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PHYSICS (576 journals)                  1 2 3 | Last

Showing 1 - 200 of 741 Journals sorted alphabetically
Acta Acustica united with Acustica     Full-text available via subscription   (Followers: 8)
Acta Mechanica     Hybrid Journal   (Followers: 20)
Acta Scientifica Naturalis     Open Access   (Followers: 2)
Advanced Composite Materials     Hybrid Journal   (Followers: 67)
Advanced Functional Materials     Hybrid Journal   (Followers: 51)
Advanced Materials     Hybrid Journal   (Followers: 282)
Advanced Science Focus     Free   (Followers: 3)
Advanced Structural and Chemical Imaging     Open Access   (Followers: 2)
Advanced Studies in Theoretical Physics     Open Access  
Advances in Condensed Matter Physics     Open Access   (Followers: 9)
Advances in Exploration Geophysics     Full-text available via subscription   (Followers: 3)
Advances in Geophysics     Full-text available via subscription   (Followers: 6)
Advances in High Energy Physics     Open Access   (Followers: 19)
Advances in Imaging and Electron Physics     Full-text available via subscription   (Followers: 2)
Advances in Materials Physics and Chemistry     Open Access   (Followers: 23)
Advances in Natural Sciences: Nanoscience and Nanotechnology     Open Access   (Followers: 30)
Advances in OptoElectronics     Open Access   (Followers: 5)
Advances In Physics     Hybrid Journal   (Followers: 20)
Advances in Physics : X     Open Access  
Advances in Physics Theories and Applications     Open Access   (Followers: 12)
Advances in Remote Sensing     Open Access   (Followers: 40)
AIP Advances     Open Access   (Followers: 8)
AIP Conference Proceedings     Full-text available via subscription   (Followers: 3)
American Journal of Condensed Matter Physics     Open Access   (Followers: 4)
American Journal of Signal Processing     Open Access   (Followers: 11)
Analysis and Mathematical Physics     Hybrid Journal   (Followers: 3)
Annalen der Physik     Hybrid Journal   (Followers: 5)
Annales Geophysicae (ANGEO)     Open Access   (Followers: 15)
Annales Henri Poincaré     Hybrid Journal   (Followers: 3)
Annales UMCS, Physica     Open Access  
Annals of Nuclear Medicine     Hybrid Journal   (Followers: 4)
Annals of Physics     Hybrid Journal   (Followers: 4)
Annals of West University of Timisoara - Physics     Open Access   (Followers: 1)
Annual Reports on NMR Spectroscopy     Full-text available via subscription   (Followers: 4)
Annual Review of Analytical Chemistry     Full-text available via subscription   (Followers: 11)
Annual Review of Condensed Matter Physics     Full-text available via subscription  
Annual Review of Materials Research     Full-text available via subscription   (Followers: 5)
APL Materials     Open Access   (Followers: 13)
Applied Composite Materials     Hybrid Journal   (Followers: 48)
Applied Physics A     Hybrid Journal   (Followers: 7)
Applied Physics Frontier     Open Access   (Followers: 1)
Applied Physics Letters     Hybrid Journal   (Followers: 33)
Applied Physics Research     Open Access   (Followers: 3)
Applied Physics Reviews     Hybrid Journal   (Followers: 10)
Applied Radiation and Isotopes     Hybrid Journal   (Followers: 7)
Applied Spectroscopy     Full-text available via subscription   (Followers: 22)
Applied Spectroscopy Reviews     Hybrid Journal   (Followers: 4)
Archive for Rational Mechanics and Analysis     Hybrid Journal  
Asia Pacific Physics Newsletter     Hybrid Journal  
ASTRA Proceedings     Open Access   (Followers: 1)
Astronomy & Geophysics     Hybrid Journal   (Followers: 46)
Astronomy and Astrophysics Review     Hybrid Journal   (Followers: 22)
Astrophysical Journal Supplement Series     Full-text available via subscription   (Followers: 9)
Atoms     Open Access   (Followers: 1)
Attention, Perception & Psychophysics     Full-text available via subscription   (Followers: 12)
Autonomous Mental Development, IEEE Transactions on     Hybrid Journal   (Followers: 9)
Axioms     Open Access   (Followers: 1)
Bangladesh Journal of Medical Physics     Open Access  
Bauphysik     Hybrid Journal   (Followers: 2)
Berkala Fisika Indonesia     Open Access  
Biomaterials     Hybrid Journal   (Followers: 45)
Biomedical Engineering, IEEE Reviews in     Full-text available via subscription   (Followers: 18)
Biomedical Engineering, IEEE Transactions on     Hybrid Journal   (Followers: 34)
Biophysical Reviews     Hybrid Journal   (Followers: 1)
Biophysical Reviews and Letters     Hybrid Journal   (Followers: 3)
BMC Biophysics     Open Access   (Followers: 5)
Boson Journal of Modern Physics     Open Access   (Followers: 12)
Brazilian Journal of Physics     Hybrid Journal  
Broadcasting, IEEE Transactions on     Hybrid Journal   (Followers: 10)
Bulletin of Materials Science     Open Access   (Followers: 43)
Bulletin of the Atomic Scientists     Hybrid Journal   (Followers: 4)
Bulletin of the Lebedev Physics Institute     Hybrid Journal   (Followers: 1)
Bulletin of the Russian Academy of Sciences: Physics     Hybrid Journal   (Followers: 2)
Caderno Brasileiro de Ensino de Física     Open Access  
