Low Temperature Physics最新文献

{"title":"Some aspects of the resistive-to-normal state transition caused by direct and microwave currents in superconducting thin films with phase slip lines","authors":"O. G. Turutanov, A. Sivakov, A. A. Leha, A. Pokhila, A. E. Kolinko, M. Grajcar","doi":"10.1063/10.0025294","DOIUrl":"https://doi.org/10.1063/10.0025294","url":null,"abstract":"Based on analysis of current-voltage characteristics and imaging of the resistive state of thin-film tin strips using low-temperature laser scanning microscopy (LTLSM), the process of destruction of superconductivity by current and microwave irradiation with the formation and spatial rearrangement of the order parameter phase slip lines, and their transformation into discrete localized normal domains are shown. The prospects of LTLSM are considered from the point of view of the study of the high-frequency properties of superconducting structures and spatial characteristics in the pre-critical state for instrumental applications.","PeriodicalId":18077,"journal":{"name":"Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140776125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Raman, UV-Vis, MS, and IR characterization of molecular-colloidal solution of hydrated fullerenes C60 obtained using vacuum-sublimation cryogenic deposition method. Is the C60 molecule truly highly hydrophobic?","authors":"S. V. Cherednichenko, G. V. Andrievsky, N. A. Vinnikov, A. V. Dolbin, M. V. Kosevich, V. S. Shelkovsky, R. M. Basnukaeva, O. P. Gnatyuk, O. Bezkrovnyi, M. Ptak, M. Chaika, P. O. Kuzema, G. I. Dovbeshko","doi":"10.1063/10.0024965","DOIUrl":"https://doi.org/10.1063/10.0024965","url":null,"abstract":"Vacuum-sublimation cryogenic deposition (VS-CD) method is successfully applied to produce fullerene water colloidal solution (FWCS): the melting of the solid phase of the mixture obtained by joint condensation of C60 fullerene and water vapors onto a surface cooled with liquid nitrogen results in formation of a stable colloidal solution. The results of the FWCS characterization by means of Raman, IR, and UV-Vis spectroscopy and their comparison with known literature data on hydrated fullerenes give the authors an opportunity to make conclusion that the FWCS contains C60@{H2O}n complexes of hydrated C60 fullerene. Transmission electron microscopy shows that the VS-CD-produced material contains predominantly small C60 clusters of about 2–5 nm size, while mass spectrometry with laser desorption/ionization has demonstrated the presence of pure fullerene C60 and the absence of any products of its transformation. The performed analysis reveals a close similarity of the stable C60@{H2O}n complexes generated by VS-CD with the previously known highly hydrophilic hydrated fullerene obtained by ultrasonication method.","PeriodicalId":18077,"journal":{"name":"Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140315524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural studies of amorphous polymer films: Experiment and calculation","authors":"D. E. Hurova, V. G. Geidarov, I. S. Braude, N. A. Aksenova, S. G. Stepanian, L. Adamowicz, N. N. Galtsov","doi":"10.1063/10.0024972","DOIUrl":"https://doi.org/10.1063/10.0024972","url":null,"abstract":"To analyze X-ray diffraction patterns obtained from polyimide films subjected to external influence (uniaxial tension and exposure at liquid helium temperature), radial distribution function (RDF) curves were constructed and the geometry of the 4,4′-oxydiphenylene-pyromellitimide monomer (PM) was calculated. From the RDF analysis, it follows that uniaxial tension of PM polymer films leads to a change in the geometry of the monomer, and exposure at low temperatures leads to mutual ordering of the polymer chains.","PeriodicalId":18077,"journal":{"name":"Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140315643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advantages of the low-temperature secondary emission mass spectrometry in analysis of metal ions in water samples revisited","authors":"O. A. Boryak, V. S. Shelkovsky, V. V. Orlov, V. G. Zobnina, M. V. Kosevich","doi":"10.1063/10.0024963","DOIUrl":"https://doi.org/10.1063/10.0024963","url":null,"abstract":"A problem of necessity of concentrating trace admixtures of metal ions required for ecological water analysis can be overcome by harnessing a physical phenomenon of phase separation in aqueous solutions during their freezing. It is shown that the accumulation of metal-containing solutes in the channels between ice crystallites in the frozen solids is sufficient for their successful detection by means of low-temperature secondary emission mass spectrometry. Sufficiency of microliters volumes of water is an advantage of such an approach. Observation of various types of metal ions in frozen water samples is demonstrated on the examples of tap water, sea water, snow and a medicinal preparation. Revisiting and summation of physical basics of mass spectrometric examining of frozen water-inorganic salt solutions and estimates of advancement of mass spectrometric instrumentation permit