Measured specific rates of diffusion controlled reactions of solvated electron, e, with phenanthrene in 1-alkanols at 25掳C are analyzed for the Smoluchowski equation. The diffusion coefficients of es are calcu-lated from the Stokes-Einstein equation, where es is treated as a normal anion. ...
However, the diffusion coefficients are roughly ten times those predicted by the Stokes-Einstein equation—an effect apparently caused by the high surface ... BM Uzelac,EL Cussler - 《Journal of Colloid & Interface Science》 被引量: 26发表: 1970年 The Stokes-Einstein law by macroscopic arguments...
The connection between self-diffusion coefficient, D, and viscosity, eta, of liquids and especially in glass-forming melts is discussed in the framework of the phenomenology of irreversible thermodynamics. The limits of validity of the Stokes-Einstein equation are established and the experimentally obse...
thedifferentmoleculesaswellastheirpropershapes.Comparisonwithexperimentsforvariationsindiffusion coefficientsovertimerevealsverysimilartrends. Conclusions:WearguethatthestandardStokes-Einstein’sequationisinsufficienttounderstandthetemporal variationsindiffusionwhentryingtounderstandtheaggregationbehaviorofAb42proteins.Ourmodificat...
Based on the Debye model, Dr can also be determined by solving the rotational diffusion equation for the reorientation of the molecular dipole as Dr=1/[τℓℓ(ℓ+1)], where τℓ is the rotational relaxation time of the ℓ-th order Legendre polynomials14. τ1 and τ2 are the ...
Swelling-time curves were constructed to estimate the diffusion coefficients in the oil from the unsteady state diffusion equation. 4. Measurement procedure and analysis for oil swelling Approximately 2 cm3 of oil was placed in the column with a measuring scale, and the mass of the oil was ...
It is demonstrated that the theory predicts the Stokes-Einstein law relating the diffusion coefficient of a Brownian particle to its radius and the fluid shear viscosity. In addition, the correct long-time behavior (t) of the velocity autocorrelation function is obtained....
Molecular dynamics simulations of high density hard sphere fluids clearly show a breakdown of the Stokes-Einstein equation (SE). This result has been conjectured to be due to the presence of mobile particles, i.e., ones which have the propensity to "hop" distances that are integer multiples ...
Ionic liquidsFerroceneDiffusion coefficientCyclic voltammetryStokes-Einstein equationApparent capacitive characteristics of imidazolium-based room-temperature ionic liquids are justified by means of cyclic voltammetry and impedance techniques using the graphitic carbon paste electrode as a probe in virtue of its ...
Stokes–Einstein equationThe Stokes–Einstein relationship relating the self-diffusion coefficient with the size of a diffusing particle (a hydrodynamic radius) breaks down in case of small molecules. We present a novel method extending the range of validity of the Stokes–Einstein relationship by ...