Canadian Journal of Physics     Hybrid Journal   (Followers: 14)
Case Studies in Nondestructive Testing and Evaluation     Open Access   (Followers: 11)
Cells     Open Access   (Followers: 2)
CERN courier. International journal of high energy physics     Free   (Followers: 7)
Chemical Physics of Solid Surfaces     Full-text available via subscription  
Chinese Journal of Astronomy and Astrophysics     Full-text available via subscription   (Followers: 14)
Chinese Journal of Chemical Physics     Hybrid Journal   (Followers: 1)
Chinese Journal of Physics     Hybrid Journal  
Chinese Physics B     Full-text available via subscription  
Chinese Physics C     Full-text available via subscription  
Chinese Physics Letters     Full-text available via subscription  
Cogent Physics     Open Access   (Followers: 1)
Cohesion and Structure     Full-text available via subscription   (Followers: 2)
Colloid Journal     Hybrid Journal   (Followers: 2)
Communications in Mathematical Physics     Hybrid Journal   (Followers: 2)
Communications in Numerical Methods in Engineering     Hybrid Journal   (Followers: 2)
Communications in Theoretical Physics     Full-text available via subscription   (Followers: 3)
Complex Analysis and its Synergies     Open Access   (Followers: 2)
Composites Part A : Applied Science and Manufacturing     Hybrid Journal   (Followers: 200)
Composites Part B : Engineering     Hybrid Journal   (Followers: 257)
Computational Astrophysics and Cosmology     Open Access   (Followers: 1)
Computational Condensed Matter     Open Access  
Computational Materials Science     Hybrid Journal   (Followers: 21)
Computational Mathematics and Mathematical Physics     Hybrid Journal   (Followers: 3)
Computational Particle Mechanics     Hybrid Journal   (Followers: 1)
Computational Science and Discovery     Full-text available via subscription   (Followers: 2)
Computer Physics Communications     Hybrid Journal   (Followers: 6)
Condensed Matter     Open Access  
Contemporary Concepts of Condensed Matter Science     Full-text available via subscription  
Contemporary Physics     Hybrid Journal   (Followers: 26)
Continuum Mechanics and Thermodynamics     Hybrid Journal   (Followers: 8)
Contributions to Plasma Physics     Hybrid Journal   (Followers: 3)
COSPAR Colloquia Series     Full-text available via subscription   (Followers: 7)
Cryogenics     Hybrid Journal   (Followers: 52)
Current Applied Physics     Full-text available via subscription   (Followers: 4)
Current Science     Open Access   (Followers: 64)
Diagnostic and Interventional Imaging     Full-text available via subscription  
Diamond and Related Materials     Hybrid Journal   (Followers: 12)
Doklady Physics     Hybrid Journal   (Followers: 1)
Dynamical Properties of Solids     Full-text available via subscription  
East European Journal of Physics     Open Access  
ECS Journal of Solid State Science and Technology     Hybrid Journal   (Followers: 6)
Egyptian Journal of Remote Sensing and Space Science     Open Access   (Followers: 20)
EJNMMI Physics     Open Access  
Electrospinning     Open Access  
Embedded Systems Letters, IEEE     Hybrid Journal   (Followers: 43)
Energy Procedia     Open Access   (Followers: 2)
Engineering Failure Analysis     Hybrid Journal   (Followers: 68)
Engineering Fracture Mechanics     Hybrid Journal   (Followers: 24)
Environmental Fluid Mechanics     Hybrid Journal   (Followers: 6)
EPJ Nonlinear Biomedical Physics     Open Access  
EPJ Quantum Technology     Open Access  
EPJ Techniques and Instrumentation     Full-text available via subscription  
EPJ Web of Conferences     Open Access  
European Journal of Physics     Full-text available via subscription   (Followers: 18)
European Physical Journal - Applied Physics     Full-text available via subscription   (Followers: 16)
European Physical Journal C     Hybrid Journal   (Followers: 1)
Europhysics News     Open Access  
Experimental Mechanics     Hybrid Journal   (Followers: 22)
Experimental Methods in the Physical Sciences     Full-text available via subscription  
Experimental Techniques     Hybrid Journal   (Followers: 56)
Exploration Geophysics     Hybrid Journal   (Followers: 4)
Few-Body Systems     Hybrid Journal  
Fire and Materials     Hybrid Journal   (Followers: 5)
Flexible Services and Manufacturing Journal     Hybrid Journal   (Followers: 1)
Fluctuation and Noise Letters     Hybrid Journal   (Followers: 1)
Fluid Dynamics     Hybrid Journal   (Followers: 14)
Fortschritte der Physik/Progress of Physics     Hybrid Journal  
Frontiers in Physics     Open Access   (Followers: 6)
Frontiers of Materials Science     Hybrid Journal   (Followers: 4)
Frontiers of Physics     Hybrid Journal   (Followers: 2)
Fusion Engineering and Design     Hybrid Journal   (Followers: 10)
Geochemistry, Geophysics, Geosystems     Full-text available via subscription   (Followers: 31)
Geografiska Annaler, Series A : Physical Geography     Hybrid Journal   (Followers: 3)
Geophysical Research Letters     Full-text available via subscription   (Followers: 134)
Geoscience and Remote Sensing, IEEE Transactions on     Hybrid Journal   (Followers: 172)
