Determination of the Mobility of Colloidal Particles by Microelectrophoresis

1962 ◽  
Vol 54 (8) ◽  
pp. 926-934 ◽  
Author(s):  
A. P. Black ◽  
Annie L. Smith
Keyword(s):  
Colloidal Particles

Combined determination of surface properties of nano-colloidal particles through ion selective electrodes with potentiometer

The Analyst ◽  
2013 ◽  
Vol 138 (4) ◽  
pp. 1122-1129 ◽  
Author(s):  
Xinmin Liu ◽  
Hang Li ◽  
Rui Li ◽  
Rui Tian ◽  
Chenyang Xu
Keyword(s):  
Surface Properties ◽  
Colloidal Particles ◽  
Ion Selective Electrodes

Determination of Clausius–Mossotti factors and surface capacitances for colloidal particles

2011 ◽  
Vol 98 (18) ◽  
pp. 181906 ◽  
Author(s):  
T. Honegger ◽  
K. Berton ◽  
E. Picard ◽  
D. Peyrade
Keyword(s):  
Colloidal Particles

Small-angle-scattering determination of the microstructure of porous silica precursor bodies

1990 ◽  
Vol 23 (6) ◽  
pp. 535-544 ◽  
Author(s):  
G. G. Long ◽  
S. Krueger ◽  
P. R. Jemian ◽  
D. R. Black ◽  
H. E. Burdette ◽  
...  
Keyword(s):  
Small Angle ◽  
Colloidal Silica ◽  
Colloidal Particles ◽  
Porous Silica ◽  
Scattering Data ◽  
Particle Size Distributions ◽  
Angle Scattering ◽  
Silica Precursor ◽  
Entropy Technique

Small-angle X-ray and small-angle neutron scattering measurements were carried out on a series of porous silica precursor (unsintered) bodies with different starting chemistries. The samples were prepared from mixtures containing 10 to 30 wt% colloidal silica sol and 90 to 70 wt% potassium silicate. Particle-size distributions were derived from the data using a maximum-entropy technique. Scattering data from the porous silica samples are especially suitable for such an analysis because the colloidal particles and clusters and aggregates of these particles are verified in detail to be spherical, and the scattering instrument use for this study covered the entire range of sizes in this material and was very well calibrated. It was found that the lower the amount of colloidal silica, the broader the size distribution of the silica aggregates.

Magnetic Colloidal Particles as Probes for the Determination of the Structure of Laponite Suspensions

Langmuir ◽  
2002 ◽  
Vol 18 (5) ◽  
pp. 1466-1473 ◽  
Author(s):  
Fabrice Cousin ◽  
Valérie Cabuil ◽  
Pierre Levitz
Keyword(s):  
Colloidal Particles

scholarly journals Numerical evidence for thermally induced monopoles

2017 ◽  
Vol 114 (19) ◽  
pp. 4911-4914 ◽  
Author(s):  
Peter Wirnsberger ◽  
Domagoj Fijan ◽  
Roger A. Lightwood ◽  
Anđela Šarić ◽  
Christoph Dellago ◽  
...  
Keyword(s):  
Applied Field ◽  
Colloidal Particles ◽  
Nonequilibrium Thermodynamics ◽  
Magnetic Charge ◽  
Magnetic Monopoles ◽  
Thermally Induced ◽  
Numerical Evidence ◽  
Theoretical Predictions ◽  
Oppositely Charged

Electric charges are conserved. The same would be expected to hold for magnetic charges, yet magnetic monopoles have never been observed. It is therefore surprising that the laws of nonequilibrium thermodynamics, combined with Maxwell’s equations, suggest that colloidal particles heated or cooled in certain polar or paramagnetic solvents may behave as if they carry an electric/magnetic charge. Here, we present numerical simulations that show that the field distribution around a pair of such heated/cooled colloidal particles agrees quantitatively with the theoretical predictions for a pair of oppositely charged electric or magnetic monopoles. However, in other respects, the nonequilibrium colloidal particles do not behave as monopoles: They cannot be moved by a homogeneous applied field. The numerical evidence for the monopole-like fields around heated/cooled colloidal particles is crucial because the experimental and numerical determination of forces between such colloidal particles would be complicated by the presence of other effects, such as thermophoresis.

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