Now showing items 21-40 of 69

    • Effect of excess charge carriers and fluid medium on the magnitude and sign of the Casimir-Lifshitz torque 

      Thiyam, Priyadarshini; Parashar, Prachi; Shajesh, Kuloth Vayalombron; Malyi, Oleksandr; Boström, Mathias; Milton, K. A.; Brevik, Iver Håkon; Forsman, Jan; Persson, Clas (Journal article; Peer reviewed, 2019)
      Last year, we reported a perturbative theory of the Casimir-Lifshitz torque between planar biaxially anisotropic materials in the retarded limit [Thiyam et al., Phys. Rev. Lett. 120, 131601 (2018)], which is applied here ...
    • The effect of thermal radiation on singularities in the dark universe 

      Brevik, Iver Håkon; Timoshkin, A. V.; Paul, Tanmoy (Peer reviewed; Journal article, 2021)
      Cosmological models with an inhomogeneous viscous dark fluid, coupled with dark matter in the Friedmann–Robertson–Walker (FRW) flat universe, are considered. The influence of thermal effects caused by Hawking radiation on ...
    • Effective polarisability models 

      Fiedler, Johannes; Thiyam, Priyadarshini; Kurumbail, Anurag; Burger, Friedrich A.; Walter, Michael; Persson, Clas; Brevik, Iver Håkon; Parsons, Drew F.; Boström, Anders Mathias; Buhmann, Stefan Yoshi (Journal article; Peer reviewed, 2017)
      Theories for the effective polarizability of a small particle in a medium are presented using different levels of approximation: we consider the virtual cavity, real cavity, and the hard-sphere models as well as a continuous ...
    • Effects of Low Concentration in Aqueous Solutions within the Fractal Approach 

      Brevik, Iver Håkon; Shapovalov, A. V. (Peer reviewed; Journal article, 2022)
      The concept of the fractal approach is discussed in relation to the description of some properties of dilute aqueous solutions and suspensions of low concentrations. The role of weakly interacting objects in the form of ...
    • Electric current and heat production by a neutral carrier: An effect of the axion 

      Brevik, Iver Håkon; Chaichian, Masud (Peer reviewed; Journal article, 2022)
      A general axion-electrodynamic formalism is presented on the phenomenological level when the environment is dielectric (permittivity and permeability assumed to be constants). Thereafter, a strong and uniform magnetic field ...
    • Equivalence of Electromagnetic Fluctuation and Nuclear (Yukawa) Forces: the π<inf>0</inf> Meson, its Mass and Lifetime 

      Ninham, Barry W.; Brevik, Iver Håkon; Boström, Mathias (Peer reviewed; Journal article, 2023)
      It is shown how Maxwell’s equations for the electromagnetic field with Planck quantisation of allowed modes appears to provide a semiclassical account of nuclear interactions. The mesons emerge as plasmons, collective ...
    • Evaluation of Gas and Oil Dispersion during Subsea Blowouts 

      Bakli, Mikkel (Master thesis, 2014)
      The global demand for hydrocarbons is high and is also believed to be high in the future. Much of today s oil and gas exploration is carried out offshore and consequently, there is a risk if oil and gas blowouts at the ...
    • Fabrication of Co3O4 from cobalt/2,6-napthalenedicarboxylic supercapacitor application 

      Imaduddin, I. S,; Majid, S. R.; Aziz, S. B.; Brevik, Iver Håkon; Yusuf, S. N. F.; Brza, M. A.; Saeed, S. R.; Kadir, M. F. Z. A. (Peer reviewed; Journal article, 2021)
      In this study, cobalt-based metal-organic framework (MOF) powder was prepared via the solvothermal method using 2,6-naphthalenedicarboxylic acid (NDC) as the organic linker and N,N-dimethylformamide (DMF) as the solvent. ...
    • Finite-size-dependent dispersion potentials between atoms and ions dissolved in water 

      Thiyam, Priyadarshini; Boström, Mathias; Persson, Clas; Parsons, Drew F.; Brevik, Iver Håkon; Sernelius, Bo. E. (Journal article; Peer reviewed, 2014)
      A non-expanded theory is used for dispersion potentials between atoms and ions dissolved in a medium. The first-order dispersion interaction between two atoms in an excited state must account for the fact that the two atoms ...
    • Finite-temperature Casimir effect in Randall-Sundrum models 

      Rypestøl, Marianne; Brevik, Iver Håkon (Journal article; Peer reviewed, 2010)
      The finite-temperature Casimir effect for a scalar field in the bulk region of two Randall–Sundrum models, RSI and RSII, is studied. We calculate the Casimir energy and the Casimir force for two parallel plates with ...
    • Fluid sensitive nanoscale switching with quantum levitation controlled by a-Sn/b-Sn phase transition 