Glass Physics and Chemistry     Hybrid Journal   (Followers: 4)
Granular Matter     Hybrid Journal   (Followers: 1)
Graphs and Combinatorics     Hybrid Journal   (Followers: 7)
Gravitation and Cosmology     Hybrid Journal   (Followers: 3)
Handbook of Geophysical Exploration: Seismic Exploration     Full-text available via subscription  
Handbook of Metal Physics     Full-text available via subscription  
Handbook of Surface Science     Full-text available via subscription   (Followers: 4)
Handbook of Thermal Analysis and Calorimetry     Full-text available via subscription   (Followers: 1)
Haptics, IEEE Transactions on     Hybrid Journal   (Followers: 4)
Heat Transfer - Asian Research     Hybrid Journal   (Followers: 12)
High Energy Density Physics     Hybrid Journal   (Followers: 2)
High Pressure Research: An International Journal     Hybrid Journal   (Followers: 3)
IEEE Journal of Quantum Electronics     Hybrid Journal   (Followers: 22)
IEEE Signal Processing Magazine     Full-text available via subscription   (Followers: 72)
IET Optoelectronics     Hybrid Journal   (Followers: 1)
Il Colle di Galileo     Open Access  
Image Analysis & Stereology     Open Access  
Imaging Science Journal     Hybrid Journal   (Followers: 3)
Indian Journal of Biochemistry and Biophysics (IJBB)     Open Access   (Followers: 3)
Indian Journal of Physics     Hybrid Journal   (Followers: 20)
Indian Journal of Pure & Applied Physics (IJPAP)     Open Access   (Followers: 38)
Indian Journal of Radio & Space Physics (IJRSP)     Open Access   (Followers: 37)
Industrial Electronics, IEEE Transactions on     Hybrid Journal   (Followers: 42)
Industry Applications, IEEE Transactions on     Hybrid Journal   (Followers: 11)
Infinite Dimensional Analysis, Quantum Probability and Related Topics     Hybrid Journal  
InfraMatics     Open Access  
Infrared Physics & Technology     Hybrid Journal   (Followers: 11)
Intelligent Transportation Systems Magazine, IEEE     Full-text available via subscription   (Followers: 10)
Intermetallics     Hybrid Journal   (Followers: 23)
International Applied Mechanics     Hybrid Journal   (Followers: 3)
International Geophysics     Full-text available via subscription   (Followers: 3)
International Heat Treatment and Surface Engineering     Hybrid Journal   (Followers: 5)
International Journal for Computational Methods in Engineering Science and Mechanics     Hybrid Journal   (Followers: 11)
International Journal for Ion Mobility Spectrometry     Hybrid Journal   (Followers: 1)
International Journal for Simulation and Multidisciplinary Design Optimization     Open Access   (Followers: 4)
International Journal of Abrasive Technology     Hybrid Journal   (Followers: 2)
International Journal of Aeroacoustics     Hybrid Journal   (Followers: 36)
International Journal of Applied Electronics in Physics & Robotics     Open Access   (Followers: 4)
International Journal of Astronomy and Astrophysics     Open Access   (Followers: 24)
International Journal of Computational Materials Science and Surface Engineering     Hybrid Journal   (Followers: 6)
International Journal of Damage Mechanics     Hybrid Journal   (Followers: 5)
International Journal of Fatigue     Hybrid Journal   (Followers: 37)
International Journal of Fracture     Hybrid Journal   (Followers: 12)
International Journal of Geometric Methods in Modern Physics     Hybrid Journal   (Followers: 2)
International Journal of Heat and Fluid Flow     Hybrid Journal   (Followers: 35)
International Journal of Low Radiation     Hybrid Journal   (Followers: 1)
International Journal of Low-Carbon Technologies     Open Access   (Followers: 1)
International Journal of Mass Spectrometry     Hybrid Journal   (Followers: 17)
International Journal of Material Forming     Hybrid Journal   (Followers: 1)
International Journal of Materials and Product Technology     Hybrid Journal   (Followers: 4)

        1 2 3 | Last

Journal Cover Colloid Journal
  [SJR: 0.316]   [H-I: 23]   [2 followers]  Follow
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 1608-3067 - ISSN (Online) 1061-933X
   Published by Springer-Verlag Homepage  [2355 journals]
  • The role of the scale factor in the structure-related mechanical behavior
           of glassy polymers
    • Authors: O. V. Arzhakova; A. A. Dolgova; P. A. Kechek’yan; E. G. Rukhlya; A. S. Kechek’yan; A. L. Volynskii
      Pages: 715 - 734
      Abstract: Literature data on the effect of the scale factor on the structure and properties of polymers have been analyzed. Two modes of the scale factor have been revealed. The first mode is related to the sizes of a polymer phase. This factor manifests itself when the polymer phase sizes become comparable with the sizes of a macromolecular coil. The second mode is directly associated with the sizes of a polymer sample and becomes detectable when investigating bulky polymer samples. The scale factor has been shown to substantially affect the structure-related mechanical behavior of loaded polymers, in particular, the stress–strain curves characterizing glassy polymers.
