1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Thermal diffusion behavior of hard-sphere suspensions
Rent:
Rent this article for
USD
10.1063/1.2400860
/content/aip/journal/jcp/125/20/10.1063/1.2400860
http://aip.metastore.ingenta.com/content/aip/journal/jcp/125/20/10.1063/1.2400860

Figures

Image of FIG. 1.
FIG. 1.

Absorption spectra of colloidal suspensions in toluene. Solid line: 10% colloids in toluene with quinizarin. Dashed line: Toluene with quinizarin. Dotted line: 10% colloids in toluene without quinizarin. The concentration of quinizarin in these samples is the same.

Image of FIG. 2.
FIG. 2.

Concentration and temperature dependencies of of suspensions with toluene as the solvent.

Image of FIG. 3.
FIG. 3.

Temperature dependencies of for suspensions with toluene as the solvent. The solid line shows a linear fit of the data.

Image of FIG. 4.
FIG. 4.

(a) TEM image of the colloidal particles. (b) Size distribution of the colloidal particles.

Image of FIG. 5.
FIG. 5.

Experimental phase diagram. Regions of high turbidity (∎) and gel-like (◻) behavior are indicated by solid and open squares, respectively. The lines are drawn to guide the eye.

Image of FIG. 6.
FIG. 6.

(a) Translational diffusion coefficient in dependence of concentration at various temperatures. The solid lines are linear fits to the data. The dotted line is the theoretical concentration dependence of hard spheres: (Ref. 24). (b) Dependence of (∎) and (엯) on the temperature. The dashed lines are guides to the eye.

Image of FIG. 7.
FIG. 7.

Typical normalized TDFRS signals of colloidal suspensions with a volume fraction of 10% at different temperatures. The inset gives the signal for the measurement at as a function of time on a log scale.

Image of FIG. 8.
FIG. 8.

Concentration dependence of (a) the Soret coefficient and (b) the thermal diffusion coefficient . The temperatures are (∎), (엯), (▴), (▿), and (◆). The solid lines represent the fit of data according to Eqs. (16) and (15), respectively.

Image of FIG. 9.
FIG. 9.

Dependence of (a) the Soret coefficient and (b) the thermal diffusion coefficient as a function of temperature at various volume fractions.

Image of FIG. 10.
FIG. 10.

The temperature at which the sign change of the thermal diffusion coefficient occurs as a function of volume fraction. has been determined from a polynomial fit (∎) of and by a linear fit (◻) of vs volume fraction, respectively.

Image of FIG. 11.
FIG. 11.

Dependence of (a) and (b) of octadecane in toluene vs temperature. The solid lines are guides to the eye.

Image of FIG. 12.
FIG. 12.

(a) The experimental Soret coefficient (∎) and its single (◻) and interaction contribution (⊞) as function of temperature (b) shows the corresponding plot for the thermal diffusion coefficient. The volume fraction of the colloidal dispersion is . The solid lines are linear fits to the data.

Tables

Generic image for table
Table I.

Temperature dependence of characteristic parameters for colloid/toluene dispersions. The parameters were obtained by DLS using a volume fraction of colloids around 0.25%.

Loading

Article metrics loading...

/content/aip/journal/jcp/125/20/10.1063/1.2400860
2006-11-30
2014-04-23
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Thermal diffusion behavior of hard-sphere suspensions
http://aip.metastore.ingenta.com/content/aip/journal/jcp/125/20/10.1063/1.2400860
10.1063/1.2400860
SEARCH_EXPAND_ITEM