A method for obtaining multicomponent diffusion coefficients directly from Rayleigh and Gouy fringe position data

1988 ◽  
Vol 92 (14) ◽  
pp. 4222-4226 ◽  
Author(s):  
Donald G. Miller
Keyword(s):  
Diffusion Coefficients ◽  
Multicomponent Diffusion ◽  
Position Data ◽  
Multicomponent Diffusion Coefficients

Multicomponent diffusion coefficients from microfluidics using Raman microspectroscopy

Lab on a Chip ◽  
2017 ◽  
Vol 17 (16) ◽  
pp. 2768-2776 ◽  
Author(s):  
Christine Peters ◽  
Ludger Wolff ◽  
Sandra Haase ◽  
Julia Thien ◽  
Thorsten Brands ◽  
...  
Keyword(s):  
Diffusion Coefficients ◽  
Multicomponent Diffusion ◽  
High Accuracy ◽  
Raman Microspectroscopy ◽  
Multicomponent Diffusion Coefficients ◽  
Short Time

Microfluidic measurement of multicomponent diffusion coefficients using minimal number of experiments with high accuracy in short time.

An eigenvalue method for determination of multicomponent diffusion coefficients. Application to NaOH + NaCl + H2O mixtures

1985 ◽  
Vol 63 (2) ◽  
pp. 476-482 ◽  
Author(s):  
Derek G. Leaist ◽  
Robert A. Noulty
Keyword(s):  
Diffusion Coefficients ◽  
Binary Data ◽  
Pure Water ◽  
Multicomponent Diffusion ◽  
Diagonal Form ◽  
Inverse Transformation ◽  
Linear Combinations ◽  
Eigenvalue Method ◽  
Multicomponent Diffusion Coefficients

A general method for the determination of multicomponent diffusion coefficients is developed using the algebraic technique of matrix diagonalization. When linear combinations of measurements from several multicomponent diffusion experiments performed with different initial concentration gradients (but with the same final composition) are analyzed as simple binary data, particular combinations may be found that transform the multicomponent diffusion coefficient matrix D to diagonal form and thus yield time-invariant, pseudo-binary diffusion coefficients: the eigenvalues of D. Since the matrix that diagonalizes D is given by the coefficients used to form the linear combinations, D is easily recovered by the inverse transformation. The advantages of the eigenvalue method are briefly discussed. For testing purposes, ternary diffusion coefficients are determined from conductance measurements for dilute aqueous NaOH + NaCl mixtures. Diffusion of NaOH in aqueous NaCl is significantly more rapid than in pure water, and large coupled flows of NaCl are observed. The results are in close agreement with behavior predicted by Onsager–Fuoss theory.

scholarly journals Multicomponent diffusion coefficients in aqueous lanthanide chloride systems.

1983 ◽  
Vol 16 (4) ◽  
pp. 257-262
Author(s):  
MASATAKA TANIGAKI ◽  
SHIZUHARU MACHIDA ◽  
MAKOTO HARADA ◽  
WATARU EGUCHI
Keyword(s):  
Diffusion Coefficients ◽  
Multicomponent Diffusion ◽  
Lanthanide Chloride ◽  
Multicomponent Diffusion Coefficients
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