      PubDate: 2017-11-01
      DOI: 10.1134/s1061933x17060035
      Issue No: Vol. 79, No. 6 (2017)
  • An aqueous colloidal silver solution stabilized with carbonate ions
    • Authors: E. V. Abkhalimov; V. A. Ershov; B. G. Ershov
      Pages: 735 - 739
      Abstract: A method has been developed for the preparation of a stable “pure” silver hydrosol containing nanoparticles with an average size of 10 nm and stabilizing carbonate ions. The method consists in the photochemical reduction of silver ions with oxalate ions, which simultaneously generate carbonate ions. Optical spectroscopy, electron microscopy, and dynamic light scattering are used to study the hydrosol
      PubDate: 2017-11-01
      DOI: 10.1134/s1061933x17060023
      Issue No: Vol. 79, No. 6 (2017)
  • Swelling kinetics of cross-linked polymer gels based on polystyrene and
           poly(vinyl alcohol) in aqueous solutions of electrolytes and sucrose
    • Authors: A. N. Gagarin; N. B. Ferapontov; M. G. Tokmachev
      Pages: 740 - 747
      Abstract: The swelling kinetics of polymer gels has been studied in water and aqueous solutions by optical micrometry. Cross-linked hydrophilic polymers based on polystyrene and poly(vinyl alcohol) have been used as gel-forming materials. The effects of the natures of the matrices and polar groups of the polymers and their cross-linking densities and granule sizes, as well as the properties of external phase, on the swelling kinetics of the polymer gels have been investigated. The experimental results have been processed in terms of a heterophase kinetic model. The applicability of the model to describing the behavior of all studied systems has been shown.
      PubDate: 2017-11-01
      DOI: 10.1134/s1061933x17060096
      Issue No: Vol. 79, No. 6 (2017)
  • Analytical micelles containing amphiphilic aminoanthraquinone
           solvatochromic reporter receptor
    • Authors: E. V. Ermakova; V. V. Arslanov
      Pages: 748 - 761
      Abstract: The feasibility of using an amphiphilic photoactive derivative of aminoanthraquinone (C18) as both a local solvatochromic probe reporting its position in a micelle and a component of an analytical supramolecular unit in mixed micelles based on a nonionic surfactant, Triton X100, has been considered. The solvatochromism of the 1,8-anthraquinone derivative (C18) has, for the first time, been investigated. Dipole moments of C18 molecules have been determined within the frameworks of the Lippert–Mataga, Kawski, and Reichardt approaches. It has been found that the Δμ values, as calculated with the help of the first two approaches and the Onsager radius, which is, for C18, equal to 5.8 Å, are markedly higher than the value obtained in terms of the Reichardt model. Possible reasons for discrepancies, which arise between experimental data and theoretical predictions when analyzing the solvatochromic properties of dyes, have been briefly discussed. C18 has been employed as an example to show that, for chromophores capable of donor–acceptor interactions, the use of protic solvents is more reasonable, because they ensure realization of a wider spectrum of interactions with a probe, among which the van der Waals interactions play an important role. Therewith, polarization effects, rather than charge separation, make a substantial contribution. In the case of amphiphilic chromophores, “enveloping” of polar groups with hydrocarbon chains decreases the local dielectric permittivity and the probability of intermolecular donor–acceptor interactions (hydrogen bonding). The character of the microenvironment of C18 reporter in micelles has been determined with the use of the “relative polarity parameter” proposed in this work. This parameter makes it possible to compare results obtained for different models of solvatochromism. It has been shown that the characteristics of C18 microenvironment in micelles correspond to those of water–alcohol solutions, with the chromophoric moieties of dye molecules located in the polar region of a micelle, this region being formed by hydrated ethylene-oxide chains of Triton X100. Polar receptor groups of C18, which face the aqueous phase, complete the hydrophilic shell of a micelle, while hydrocarbon chains of both components compose its hydrophobic core. This structure of the normal micelle and the markedly higher intensity of fluorescence of the micellar system than that of an aqueous C18 solution make possible the analytical determination of metal ions in aqueous media.
