三层磁性薄膜中磁阻的尺寸效应

2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP) Pub Date : 2021-09-05 DOI: 10.1109/NAP51885.2021.9568401

Yu.M. Shabelnyk, L. Dekhtyaruk, D. Saltykov, I. Shpetnyi, A. Chornous, Y. Shkurdoda, A. P. Kharchenko, V. Virchenko

{"title":"Dimensional Effect in Magnetoresistance in the Three-Layer Magnetic Films","authors":"Yu.M. Shabelnyk, L. Dekhtyaruk, D. Saltykov, I. Shpetnyi, A. Chornous, Y. Shkurdoda, A. P. Kharchenko, V. Virchenko","doi":"10.1109/NAP51885.2021.9568401","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568401","url":null,"abstract":"Based on the generalized Dieny formula [1], [2], a theoretical analysis of the dependence of the magnetoresistance ratio $delta$, which quantities the effect of giant magnetoresistance (GMR) in a magnetically ordered three-layer film with a thickness $D=d_{m1}+d_{n}+d_{m2}, (d_{m1}$ and dm2 - thickness of the basic and covering magnetic layers of the metal, respectively, dn thickness of the non-magnetic layer), on the thickness of the covering magnetic layer dm2 was performed. It was shown that in the case of performing inequalities $d_{m2}lt lt (d_{n}+d_{m1}), (d_{m2}gt gt (d_{n}+d_{m1}))$ the value of $delta$ is negligible due to shunting the resistance of the covering layer with the resistances of the basic layer and the non-magnetic layer (shunting the resistance of the basic layer and the non-magnetic layer with the resistance of the covering magnetic layer). If the equality $d_{m2}=(d_{n}+d_{m1})$ is met, the value of $delta$ becomes the maximum (amplitude) value due to the absence of a shunting effect.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"170 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74325048","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}

引用次数: 0

Antimicrobial Electrospun Chitosan Nanofibrous Membranes Functionalized with Silver Nanoparticles 纳米银功能化抗菌静电纺壳聚糖纳米纤维膜

2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP) Pub Date : 2021-09-05 DOI: 10.1109/NAP51885.2021.9568584

Yuliia Varava, Y. Samokhin, Anton Savchenko, K. Diedkova, S. Kyrylenko, V. Korniienko

{"title":"Antimicrobial Electrospun Chitosan Nanofibrous Membranes Functionalized with Silver Nanoparticles","authors":"Yuliia Varava, Y. Samokhin, Anton Savchenko, K. Diedkova, S. Kyrylenko, V. Korniienko","doi":"10.1109/NAP51885.2021.9568584","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568584","url":null,"abstract":"The application of nanotechnologies in the development of biomaterials has at present of potential interest for medical application. Among the polymers for this aim, chitosan (Ch) is one of the most promising due to its biocompatibility, biodegradability, and antibacterial modes. Electrospinning is an economy and highly reproducible procedure for the fabrication of polymeric nanofibrous membranes. This study applied the appropriate electrospinning parameters to manufacture membranes made of Ch solution in a combination of trifluoroacetic acid (TFA) and dichloromethane (DMC) as solvent systems. The ability of Ch nanofibers to influence bacterial adhesion and proliferation was enforced by the loading of silver nanoparticles (AgNPs). We demonstrated that enhancing the antibacterial potential of silver-contained Ch membranes depends on the amount of AgNPs. Otherwise, the viability and bacterial growth of the E. coli strain were lower during co-cultivation with Ch-Ag samples than S. aureus. The biofilm formation capacity was better in silver nanoparticle-free membranes. We confirmed that an increase of AgNPs content noticeable decreases the biofilm formation ability. These results demonstrate that nanofibrous Ch materials contained AgNPs in concentrations not exceeded minimum inhibitory concentrations (MIC) might be promising antibacterial material due to extensive bacterial suppression and biofilm inhibition effect.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"61 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":"81263441","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}

引用次数: 0

An Implementation of Gold Nanoparticles with Functionalized Surface in Biosensorics 具有功能化表面的金纳米颗粒在生物传感器中的应用

2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP) Pub Date : 2021-09-05 DOI: 10.1109/NAP51885.2021.9568544

M. Razumova, Yuliia Lunha, V. Lozovski

引用次数: 1

Molecular Dynamics Simulation of the Uniaxial Tensile Test of Hollow-Core Silicon Nanowires 空心硅纳米线单轴拉伸试验的分子动力学模拟

2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP) Pub Date : 2021-09-05 DOI: 10.1109/NAP51885.2021.9568398

S. Semchuk, V. Kuryliuk, Danylo Vernygora, A. Kuryliuk, T. Tsaregradskaya

引用次数: 0

Fractional Synchronization of Antiferromagnetic Spin Hall Oscillator with External AC Signal 反铁磁自旋霍尔振荡器与外部交流信号的分式同步

2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP) Pub Date : 2021-09-05 DOI: 10.1109/NAP51885.2021.9568506

D. Slobodianiuk, O. Prokopenko

引用次数: 2

Magnetoresistive Effect and Magnetic Paraneters of Nanocrystalline Thin-film Alloys Based on Co, Fe and Cu Co, Fe和Cu纳米晶薄膜合金的磁阻效应和磁性参数

2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP) Pub Date : 2021-09-05 DOI: 10.1109/NAP51885.2021.9568507

