Blar i NTNU Open på forfatter "Brevik, Iver Håkon"

Anisotropic contribution to the van der Waals and the CasimirPolder energies for CO2 and CH4 molecules near surfaces and thin film
Thiyam, Priyadarshini; Parashar, Prachi; Shajesh, K. V.; Persson, Clas; Schaden, Martin; Brevik, Iver Håkon; Parsons, Drew F.; Milton, Kimball A.; Malyi, Oleksandr; Boström, Mathias (Journal article; Peer reviewed, 2015)In order to understand why carbon dioxide ( CO 2 ) and methane ( CH 4 ) molecules interact differently with surfaces, we investigate the CasimirPolder energy of a linearly polarizable CO 2 molecule and an isotropically ... 
Casimir energies for isorefractive or diaphanous balls
Milton, Kimball A.; Brevik, Iver Håkon (Journal article; Peer reviewed, 2018)It is known that the Casimir selfenergy of a homogeneous dielectric ball is divergent, although a finite selfenergy can be extracted through second order in the deviation of the permittivity from the vacuum value. The ... 
Casimir energies of selfsimilar plate configurations
Shajesh, Kuloth Vayalombron; Brevik, Iver Håkon; CaveroPelaez, Ines; Parashar, Prachi (Journal article; Peer reviewed, 2016)We construct various selfsimilar configurations using parallel δfunction plates and show that it is possible to evaluate the Casimir interaction energy of these configurations using the idea of selfsimilarity alone. We ... 
Casimir force and its relation to surface tension
Høye, Johan Skule; Brevik, Iver Håkon (Journal article; Peer reviewed, 2017)From energy considerations there is reason to expect that the work done by Casimir forces during a slow displacement of the parallel plates reflects the free energy of the surface tension of the adjacent surfaces. We show ... 
Casimir force between a halfspace and a plate of finite thickness
Høye, Johan Skule; Brevik, Iver Håkon (Journal article; Peer reviewed, 2016)Zerofrequency Casimir theory is analyzed from different viewpoints, with the aim of obtaining further insight into the delicate Drudeplasma issue that turns up when one considers thermal corrections to the Casimir force. ... 
Casimir forces in a plasma: possible connections to Yukawa potentials
Ninham, Barry W.; Boström, Mathias; Persson, Clas; Brevik, Iver Håkon; Buhmann, Stefan Yoshi; Sernelius, Bo. E. (Journal article; Peer reviewed, 2014)We present theoretical and numerical results for the screened Casimir effect between perfect metal surfaces in a plasma. We show how the Casimir effect in an electronpositron plasma can provide an important contribution ... 
Casimir friction between dense polarizable media
Høye, Johan Skule; Brevik, Iver Håkon (Journal article; Peer reviewed, 2013)The present paper—a continuation of our recent series of papers on Casimir friction for a pair of particles at low relative particle velocity—extends the analysis, so as to include dense media. The situation becomes, in ... 
Casimir friction between dense polarizable media
Høye, Johan Skule; Brevik, Iver Håkon (Peer reviewed; Journal article, 2013)The present paper—a continuation of our recent series of papers on Casimir friction for a pair of particles at low relative particle velocity—extends the analysis, so as to include dense media. The situation becomes, in ... 
Casimir quantum levitation tuned by means of material properties and geometries
Dou, Maofeng; Lui, F; Boström, Mathias; Brevik, Iver Håkon; Persson, Clas (Journal article; Peer reviewed, 2014)The Casimir force between two surfaces is attractive in most cases. Although stable suspension of nanoobjects has been achieved, the sophisticated geometries make them difficult to be merged with wellestablished thin ... 
Distancedependent sign reversal in the CasimirLifshitz torque
Thiyam, Priyadarshini; Parashar, Prachi; Shajesh, Kuloth Vayalombron; Malyi, Oleksandr; Boström, Mathias; Milton, Kimball A.; Brevik, Iver Håkon; Persson, Clas (Journal article; Peer reviewed, 2018)The CasimirLifshitz torque between two biaxially polarizable anisotropic planar slabs is shown to exhibit a nontrivial sign reversal in its rotational sense. The critical distance $a_c$ between the slabs that marks this ... 
Effect of excess charge carriers and fluid medium on the magnitude and sign of the CasimirLifshitz 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 CasimirLifshitz torque between planar biaxially anisotropic materials in the retarded limit [Thiyam et al., Phys. Rev. Lett. 120, 131601 (2018)], which is applied here ... 
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 hardsphere models as well as a continuous ... 
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 ... 
Finitesizedependent 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 nonexpanded theory is used for dispersion potentials between atoms and ions dissolved in a medium. The firstorder dispersion interaction between two atoms in an excited state must account for the fact that the two atoms ... 
Finitetemperature Casimir effect in RandallSundrum models
Rypestøl, Marianne; Brevik, Iver Håkon (Journal article; Peer reviewed, 2010)The finitetemperature 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 aSn/bSn 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 ... 
General bulkviscous 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 energyconservation equation for ρ(a,ζ) ρ(a,ζ) , both for a singlecomponent and a multicomponent fluid in the Friedmann universe. For our purposes, these ... 
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 watersilica 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 airwater 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 silicawater ...