      PubDate: 2017-11-01
      DOI: 10.1134/s1061933x17060060
      Issue No: Vol. 79, No. 6 (2017)
  • Electrokinetic characteristics of initial porous glasses and those
           modified with titanium- and aluminum-oxide particles
    • Authors: L. E. Ermakova; A. V. Volkova; T. V. Antropova; N. O. Orbeli; I. N. Anfimova
      Pages: 762 - 772
      Abstract: The structural (volume porosity, structural resistance coefficient, and average pore radius) and electrokinetic (specific electrical conductivity, ion-transport numbers, and electrokinetic potential) characteristics of macroporous glass membranes obtained from two-phase sodium-borosilicate glasses with different times of thermal treatment have been studied in solutions of hydrochloric acid and potassium chloride. The properties of the initial membranes have been compared with the characteristics of the same membranes modified by filtering through them suspensions of aluminum- and titanium-oxide nanoparticles with different weight concentrations. It has been shown that, at low degrees of pore channel surface coverage with nanoparticles (<0.1), the structural parameters of the membranes remain almost unchanged. In addition, it has been found that the presence of positively charged nanoparticles on the negatively charged surface increases the surface conductivity and the absolute value of the electrokinetic potential.
      PubDate: 2017-11-01
      DOI: 10.1134/s1061933x17060072
      Issue No: Vol. 79, No. 6 (2017)
  • Sorbostriction of FAS-3 microporous carbon adsorbent upon vapor adsorption
           from a flow of nitrogen carrier gas
    • Authors: D. S. Zaitsev; A. V. Tvardovskii; A. V. Shkolin; V. V. Gur’yanov; V. V. Nabiullin; A. A. Fomkin
      Pages: 773 - 778
      Abstract: Sorbostriction (adsorption-induced deformation) of FAS-3 microporous carbon adsorbent is investigated under dynamic conditions upon adsorption of benzene, carbon tetrachloride, and n-hexane vapors from a flow of nitrogen carrier gas at 573 K. The values of maximum deformation and corresponding times depend on the amount of an adsorptive. The peak time of sorbostriction curves is different for each substance under study, which makes it possible to use the effect of wavelike sorbostriction for the development of sensors for the control of qualitative and quantitative compositions of gas mixtures.
      PubDate: 2017-11-01
      DOI: 10.1134/s1061933x17060175
      Issue No: Vol. 79, No. 6 (2017)
  • Evaporation dynamics of a binary sessile droplet: Theory and comparison
           with experimental data on a droplet of a sulfuric-acid solution
    • Authors: A. E. Kuchma; N. E. Esipova; A. A. Mikheev; A. K. Shchekin; S. V. Itskov
      Pages: 779 - 787
      Abstract: Diffusion evaporation of a sessile binary droplet in an atmosphere of a noncondensable carrier gas has been considered. For a droplet consisting of two infinitely miscible liquids, a relation between the current values of solution concentration and volume of the droplet has been derived in an explicit form under the ideal solution approximation. It has been shown that the volume of a sessile binary droplet may, as well as the volume of a free binary droplet, vary nonmonotonically with time. The evaporation of a droplet of an aqueous sulfuric-acid solution has been considered in detail taking into account the nonideality of the solution. Time variations in the volume, base area, and contact angle have been experimentally measured for the sessile droplet of an aqueous sulfuric-acid solution on a hydrophobized substrate. The experimental data obtained at different initial humidities of water-vapor and droplet-solution concentrations have been analyzed within the theory of the stationary isothermal diffusion evaporation of a sessile binary droplet.
      PubDate: 2017-11-01
      DOI: 10.1134/s1061933x17060102
      Issue No: Vol. 79, No. 6 (2017)
  • A study of cryostructuring of polymer systems. 46. physicochemical
           properties and microstructure of poly(vinyl alcohol) cryogels formed from
           polymer solutions in mixtures of dimethyl sulfoxide with
           low-molecular-mass alcohols
    • Authors: V. I. Lozinsky; I. M. Leonova; R. V. Ivanov; I. V. Bakeeva
      Pages: 788 - 796
      Abstract: Poly(vinyl alcohol) (PVA) cryogels (PVACGs) are obtained and studied. The PVACGs are formed by freezing–defrosting of polymer solutions in dimethyl sulfoxide (DMSO) or its mixtures with one of the first members of the series low-molecular-mass aliphatic alcohols (methanol, ethanol, n-propanol, and n-butanol). PVA content in these solutions is 100 g/L, while the concentration of an aliphatic alcohol is varied in a range of 0.44–2.55 mol/L depending on its nature. The polymer solutions are subjected to the cryogenic treatment at temperatures 30, 40, or 50°C lower than the crystallization temperature of DMSO (+18.4°C). The frozen samples are defrosted at a heating rate of 0.03°C/min. It is shown that, in a certain range of lowmolecular-mass alcohol content in an initial system, its cryogenic treatment yields coarse-pored heterophase cryogels that have higher rigidity and heat endurance than those of DMSO–PVA cryogels. It has been shown that polymer cryoconcentration and phase separation play important roles in the formation of a cellular microstructure and an increase in the rigidity and heat endurance of PVACGs obtained in the presence of low-molecular-mass alcohols.