      Boström, Anders Mathias; Dou, Maofeng; Malyi, Oleksandr; Parashar, Prachi; Parsons, Drew F.; Brevik, Iver Håkon; Persson, Clas (Journal article, 2018)
      We analyze the Lifshitz pressure between silica and tin separated by a liquid mixture of bromobenzene and chlorobenzene. We show that the phase transition from semimetallic α−Sn to metallic β−Sn can switch Lifshitz forces ...
    • Full-Spectrum High-Resolution Modeling of the Dielectric Function of Water 

      Fiedler, Johannes; Boström, Mathias; Persson, Clas; Brevik, Iver Håkon; Corkery, R.; Buhmann, S. Y.; Parsons, D. F. (Journal article, 2020)
      In view of the vital role of water, exact knowledge of its dielectric function over a large frequency range is important. We report on currently available measurements of the dielectric function of water at room temperature ...
    • General bulk-viscous solutions and estimates of bulk viscosity in the cosmic fluid 

      Normann, Ben David; Brevik, Iver Håkon (Journal article; Peer reviewed, 2016)
      We derive a general formalism for bulk viscous solutions of the energy-conservation equation for ρ(a,ζ) ρ(a,ζ) , both for a single-component and a multicomponent fluid in the Friedmann universe. For our purposes, these ...
    • Holographic cosmology with two coupled fluids in the presence of viscosity 

      Brevik, Iver Håkon; Timoshkin, A. V. (Peer reviewed; Journal article, 2021)
      We explore the cosmological models of the late-time universe based on the holographic principle, taking into account the properties of the viscosity of the dark fluid. We use the mathematical formalism of generalized ...
    • Ice particles sink below the water surface due to a balance of salt, van der Waals and buoyancy forces 

      Thiyam, Priyadarshini; Fiedler, Johannes; Buhmann, Stefan Yoshi; Persson, Clas; Brevik, Iver Håkon; Boström, Mathias; Parsons, Drew F. (Journal article; Peer reviewed, 2018)
      According to the classical Archimedes’ principle, ice floats in water and has a fraction of its volume above the water surface. However, for very small ice particles, other competing forces such as van der Waals forces due ...
    • Inflation in terms of a viscous van der Waals coupled fluid 

      Brevik, Iver Håkon; Obukhov, V. V.; Timoshkin, A. V. (Journal article; Peer reviewed, 2018)
      We propose to describe the acceleration of the universe by introducing a model of two coupled fluids. We focus on the accelerated expansion at the early stages. The inflationary expansion is described in terms of a van der ...
    • Lifshitz interaction can promote ice growth at water-silica interfaces 

      Boström, Mathias; Malyi, Oleksandr; Parashar, Prachi; Shajesh, Kuloth Vayalombron; Thiyam, Priyadarshini; Milton, Kimball A.; Persson, Clas; Parsons, Drew F.; Brevik, Iver Håkon (Journal article; Peer reviewed, 2017)
      At air-water interfaces, the Lifshitz interaction by itself does not promote ice growth. On the contrary, we find that the Lifshitz force promotes the growth of an ice film, up to 1–8 nm thickness, near silica-water ...
    • Metal complex as a novel approach to enhance the amorphous phase and improve the EDLC performance of plasticized proton conducting chitosan-based polymer electrolyte 

      Asnawi, A. S. F. M.; Aziz, S. B.; Nofal, M. M.; Yusof, Y. M.; Brevik, Iver Håkon; Hamsan, M. H.; Brza, M. A.; Abdulwahid, R. T.; Kadir, M. F. Z. (Peer reviewed; Journal article, 2020)
      Abstract This work indicates that glycerolized chitosan-NH4F polymer electrolytes incorporated with zinc metal complexes are crucial for EDLC application. The ionic conductivity of the plasticized system was improved ...
    • Minkowski momentum resulting from a vacuum-medium mapping procedure, and a brief review of Minkowski momentum experiments 

      Brevik, Iver Håkon (Journal article; Peer reviewed, 2017)
      A discussion is given on the interpretation and physical importance of the Minkowski momentum in macroscopic electrodynamics (essential for the Abraham–Minkowski problem). We focus on the following two facets: (1) Adopting ...
    • A new version of the Hermite-Hadamard inequality for Riemann-Liouville fractional integrals 

      Mohammed, P. O.; Brevik, Iver Håkon (Peer reviewed; Journal article, 2020)
      Integral inequalities play a critical role in both theoretical and applied mathematics fields. It is clear that inequalities aim to develop different mathematical methods. Thus, the present days need to seek accurate ...