Browsing by Subject "Fluids and plasma physics"
Now showing items 113 of 13

Constantmagneticfield effect in Neel relaxation of singledomain ferromagnetic particles
(1995)The relaxation behavior of an assembly of noninteracting singledomain ferromagnetic particles in the presence of a constant magnetic field is studied by solving the corresponding FokkerPlanck equation. The analysis is ... 
Critical ﬁeld behavior and antiband instability under controlled surface electromigration on Si(111)
(2011)In this study we investigate step bunching and antiband surface instabilities on Si(111). We experimentally study the effects of a controlled electromigration field on the onset of antibands. We analyze the initial stage ... 
Dynamics of ZnO laser produced plasma in high pressure argon
(2011)Pulsed laser deposition of ZnO in high pressure gas offers a route for the catalystfree preparation of ZnO nanorods less than 10 nm in diameter. This paper describes the results of some experiments to investigate the laser ... 
Effectiveeigenvalue approach to the nonlinear Langevin equation for the Brownian motion in a tilted periodic potential. II. Application to the ringlaser gyroscope
(American Physical Society, 1993)The effectiveeigenvalue method is used to obtain an approximate solution for the mean beatsignal spectrum for the ringlaser gyroscope in the presence of quantum noise. The accuracy of the effectiveeigenvalue method is ... 
Effectiveeigenvalue approach to the nonlinear Langevin equation for the Brownian motion in a tilted periodic potential: Application to the Josephson tunneling junction
(American Physical Society, 1993)The effectiveeigenvalue method is used for a calculation of the impedance of the Josephson tunneling junction for an externally applied smallsignal alternating current in the presence of noise. The accuracy of the method ... 
Exact analytic formula for the correlation time of a singledomain ferromagnetic particle
(American Physical Society, 1994)Exact solutions for the longitudinal relaxation time T and the complex susceptibility ?(?) of a thermally agitated singledomain ferromagnetic particle are presented for the simple uniaxial potential of the crystalline ... 
An experimental realisation of the WeairePhelan structure in monodisperse liquid foam
(2012)The WeairePhelan (WP) structure is the lowest energy structure known of an ideal monodisperse foam in the dry limit. To date, it has not been realized in the laboratory. Instead Lord Kelvin's 1887 structure, which it ... 
The importance of repulsive potential barriers for the dispersion of graphene using surfactants
(2010)We have dispersed graphene in water, stabilized by a range of 12 ionic and nonionic surfactants. In all cases, the degree of exfoliation, as characterized by flake length and thickness, was similar. The dispersed flakes ... 
Multidiagnostic analysis of ultrafast laser ablation of metals with pulse pair
(2010)Copper targets are irradiated in the ablation regime by pairs of equal, timedelayed collinear laser pulses separated on a timescale going from 2 ps to 2 ns. The ablation plume is characterized by ion probe diagnostic, ... 
Ordered polyhedral foams in tubes with circular, triangular and square crosssection
(2011)Soap bubbles of equal volume readily crystallize as ordered polyhedral foam structures when introduced into tubes whose width is of the same order as the bubble diameter. In the past a large number of these structures have ... 
Phyllotactic Description of Hard Sphere Packing in Cylindrical Channels
(2011)We develop a simple analytical theory that relates dense sphere packings in a cylinder to corresponding disk packings on its surface. It applies for ratios R=D/d (where d and D are the diameters of the hard spheres and the ... 
Rotational Brownian motion and dielectric relaxation of polar molecules subjected to a constant bias field: Exact solution
(American Physical Society, 1994)The longitudinal and transverse components of the complex dielectric susceptibility tensor and dielectric correlation times are calculated exactly for a system of noninteracting polar molecules placed in a constant external ... 
Zpinch Discharge in Laser Produced Plasma
(2010)Zpinch effects in a laser produced aluminium plasma were investigated with a relatively low current fast coaxial electrical discharge. The ion flux in the laser produced plasma (LPP) was monitored with a Langmuir ion ...