      PubDate: 2017-11-01
      DOI: 10.1134/s1061933x17060114
      Issue No: Vol. 79, No. 6 (2017)
  • Aqueous solutions of hydroxypropyl cellulose, Tween 80 and their binary
           mixtures: Colloid-chemical aspects
    • Authors: M. V. Poteshnova; N. M. Zadymova
      Pages: 797 - 808
      Abstract: Tensiometry, dynamic light scattering, and rheology have been used to study the colloid-chemical properties of hydroxypropyl cellulose, Tween 80, and binary mixtures thereof in an aqueous medium and at water/decane and water/air interfaces. The efficiency of a reduction in the interfacial energy under dynamic and static conditions, the surface activity of the components, capability of self-organization in bulk and at interfaces, as well as emulsifying efficiency of the systems, have been analyzed. It has been found that, in a narrow concentration range and at a certain ratio of the components, they exhibit a synergetic effect with respect to a reduction in the interfacial energy, with this effect being due to the formation of a Tween 80–polymer bilayer via hydrogen bonding between hydroxyl groups of hydroxypropyl cellulose and ethoxy units of Tween 80.
      PubDate: 2017-11-01
      DOI: 10.1134/s1061933x17060126
      Issue No: Vol. 79, No. 6 (2017)
  • Absorption of electromagnetic radiation by a nanoparticle in a
           nanocomposite: Going beyond the Maxwell-Garnett approximation
    • Authors: V. I. Roldughin; V. M. Rudoy
      Pages: 809 - 814
      Abstract: A model has been proposed for calculating the polarizability of a metal nanoparticle in a composite consisting of a dielectric matrix and monodisperse nanoparticles with more exact allowance for the influence of neighboring particles going beyond the Maxwell-Garnett approximation. The main attention has been focused on the imaginary component of the polarizability, which determines electromagnetic radiation absorption by a nanoparticle in the dipole approximation. It has been shown that the absorption may be noticeably enhanced or diminished depending on the incident radiation frequency.
      PubDate: 2017-11-01
      DOI: 10.1134/s1061933x17060138
      Issue No: Vol. 79, No. 6 (2017)
  • Contribution of the surface dipole moment and the contact
           potential-induced disjoining pressure to the stress balance at a
           three-phase contact
    • Authors: Radomir I. Slavchov; Iglika M. Dimitrova; Boryan P. Radoev
      Pages: 815 - 821
      Abstract: The contact between three insulators results in a set up of contact potentials related to the adsorbed dipole moment at each surface. The produced electric field applies force (disjoining pressure) on each interface. This disjoining pressure is a long-ranged force (1/distance2) which is proportional to the difference between the dielectric permittivities of the phases on the two sides of the interface and, for small angles, to the square of the contact angle. The contact potential leads to a logarithmic perturbation of the profile of the three-phase contact zone.
      PubDate: 2017-11-01
      DOI: 10.1134/s1061933x17060151
      Issue No: Vol. 79, No. 6 (2017)
  • The effect of simple electrolytes on coagulation of hydrosols of
           monodisperse negatively charged detonation nanodiamond
    • Authors: D. Yu. Sychev; A. N. Zhukov; E. V. Golikova; N. G. Sukhodolov
      Pages: 822 - 828
      Abstract: The influence of the concentration of potassium and barium chlorides on the aggregation stability of a hydrosol of monodisperse negatively charged detonation nanodiamond with particle sizes of 4−5 nm obtained by annealing of its agglomerates in air has been studied by turbidimetry. The experimental results have been discussed within the classical and generalized Derjaguin−Landau−Verwey−Overbeek theories. The analysis of the pair interaction potentials calculated for ultradispersed particles of detonation nanodiamond has led to the conclusion that the coagulation occurs by the barrier mechanism in the primary potential minimum. It has been assumed that the structural component of the interparticle interaction energy contributes to the total balance of the surface forces.
