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Molecular Mobility of Perfluorinated Nafion and Aquvion Type Copolymers in the Sulfonyl Fluoride and Sulfonic Acid Forms Depending on the Number of Functionalized Substituents in the Polytetrafluoroethylene Main Chain
IF 0.8
Nanotechnologies in Russia Pub Date : 2025-03-24 DOI: 10.1134/S2635167624602043
N. V. Afanas’eva, A. R. Khairullin, G. N. Gubanova, E. N. Vlasova, V. K. Lavrent’ev, E. N. Popova, O. N. Primachenko, E. A. Marinenko, S. V. Kononova
{"title":"Molecular Mobility of Perfluorinated Nafion and Aquvion Type Copolymers in the Sulfonyl Fluoride and Sulfonic Acid Forms Depending on the Number of Functionalized Substituents in the Polytetrafluoroethylene Main Chain","authors":"N. V. Afanas’eva,&nbsp;A. R. Khairullin,&nbsp;G. N. Gubanova,&nbsp;E. N. Vlasova,&nbsp;V. K. Lavrent’ev,&nbsp;E. N. Popova,&nbsp;O. N. Primachenko,&nbsp;E. A. Marinenko,&nbsp;S. V. Kononova","doi":"10.1134/S2635167624602043","DOIUrl":"10.1134/S2635167624602043","url":null,"abstract":"<p>The interaction of water with air-dried membrane films and precursors of Nafion and Aquvion type membranes was investigated. The differential scanning calorimetry studies demonstrated the presence of free water in the films that was trapped at the stage of sample preparation. The dielectric spectroscopy results revealed two relaxation processes associated with the mobility of functionalized substituents in the polytetrafluoroethylene main chain for the polymers in the sulfonic acid form, with activation energies ranging from 12.9 to 33 kcal/mol, which indicates the “cooperativity” of local processes. The activation energies vary depending on both the length of a substituent and the distance between two neighboring substituents (the polymer chain parameter <i>n</i>). It was demonstrated by wide-angle X-ray scattering that an increase in the polymer chain parameter leads to an increase in the degree of crystallinity of Nafion copolymers in the sulfonyl fluoride form. The presence of “water-polymer” and “water-water” associates, as well as non-associated water molecules, was shown by infrared spectroscopy.</p>","PeriodicalId":716,"journal":{"name":"Nanotechnologies in Russia","volume":"19 1 supplement","pages":"S158 - S174"},"PeriodicalIF":0.8,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688613","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
On the Interaction of Individual Deposited Nickel Nanoparticles with Nitrous Oxide
IF 0.8
Nanotechnologies in Russia Pub Date : 2025-03-24 DOI: 10.1134/S2635167624602857
D. Baimukhambetova, A. K. Gatin, E. K. Golubev, S. A. Ozerin, V. G. Slutskii, M. V. Grishin
{"title":"On the Interaction of Individual Deposited Nickel Nanoparticles with Nitrous Oxide","authors":"D. Baimukhambetova,&nbsp;A. K. Gatin,&nbsp;E. K. Golubev,&nbsp;S. A. Ozerin,&nbsp;V. G. Slutskii,&nbsp;M. V. Grishin","doi":"10.1134/S2635167624602857","DOIUrl":"10.1134/S2635167624602857","url":null,"abstract":"<p>The features of the interaction of individual impurity-free nickel nanoparticles deposited onto the surface of highly oriented pyrolytic graphite, differing in terms of their geometric dimensions, with nitrous oxide (N<sub>2</sub>O) are studied. It is found that the results of exposing the samples to N<sub>2</sub>O depend on the nanoparticle shape and size. The surface of nickel nanoparticles with a height of 4–5 nm or more undergoes oxidation, while nickel nanoparticles with a height of up to 2 nm remain oxide free.</p>","PeriodicalId":716,"journal":{"name":"Nanotechnologies in Russia","volume":"19 1 supplement","pages":"S79 - S83"},"PeriodicalIF":0.8,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688618","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
Influence of Local Droplet Etching Modes on the Transformation of Nanoholes Formed by Focused Ion Beams on a GaAs(111) Surface
IF 0.8
Nanotechnologies in Russia Pub Date : 2025-03-24 DOI: 10.1134/S2635167624602341
S. V. Balakirev, N. E. Chernenko, E. A. Lakhina, D. V. Kirichenko, N. A. Shandyba, D. D. Dukhan, M. M. Eremenko, M. S. Solodovnik
