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Effect of particle shape and charge on bulk rheology of nanoparticle suspensions
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10.1063/1.3419071
/content/aip/journal/jcp/132/18/10.1063/1.3419071
http://aip.metastore.ingenta.com/content/aip/journal/jcp/132/18/10.1063/1.3419071

Figures

Image of FIG. 1.
FIG. 1.

Snapshots of individual particles for (a) jacks consisting of three long and wide arms, (b) rods that are long and wide, (c) plates with each side long, and (d) spheres with diameters of .

Image of FIG. 2.
FIG. 2.

Snapshots of the uncharged particle suspensions for (a) jacks, (b) rods, (c) plates, and (d) spheres at . Solvent particles are not shown, and solid particles are colored individually for visual clarity.

Image of FIG. 3.
FIG. 3.

Snapshots of charged particle suspensions for the low salt concentration for (a) jacks, (b) rods, (c) plates, and (d) spheres at . Solvent particles are not shown, and solid particles are colored individually for visual clarity.

Image of FIG. 4.
FIG. 4.

Radial distribution function for (solid line) and (dashed line) systems for (a) jacks, (b) rods, (c) plates, and (d) spheres.

Image of FIG. 5.
FIG. 5.

Mean square displacement for (solid line) and (dashed line) charged systems. The colors correspond to jacks (black), rods (red), plates (green), and spheres (blue).

Image of FIG. 6.
FIG. 6.

Diffusion constant as a function of the inverse Debye screening length for the suspension of jacks (black circles) and spheres (red squares). Results for the jacks are multiplied by ten for clarity.

Image of FIG. 7.
FIG. 7.

Simulation snapshots for the charged low ionic strength systems at under their highest simulated shear rates: (a) for jacks, (b) for rods, (c) for plates, and (d) for spheres. In each case, the system is subject to simple shear with flow in the horizontal direction and the gradient in the vertical direction. Solvent particles are not shown, and solid particles are colored individually for visual clarity.

Image of FIG. 8.
FIG. 8.

Log plot of momentum transferred for suspensions of various nanoparticle shapes. The charged suspensions have a dielectric solvent with an inverse Debye screening length of (solid lines, filled symbols) or (dashed lines, open symbols) for jacks (black), rods (red), plates (green), and spheres (blue).

Image of FIG. 9.
FIG. 9.

Orientational order parameter as a function of applied shear rate for charged rods with (black) and (red) and for charged plates with (green) and (blue).

Tables

Generic image for table
Table I.

Simulation box length and number of solvent particles and number of nanoparticles for the four nanoparticle shapes.

Generic image for table
Table II.

Diffusion constant in units of for each of the four nanoparticle shapes.

Generic image for table
Table III.

Zero shear rate viscosity , where is the viscosity of the neat solvent along with results from path integral calculations of the uncharged systems. The value in parenthesis gives the uncertainty in the last displayed digit.

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/content/aip/journal/jcp/132/18/10.1063/1.3419071
2010-05-12
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Effect of particle shape and charge on bulk rheology of nanoparticle suspensions
http://aip.metastore.ingenta.com/content/aip/journal/jcp/132/18/10.1063/1.3419071
10.1063/1.3419071
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