      PubDate: 2017-11-01
      DOI: 10.1134/s1061933x17060163
      Issue No: Vol. 79, No. 6 (2017)
  • Verification of a capillary model for the electroosmotic transport of a
           free solvent in ion-exchange membranes of different natures
    • Authors: I. V. Falina; O. A. Demina; V. I. Zabolotskii
      Pages: 829 - 837
      Abstract: It has been shown that the transport of a free solvent through ion-exchange membranes of different structural types in NaCl solutions can be calculated within the framework of the capillary model for electroosmotic transport on the basis of data on pore-radius distribution, exchange capacity, internal specific surface area, and concentration dependences of membrane electrical conductivity. The electrolyte-solution concentration range has been determined in which the convergence is observed between the data calculated in terms of the model and the results of the independent experimental determination of the numbers of water transport through the membranes. The fraction of through pores in the structure of an ion-exchange membrane has been found, and it has been shown that this fraction depends on the structural type of a polymer film alone.
      PubDate: 2017-11-01
      DOI: 10.1134/s1061933x17060084
      Issue No: Vol. 79, No. 6 (2017)
  • The effect of diffusion on nanoaerosol filtration through porous materials
           with allowance for desorption processes
    • Authors: A. L. Chernyakov
      Pages: 838 - 843
      Abstract: The effects of the finite residence time of aerosol particles in the bound state and their detachment due to thermal fluctuations on the filtration efficiency of porous and fibrous materials have been investigated with allowance for longitudinal diffusion in a flow. It has been shown that the desorption of particles affects the filtration efficiency even at times shorter than residence time τd of the particles in the bound state, while, at t ≫ τd, filtration stops. Allowance for the diffusion of aerosol particles in the flow leads to a decrease in the filtration efficiency as compared with the calculations performed without taking into account the longitudinal diffusion.
      PubDate: 2017-11-01
      DOI: 10.1134/s1061933x17060047
      Issue No: Vol. 79, No. 6 (2017)
  • Optical assessment of Dunaliella salina microalgae viability upon
           toxicological testing
    • Authors: D. S. Chumakov; A. A. Golubev; L. A. Dykman; N. G. Khlebtsov; V. A. Bogatyrev
      Pages: 844 - 848
      Abstract: A method has been developed for monitoring the dynamics of the number and viability of Dunaliella salina microalgae taking into account the spectral contribution from aggregates of metal particles tested as a toxic agent in a microplate assay system. The method is based on the in vivo determination of the chlorophyll content from the intensity of an absorption peak at 680 nm corrected for the nonselective extinction as calculated using the values of nearest local minima at 640 and 740 nm.
      PubDate: 2017-11-01
      DOI: 10.1134/s1061933x17060059
      Issue No: Vol. 79, No. 6 (2017)
  • A Jeffrey-fluid model of blood flow in tubes with stenosis
    • Authors: Bhupesh Dutt Sharma; Pramod Kumar Yadav; Anatoly Filippov
      Pages: 849 - 856
      Abstract: In this paper, we discuss the two-layered Jeffrey-fluid model with mild stenosis in narrow tubes. The blood flow in narrow arteries is treated as a two-fluid model with the suspension of erythrocytes, leukocytes, etc., as a Jeffrey fluid, which is a non-Newtonian fluid, in the core region and plasma, a Newtonian fluid, in the peripheral region. An analytical solution has been obtained for the velocity in the core and peripheral region, volume flow rate, resistance to flow, and wall-shear stress. The effect of Jeffrey-fluid parameters, like the height of stenosis, viscosity, etc., on volume flow rate, resistance to flow (impedance), and wall-shear stress has been discussed graphically. Through the present study, it is found that the wall-shear stress and resistance to flow increases with the increase in height of stenosis and decreases with the increase in the ratio of relaxation time. It is also found that the velocity decreases with an increase in stenosis height in both the core and the peripheral region. A previous result has been also verified.
      PubDate: 2017-11-01
      DOI: 10.1134/s1061933x1706014x
      Issue No: Vol. 79, No. 6 (2017)
  • Evolution of ultrafine gold seed nanoparticles with temperature and time
           and synthesis of plasmonic nanoshells
    • Authors: O. V. Dement’eva; M. E. Kartseva; V. M. Sukhov; V. M. Rudoy
      Pages: 605 - 610
      Abstract: Features of the evolution of ultrafine gold nanoparticles synthesized by the Duff method with temperature and time have been studied in relation to their use as seeds for the formation of plasmonic nanoshells. A quantitative relation has been revealed between the duration of preheating of such particles at a preset temperature and their size. The obtained relation indicates that Au nanoparticles grow mainly via the Ostwald ripening mechanism. Using anisotropic composite FeOOH/Ag particles as an example, it has been shown that the obtained information may be used to substantially decrease the duration of the synthesis of metal nanoshells on diverse cores.