{"title":"Influence of Local Droplet Etching Modes on the Transformation of Nanoholes Formed by Focused Ion Beams on a GaAs(111) Surface","authors":"S. V. Balakirev,&nbsp;N. E. Chernenko,&nbsp;E. A. Lakhina,&nbsp;D. V. Kirichenko,&nbsp;N. A. Shandyba,&nbsp;D. D. Dukhan,&nbsp;M. M. Eremenko,&nbsp;M. S. Solodovnik","doi":"10.1134/S2635167624602341","DOIUrl":"10.1134/S2635167624602341","url":null,"abstract":"<p>This paper presents for the first time the results of studying the influence of annealing modes of GaAs(111) substrates modified by focused ion beams on the transformation of the geometric characteristics of formed nanoholes due to the processes of local droplet etching. Experimental regularities of the influence of the number of ion beam passes, as well as the modes of substrate annealing (in an arsenic flux or its absence) on the shape, depth, and lateral size of nanoholes are established. The mechanism of transformation of the geometric characteristics of nanoholes formed at the points of influence of a focused ion beam during annealing under different modes leading to local droplet etching of the substrate at varying intensities is proposed.</p>","PeriodicalId":716,"journal":{"name":"Nanotechnologies in Russia","volume":"19 1 supplement","pages":"S37 - S44"},"PeriodicalIF":0.8,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688550","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
Introduction to Photonic Neural Networks
IF 0.8
Nanotechnologies in Russia Pub Date : 2025-03-24 DOI: 10.1134/S2635167625600129
M. E. Belkin, K. V. Shabelnik
{"title":"Introduction to Photonic Neural Networks","authors":"M. E. Belkin,&nbsp;K. V. Shabelnik","doi":"10.1134/S2635167625600129","DOIUrl":"10.1134/S2635167625600129","url":null,"abstract":"<p>The work briefly discusses: the development of photonic neural networks for artificial intelligence (AI) and the principles of their construction and stages of development. The types of training of AI neural networks, the advantages of such networks, as well as the scope of their application for creating more efficient AI systems based on the photonic approach are described.</p>","PeriodicalId":716,"journal":{"name":"Nanotechnologies in Russia","volume":"19 1 supplement","pages":"S26 - S31"},"PeriodicalIF":0.8,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688267","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
Synthesis of β-SiC Using Nanofibrous Carbon
IF 0.8
Nanotechnologies in Russia Pub Date : 2025-03-24 DOI: 10.1134/S2635167624602663
Yu. L. Krutskii, T. S. Gudyma, A. I. Aparnev, A. V. Loginov, T. M. Krutskaya, A. V. Ukhina, N. Yu. Cherkasova, O. V. Netskina, E. A. Maximovskiy
{"title":"Synthesis of β-SiC Using Nanofibrous Carbon","authors":"Yu. L. Krutskii,&nbsp;T. S. Gudyma,&nbsp;A. I. Aparnev,&nbsp;A. V. Loginov,&nbsp;T. M. Krutskaya,&nbsp;A. V. Ukhina,&nbsp;N. Yu. Cherkasova,&nbsp;O. V. Netskina,&nbsp;E. A. Maximovskiy","doi":"10.1134/S2635167624602663","DOIUrl":"10.1134/S2635167624602663","url":null,"abstract":"<p>The synthesis and study of the characteristics of β-phase silicon carbide powder is carried out. The compound is obtained by combining endothermic and exothermic reactions (carbothermic reduction of silicon dioxide and synthesis from simple substances) in an induction furnace in an atmosphere of nitrogen and carbon monoxide (CO). Nanofibrous carbon (NFC) is used as the reducing agent and carbide-forming reagent. This carbon agent is obtained as a result of the decomposition of light hydrocarbons. NFC is characterized by a high specific surface area (~150 m<sup>2</sup>/g) in comparison, for example, with carbon black (~50 m<sup>2</sup>/g). NFC is a fairly pure material and the impurity content in it does not exceed 1 wt %. Optimization of the synthesis conditions made it possible to obtain a single-phase product: cubic silicon carbide β-SiC. The powder had an average particle size of ~4 μm and a specific surface area of 7.7–8.4 m<sup>2</sup>/g. The resulting silicon carbide barely oxidizes when heated to 1000°C. Completion of the synthesis reaction is achieved for samples whose charge contained NFC, silicon oxide, and silicon powder in a molar ratio of 4 : 1 : 1, respectively. The optimal synthesis temperature is 1700–1900°C.</p>","PeriodicalId":716,"journal":{"name":"Nanotechnologies in Russia","volume":"19 1 supplement","pages":"S138 - S145"},"PeriodicalIF":0.8,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688574","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
Morphology and Wettability of Hexagonal BCxNy Films Prepared by Plasma-Enhanced Chemical Vapor Deposition from Trimethylamine Borane
IF 0.8
Nanotechnologies in Russia Pub Date : 2025-03-24 DOI: 10.1134/S2635167624600780
S. V. Belaya, E. A. Maksimovskiy, A. N. Kolodin, A. A. Shapovalova