us to propose a workflow for accelerated and simplified mass spectrometric detection of metal pollutants in water.","PeriodicalId":18077,"journal":{"name":"Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140315452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced DNA Raman modes probed by SiO2 photonic crystals","authors":"M. Olenchuk, T. Hanulia, A. Nikolenko, G. Dovbeshko","doi":"10.1063/10.0024964","DOIUrl":"https://doi.org/10.1063/10.0024964","url":null,"abstract":"The study of large biomolecules, in particular DNA, is of practical interest. Marker bands of the Raman spectrum of DNA provide information about the conformational state and structure of the macromolecule. At the same time, when dealing with biological experiments, a small amount of DNA is available, which is why it is important to enhance the signal from DNA and find the proper substrate. However, it is difficult to enhance Raman spectra for large molecules as DNA without functionalization that could introduce changes in the DNA structure. In this work, a conventional substrate as CaF2 and a photonic crystal as a substrate with enhancer signal property and without DNA functionalization were applied. The factor of enhancement for DNA from salmon testes was reached up to 10 without Raman spectra distortion. The Raman spectral bands on different types of substrates are analyzed and compared.","PeriodicalId":18077,"journal":{"name":"Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140316890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of phase diagrams of H2O, D2O, and inert substances","authors":"L. A. Bulavin, Ye. G. Rudnikov, N. I. Lebovka","doi":"10.1063/10.0024971","DOIUrl":"https://doi.org/10.1063/10.0024971","url":null,"abstract":"The phase diagrams for the light H2O, heavy D2O water, and inert substances (Ne, Ar, Kr, and Xe) have been compared. A method of choosing the starting point for entropy and internal energy was proposed. It allowed testing the principle of corresponding states using caloric variables. In the given coordinates of temperature, pressure, and chemical potential, the water isotopologues form one group of substances and have similar phase diagrams. The inert substances in the same coordinates form another group of substances with similar phase diagrams. The phase diagrams for inert Ne with significant de Boer quantum parameters differ to a certain extent from the phase diagrams of other inert substances.","PeriodicalId":18077,"journal":{"name":"Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140315638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PMMA and PVP blended nanofibers with incorporated antimicrobial agent: Spectroscopy and mass spectrometry characterization","authors":"A. M. Plokhotnichenko, V. A. Karachevtsev, V. A. Pashynska, P. O. Kuzema","doi":"10.1063/10.0024959","DOIUrl":"https://doi.org/10.1063/10.0024959","url":null,"abstract":"Electrospun polymeric nanofibers incorporated with some medicines or biologically active nanoparticles have a huge range of various applications in biomedical fields such as wound dressing, drug delivery, and tissue engineering. Blending several polymers with different properties allows one to obtain a new material with improved physicochemical and mechanical characteristics, as well as to control the incorporation and release of medical agents, including antimicrobial, antifungal, and other substances. In this work, a novel approach to prepare a blend of two polymers [polyvinylpyrrolidone (PVP) and polymethyl methacrylate (PMMA)] to produce biocompatible nanofibers with incorporated antibacterial agents — phenylalanine or silver nanoparticles is proposed. The diameter of the obtained nanofibers is in the range of 2–4 μm. Antimicrobial agents are incorporated in PVP in an aqueous solution, then the prepared adduct is dried and mixed with PMMA in an organic solvent. In this nanofiber mat, PMMA provides the mechanical strength of the mat and assists in the gradual release of the antimicrobial agents. The formation of the PVP:PMMA nanofibers with incorporated antimicrobial agents at different stages was monitored by spectroscopy. The release of antimicrobial agents from the nanofibers mat during wetting was studied and confirmed by spectroscopy and mass spectrometry investigations.","PeriodicalId":18077,"journal":{"name":"Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140315526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ZnO sensitization by polymethine dye in photoelectrochemical cells for solar energy conversion","authors":"S. S. Fomanyuk, A. A. Ishchenko, M. A. Kudinova, I. A. Rusetskyi, M. O. Danilov, E. V. Gubareni, G. I. Dovbeshko, V. O. Smilyk, G. Ya. Kolbasov","doi":"10.1063/10.0024973","DOIUrl":"https://doi.org/10.1063/10.0024973","url":null,"abstract":"By sintering ZnO powder mixed with ethylene glycol, electrodes on a glass substrate with a conductive SnO2 layer were obtained. In parallel, Ti/TiO2 electrodes were obtained by anodizing a titanium foil. Electrodes based on ZnO and TiO2 were sensitized to visible light with a cationic polymethine