      PubDate: 2017-09-01
      DOI: 10.1134/s1061933x17050040
      Issue No: Vol. 79, No. 5 (2017)
  • Extinction coefficients of gold nanoparticles and their dimers. Dependence
           of optical factor on particle size
    • Authors: A. I. Dolinnyi
      Pages: 611 - 620
      Abstract: The generalized Mie theory has been employed to calculate extinction coefficients κ for isolated gold nanoparticles of different sizes (4–80 nm) and their dimers (κ2) at the maximum of the short-wave plasmon resonance band. It has been found that the value of κ2 essentially depends on both interparticle distance s and particle sizes R. According to the character of variations in the κ2(s) dependence, three ranges of the distances are distinguished, i.e., large, intermediate, and small. In the first range, the κ2 values slightly differ from doubled κ values. Nevertheless a tendency toward an increase in κ2 is distinctly seen as the particles approach each other, and, within some range of s values and for particles with radii R < 15 nm, κ2 is higher than 2κ. For dimers of larger particles, κ2 < 2κ, with its value gradually decreasing with a reduction in the s value. The behavior changes when the particle sizes are of about 50 nm. In the range of small interparticle distances, κ2 values slightly vary with the distance between the particles somewhat decreasing or oscillating with a small amplitude about some mean value. In this range, as the sizes of the gold particles grow, the extinction coefficients of dimers increasingly deviate from the sum of the extinction coefficients of the particles composing the dimers. For 20–80 nm nanoparticles, the size-dependence plotted for the extinction efficiency of dimers in logarithmic coordinates within the range of small interparticle distances is described by a straight line, the slope of which (1.036 ± 0.039) appears to be somewhat smaller than the slope of a corresponding line for individual gold particles (1.274 ± 0.014). The ratio between κ2 and κ predetermines the character of variations in the optical factor as depending on the particle size and the interparticle distance and governs the behavior of the sol turbidity at the stage of nanoparticle dimerization.
      PubDate: 2017-09-01
      DOI: 10.1134/s1061933x17050052
      Issue No: Vol. 79, No. 5 (2017)
  • Complexes of 1-hexadecyl-4-aza-1-azoniabicyclo[2.2.2]octane bromide with
           transition metal nitrates. Micelle-forming, solubilizing, and adsorption
    • Authors: E. P. Zhiltsova; M. R. Ibatullina; S. S. Lukashenko; F. G. Valeeva; T. N. Pashirova; M. P. Kutyreva; L. Ya. Zakharova
      Pages: 621 - 629
      Abstract: Amphiphilic complexes of 1-hexadecyl-4-aza-1-azoniabicyclo[2.2.2]octane bromide (D-16) with nitrates of transition metals (La3+, Cu2+, Ni2+, and Co2+) have been synthesized and characterized. Absorption spectrophotometry in the UV, visible, and IR regions, as well as 1Н NMR spectroscopy, have been employed to study their spectral properties in water and organic media. Adsorption properties and micelleforming and solubilizing abilities of the amphiphilic complexes have been investigated in aqueous solutions by the methods of tensiometry and conductometry, as well as by solubilization of a water-insoluble dye (Orange OT). The values of the critical micelle concentration, adsorption parameters at a water/air interface, and solubilization capacity S of complex micelles have been determined. It has been shown that the most pronounced decrease in the critical micelle concentration (as large as two to three times) and differences in the adsorption characteristics and the S values as compared with those of ligand D-16 are observed for complexes of copper and lanthanum. The S values for these complexes are 1.3−2.5 and 3−6.5 times higher than those for D-16 and cetyltrimethylammonium bromide, respectively.
      PubDate: 2017-09-01
      DOI: 10.1134/s1061933x17050179
      Issue No: Vol. 79, No. 5 (2017)
  • Supramolecular microporous structures based on carbon nanotubes and
           coordinating cumene (C 9 H 12 ) molecules
    • Authors: A. V. Shkolin; A. A. Fomkin
      Pages: 701 - 706
      Abstract: A method has been proposed for the formation of self-organized ensembles of carbon nanotubes with the use of coordinating cumene molecules and the development of secondary porosity in the obtained structures. It has been shown that the fraction of nanotubes coordinated into an array grows with increasing molar ratio between cumene molecules and carbon nanotubes upon the synthesis of the supramolecular structures. The secondary porosity develops due to partial desorption of the coordinating molecules from the obtained structure. A supramolecular structure with a residual cumene content of 50 wt % possesses the best adsorption characteristics for the described system. Specific adsorption of nitrogen on the “carbon nanotubes–cumene (50 wt %)” supramolecular structure at 293 K is more than an order of magnitude higher than that on the initial nanotubes. The structure-related energy parameters of the experimentally obtained supramolecular systems have been determined by molecular dynamics methods. The calculation in terms of the theory of volume filling of micropores has shown that the secondary pores of the obtained structures can accumulate methane and hydrogen in amounts as large as 213 nm3/m3 and 4 wt %, respectively.
      PubDate: 2017-09-01
      DOI: 10.1134/s1061933x17050131
      Issue No: Vol. 79, No. 5 (2017)
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
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Fax: +00 44 (0)131 4513327
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