I. Pazukha, D. Saltykov, Y. Shkurdoda, A. Saltykova, Valerii B. Loboda, V. V. Shchotkin, S. R. Dolgov-Gordiichuk

{"title":"Magnetoresistive Effect and Magnetic Paraneters of Nanocrystalline Thin-film Alloys Based on Co, Fe and Cu","authors":"I. Pazukha, D. Saltykov, Y. Shkurdoda, A. Saltykova, Valerii B. Loboda, V. V. Shchotkin, S. R. Dolgov-Gordiichuk","doi":"10.1109/NAP51885.2021.9568507","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568507","url":null,"abstract":"The paper presents the results of studies of the magnetoresistance effect and magnetic parameters of three-component film alloys based on the ferromagnetic alloy $mathrm{Fe}_{mathrm{x}}mathrm{Co}1-mathrm{x}$ and Cu with a thickness of 20-50 nm and at a concentration of cobalt atoms of $10leq cmathrm{c}_{0}leq 90$ aT.%. It is shown that for film alloys $mathrm{Fe}_{mathrm{x}}mathrm{C}_{01-mathrm{x}}$ in the entire range of studied concentrations and thicknesses at room temperature, the anisotropic nature of magnetoresistance is recorded, while for films $(mathrm{Fe}_{mathrm{x}}mathrm{C}_{01-mathrm{x}})_{0.5}mathrm{C}_{mathrm{u}0.5}$ at $xgt 0.6$ the magnetoresistance has an isotropic character. The dependences of the values of the coercive force BC and the saturation field BS on the content of Fe x atoms for film alloys $mathrm{Fe}_{mathrm{x}}mathrm{Co}1-mathrm{x}/mathrm{S}$ $Ta (mathrm{Fe}_{mathrm{x}}mathrm{c}_{01-mathrm{x}})_{0.5}mathrm{C}_{mathrm{u0.5}}/mathrm{S}$ with a thickness of 30 nm are analyzed.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"52 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":"85610290","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}

引用次数: 0

Nickel and Zinc Hydroxycarbonates are Precursors of Nanoscale Oxides 羟基碳酸盐镍和锌是纳米级氧化物的前体

2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP) Pub Date : 2021-09-05 DOI: 10.1109/NAP51885.2021.9568592

Oleh Denysov, E. Tantsiura, Kamila Abuzarova, O. Korchuganova

引用次数: 0

Structure Features of Surface Layers in Structural Steel after Laser-Plasma Alloying with 48(WC–W2 C) + 48Cr + 4Al Powder 48(wc - w2c) + 48Cr + 4Al粉末激光等离子体合金化后结构钢表层的组织特征

2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP) Pub Date : 2021-09-05 DOI: 10.1109/NAP51885.2021.9568516

O. Berdnikova, O. Kushnarova, A. Bernatskyi, Y. Polovetskyi, V. Kostin, M. Khokhlov

{"title":"Structure Features of Surface Layers in Structural Steel after Laser-Plasma Alloying with 48(WC–W2 C) + 48Cr + 4Al Powder","authors":"O. Berdnikova, O. Kushnarova, A. Bernatskyi, Y. Polovetskyi, V. Kostin, M. Khokhlov","doi":"10.1109/NAP51885.2021.9568516","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568516","url":null,"abstract":"The article presents the results of studying the surface layers of structural steel samples alloyed with 48(WC–W2 C) + 48Cr + 4Al powder materials mixture using laser-plasma alloying technology. ROFIN-SINAR Nd:YAG-laser DY044 (Germany) with irradiation wave length λ = 1.06 μm was used for laser alloying. Equipment and technologies of laser-plasma alloying were developed at the E.O. Paton Electric Welding Institute. Detailed studies at all structural levels of grain, subgrain, dislocation structures, including phase precipitates and their stoichiometric composition, were carried out using optical, scanning electron, and microdiffraction transmission electron microscopy. It was found that the formation of crack concentrators in the treated surfaces is due to such structural factors as coarse-grained structure, chemical inhomogeneity, and the formation of dislocation density gradients in grain-boundary areas. Under the optimal mode of laser-plasma alloying of the treated surfaces, a fine-grained structure is formed with a uniform distribution of the dislocation density. In this case, the dislocation substructure is characterized by a cellular type with a cell size of 50…110 nm and by the presence of dispersed phase precipitates up to 100 nm in size in the internal volumes of grains. Dispersion of the structure, the formation of a non-disoriented cellular dislocation substructure with a uniform distribution of dislocation density, the presence of dispersed phase precipitates (nanoscale type) will contribute to an increase in crack resistance and strength characteristics due to substructural and dispersion hardening.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"96 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":"76705665","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}

引用次数: 3

Features of Modeling the Processes of Formation of Films of Refractory Compounds 难熔化合物成膜过程建模的特点

2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP) Pub Date : 2021-09-05 DOI: 10.1109/NAP51885.2021.9568616

A. Goncharov, A. Yunda, Ivan S. Kolinko, S. Goncharova, Oleksii Fesenko

引用次数: 0

Impact Synthesis of Carbon Nitride Diamond-like Phases in a Supercritical Fluid 超临界流体中氮化碳类金刚石相的冲击合成

2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP) Pub Date : 2021-09-05 DOI: 10.1109/NAP51885.2021.9568587

A. Prudnikov, O. Budnyk, V. Dmitrenko, Y. Pashkevich

引用次数: 0