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Rheo–small-angle neutron scattering at the National Institute of Standards and Technology Center for Neutron Research
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Image of FIG. 1.
FIG. 1.

Full drawing of the constant stress rheometer in its protective aluminum housing with the slit package defining the beam size. The arrow represents the incoming beam path.

Image of FIG. 2.
FIG. 2.

Cup assembly package allowing for fast and precise alignment. Cup can be removed for cleaning and replaced without loss of alignment. The various parts of interest are annotated directly on the figure.

Image of FIG. 3.
FIG. 3.

Rheometer installed on the NG3 SANS beam line at the NCNR. The arrow indicates the neutron path.

Image of FIG. 4.
FIG. 4.

1D scattering intensity curve from Ti and Quartz cup and bob (error bars on the points are for a one sigma uncertainty).

Image of FIG. 5.
FIG. 5.

2D scattering intensity from Ti (a) and Quartz (b) cup and bob showing a slightly anisotropic intensity distribution at really small angles for the Ti cup and bob.

Image of FIG. 6.
FIG. 6.

Anisotropic calcium carbonate particles dispersed into polyethylene glycol solution. The rheology data exhibit a discontinuous shear thickening transition while the scattering curves (2D images across the top) and the particle alignment factor calculated from them (right hand axis) show no change in particle orientation through the transition. Data were collected in the relevant radial geometry.

Image of FIG. 7.
FIG. 7.

Gel modulus as a function of strain deformation for a fibrin clot formed with a fibrinogen concentration of 1 mg/mL and corresponding scattering patterns taken in the relevant radial geometry.


Generic image for table
Table I.

Principle operating parameters for the Rheo-SANS device.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Rheo–small-angle neutron scattering at the National Institute of Standards and Technology Center for Neutron Research