dye. The analysis of the photoelectrochemical characteristics of the obtained electrodes showed that the dye-sensitized ZnO films in the wavelength range of 450–650 nm have a photocurrent quantum yield two-fold higher compared with TiO2. In this way, a hybrid dye-ZnO structure sensitive to visible light was formed, which can be used for the photoelectrochemical cells for solar energy conversion, as well as for the detection of DNA and proteins in biological sensors.","PeriodicalId":18077,"journal":{"name":"Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140315636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biochemical features of glycolysis in cancer cells with different metastatic potential","authors":"Solomia Hnatiuk, Denys Kolesnyk, Galina Solyanik","doi":"10.1063/10.0024974","DOIUrl":"https://doi.org/10.1063/10.0024974","url":null,"abstract":"It is known that, compared with normal cells, cancer cells are characterized by an intensification of glycolysis and an increase in glucose uptake to ensure high proliferative activity. Meanwhile, the question of the relationship between the intensity of glycolysis and the metastatic potential of tumor cells remains open. The aim of the study was to determine the rate of glucose uptake (GCR) and lactate production (LPR) by Lewis lung carcinoma cells with high (LLC) and low metastatic potential (LLC/R9) during 1-day growth in vitro under standard incubation conditions. The results showed that glycolysis intensity was significantly higher in low-metastatic Lewis lung carcinoma cells compared to the high-metastatic cells.","PeriodicalId":18077,"journal":{"name":"Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140315641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"War-derived air pollution nanohybrids and their membrane-active properties","authors":"Galyna Dovbeshko, Tatiana Borisova","doi":"10.1063/10.0024966","DOIUrl":"https://doi.org/10.1063/10.0024966","url":null,"abstract":"Hostilities are accompanied by extremely enhanced air pollution with particulate matter (PM) which was exactly shown in Ukraine, where increased PM2.5 (the size less than 2.5 μm) correlated with war activities [R. Zalakeviciute et al., Sustainability 14(21), 13832 (2022)]. Drastic increases in PM2.5 pollution from bombing and structural fires raise additional health concerns. Also, the widest spread of war-associated metal pollutants are copper and iron [Metal Pollutants Associated with War <https://ecopolitic.com.ua> (2023, November)] which are neurotoxic [B. Tarnacka et al., Int. J. Mol. Sci. 22(15), 7820 (2021)]. Calculations have revealed that Ukrainian regions are highly contaminated with copper and iron that in turn become bioavailable. Neurological disorders are the most common cause of disability/death and their increase is linked to air pollution with PM, which targets the nervous system triggering the development of neuropathology as shown in the epidemiological data of the Lancet Commission [P. J. Landrigan et al., Lancet 391, 462 (2018)]. Airborne PM can travel across state boundaries, oceans, and continents, and so disperses globally causing hazards to human health not only in Ukraine but also worldwide. Our hypothesis [T. Borisova, N. Krisanova, O. Gnatiuk, V. Boyko, and G. Dovbeshko, Project “War-derived air pollution nanohybrids composed of carbon-containing smoke nanoparticles and metal compounds: FTIR/Raman spectroscopic, fluorescent and membrane-active properties, their potential neurotoxicity and its prevention”, PAN.BFB.S.BWZ.380.022.2023] is that the neurotoxic potential of abandoned war-associated carbonaceous smoke nanoparticles can be significantly enhanced by copper and iron compounds during their combined release to the environment during bombing and fires. Moreover, they can form nanohybrids during interaction in the environment. This hypothesis is based on our recent experimental data regarding neurotoxic features of smoke PM from wood and plastics and their capability to interact with other pollutants [A. Borysov et al., Environ. Pollut. 263, 114502 (2020), A. Pastukhov et al., Sci. Rep. 13, 17771 (2023), T. Borisova, Environmental Nanoparticles: Focus on Multipollutant Strategy for Environmental Quality and Health Risk Estimations, Chapter in: Biomedical Nanomaterials, R. S. Stoika (ed.) (2021), pp. 305–321, T. Borisova and S. Komisarenko Environ Sci. Pollut. Res. 28(30), 40371 (2021)]. It is an urgent necessity to analyze the molecular structure and membrane-active properties of war-derived polluted nanohybrids composed of carbonaceous smoke nanoparticles, copper, and iron; to assess their potential neurotoxicity and to find a way of neuroprotection. Knowledge about the capability of different war-derived PM to form environmental nanohybrids with war-associated pollutant copper and iron, and their spectroscopic, fluorescent, and membrane-active features can be applicable in environmental monitoring. P","PeriodicalId":18077,"journal":{"name":"Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140315457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}