{"title":"Morphology and Wettability of Hexagonal BCxNy Films Prepared by Plasma-Enhanced Chemical Vapor Deposition from Trimethylamine Borane","authors":"S. V. Belaya,&nbsp;E. A. Maksimovskiy,&nbsp;A. N. Kolodin,&nbsp;A. A. Shapovalova","doi":"10.1134/S2635167624600780","DOIUrl":"10.1134/S2635167624600780","url":null,"abstract":"<p>Hexagonal boron carbonitride films are obtained by plasma-enhanced chemical vapor deposition using a mixture of trimethylamine borane ((<i>Me</i>)<sub>3</sub>N·BH<sub>3</sub>) vapor and nitrogen in the temperature range 100‒700°C. The influence of the synthesis temperature, generator frequency, and plasma power on the chemical composition, structure, and morphology of the films is studied. The films obtained at temperatures of 200–700 and 300–700°C and generator frequencies of 27.12 and 13.56 MHz, respectively, are formed by nanowalls. Up to 600°C, the nanowalls have a maze-like morphology. The length of the nanowalls and the distance between them can be adjusted by changing the synthesis conditions. Above 600°C, nanowalls with a wavy morphology are formed. The contact angle of the water wetting of 200-nm-thick films varied within 0°‒62°.</p>","PeriodicalId":716,"journal":{"name":"Nanotechnologies in Russia","volume":"19 1 supplement","pages":"S84 - S92"},"PeriodicalIF":0.8,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688619","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
Increase in the Intensity of Free Radical Processes of Tumor Cells by Silver Bisilicate Nanoparticles 双硅酸银纳米粒子增加肿瘤细胞自由基过程的强度
IF 0.8
Nanotechnologies in Russia Pub Date : 2025-03-24 DOI: 10.1134/S2635167624602274
A. V. Shcherbanyuk, S. I. Moiseev, M. Yu. Frolova, S. N. Golyandin, N. A Germanov, N. V. Ulin, N. V. Kalmykova
{"title":"Increase in the Intensity of Free Radical Processes of Tumor Cells by Silver Bisilicate Nanoparticles","authors":"A. V. Shcherbanyuk,&nbsp;S. I. Moiseev,&nbsp;M. Yu. Frolova,&nbsp;S. N. Golyandin,&nbsp;N. A Germanov,&nbsp;N. V. Ulin,&nbsp;N. V. Kalmykova","doi":"10.1134/S2635167624602274","DOIUrl":"10.1134/S2635167624602274","url":null,"abstract":"<p>The chemiluminescence intensity (CI) when normal and tumor cells of humans are exposed to nanostructured silver bisilicate Ag<sub>6</sub>Si<sub>2</sub>O<sub>7</sub> (silver atomic clusters, SACs) are measured. The following cell types are used: skin fibroblasts F022, mesenchymal stromal cells (MSCs) M032, multiple myeloma cells RPMI8226, and acute myelogenous leukemia cells KG1. The chemiluminescence parameters (total light sum (<b><i>S</i></b>) and the maximal light intensity (<i>I</i><sub>max</sub>)) of normal cells increase by 1.4–1.5 times after adding SACs compared to the reference values regardless of the SAC concentration. The <i>S</i> and <i>I</i><sub>max</sub> values for tumor cells are between 2.1 and 2.8 times higher than the reference values depending on the SACs dose. In the reference data the tumor cells show a higher slope ratio of the trailing edge of radiation pulse of the CI decrease curve (1.02–1.10) than the normal cells (0.67–0.72). SACs with a concentration of 2.0–3.0 µg/mL significantly decrease tumor cell viability and do not affect normal cells. A higher sensitivity to SACs corresponds to a higher CI level in the cells.</p>","PeriodicalId":716,"journal":{"name":"Nanotechnologies in Russia","volume":"19 1 supplement","pages":"S195 - S201"},"PeriodicalIF":0.8,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688322","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
Comparison of Pharmacokinetic Parameters and Biodistribution of Full-Size Antibodies and Nanoantibodies Specific to Human PD-L1
IF 0.8
Nanotechnologies in Russia Pub Date : 2025-03-24 DOI: 10.1134/S2635167624602742
N. Verlov, O. Shashkova, I. Krutetskaya, L. Terekhina, S. Shatik, A. Pinevich, V. Burdakov, I. Kulakov, T. Shtam, A. Konevega, A. Stanzhevskii, M. Samoilovich
{"title":"Comparison of Pharmacokinetic Parameters and Biodistribution of Full-Size Antibodies and Nanoantibodies Specific to Human PD-L1","authors":"N. Verlov,&nbsp;O. Shashkova,&nbsp;I. Krutetskaya,&nbsp;L. Terekhina,&nbsp;S. Shatik,&nbsp;A. Pinevich,&nbsp;V. Burdakov,&nbsp;I. Kulakov,&nbsp;T. Shtam,&nbsp;A. Konevega,&nbsp;A. Stanzhevskii,&nbsp;M. Samoilovich","doi":"10.1134/S2635167624602742","DOIUrl":"10.1134/S2635167624602742","url":null,"abstract":"<p>The study of pharmacokinetic parameters and biodistribution of radiopharmaceuticals is the most important stage in the study of their effectiveness and safety for clinical usage. In the present work, a comparative study of <sup>125</sup>I-labeled full-size therapeutic antibodies to human PD-L1 and recombinant single-domain heavy-chain antibodies (VHH) specific to the same biomarker was conducted. A mouse model of the tumor process induced by transplantation of CT26-PD-L1 recombinant cells stably expressing human PD-L1 receptor on their surface was used. The half-life time for VHH was almost 10 times shorter than for full-size antibodies while both pharmaceuticals demonstrated the ability of specific accumulation in CT26-PD-L1 tumor. The route of excretion for both drugs was mainly through urine. An abnormally rapid decrease of VHH concentration in the blood of mice was noted at the first 5 min after the radioconjugate administration.</p>","PeriodicalId":716,"journal":{"name":"Nanotechnologies in Russia","volume":"19 1 supplement","pages":"S210 - S217"},"PeriodicalIF":0.8,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688456","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
Morphology and Stability of Composite Silicon–Silver Nanoparticles Produced by Laser Ablation in a Liquid
IF 0.8
Nanotechnologies in Russia Pub Date : 2025-03-24 DOI: 10.1134/S2635167624602729
V. Yu. Nesterov, S. V. Zabotnov, D. V. Shuleiko, D. E. Presnov, O. I. Sokolovskaya, N. A. Smirnov, L. A. Golovan, P. K. Kashkarov
{"title":"Morphology and Stability of Composite Silicon–Silver Nanoparticles Produced by Laser Ablation in a Liquid","authors":"V. Yu. Nesterov,&nbsp;S. V. Zabotnov,&nbsp;D. V. Shuleiko,&nbsp;D. E. Presnov,&nbsp;O. I. Sokolovskaya,&nbsp;N. A. Smirnov,&nbsp;L. A. Golovan,&nbsp;P. K. Kashkarov","doi":"10.1134/S2635167624602729","DOIUrl":"10.1134/S2635167624602729","url":null,"abstract":"<p>The possibility of the liquid-phase laser synthesis of silver-decorated silicon nanoparticles with an average diameter of about 120 nm, a diameter dispersion of less than 40 nm, and a size of decorating Ag nanoclusters in the range from 5 to 15 nm is shown as a result of the picosecond laser ablation of silicon targets in a water-ethanol solution containing dissolved silver nitrate (AgNO<sub>3</sub>) crystals. At a fixed laser pulses exposure time, the morphology of the nanoparticles depends on the ratio of water and ethanol in the solution and the concentration of silver nitrate. It is demonstrated that the pH factor of the buffer medium has a direct influence on the stability and decorative coating properties of the produced nanoparticles.</p>","PeriodicalId":716,"journal":{"name":"Nanotechnologies in Russia","volume":"19 1 supplement","pages":"S50 - S58"},"PeriodicalIF":0.8,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688552","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
Combined Metalens for Detecting Optical Vortices and Polarization States
IF 0.8
Nanotechnologies in Russia Pub Date : 2025-03-24 DOI: 10.1134/S2635167624602687
A. G. Nalimov, V. V. Kotlyar
{"title":"Combined Metalens for Detecting Optical Vortices and Polarization States","authors":"A. G. Nalimov,&nbsp;V. V. Kotlyar","doi":"10.1134/S2635167624602687","DOIUrl":"10.1134/S2635167624602687","url":null,"abstract":"<p>A metasurface, including a metalens, in a thin film of amorphous silicon for the visible range is considered. This metasurface enables the simultaneous determination of topological charges –1, 1, –2, and 2 and the direction of rotation of the polarization vector (clockwise or counterclockwise) in an axial superposition of four optical vortices with left- and right-handed circular polarization by measuring the intensity at several specified points at a certain distance from it. The metasurface is composed of two simpler metasurfaces, parts of which are assembled into a combined metasurface in a checkerboard pattern. To form a metalens, a binary zone plate is embedded into the metasurface. The working element of the metasurface (its meta-atom) is a binary subwavelength diffraction grating, the rotation angle of the polarization vector of which depends on the slopes of the lines.</p>","PeriodicalId":716,"journal":{"name":"Nanotechnologies in Russia","volume":"19 1 supplement","pages":"S59 - S67"},"PeriodicalIF":0.8,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688458","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
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