NIST Center for Neutron Research

The NIST-SANS/Boulder Couette Shear Cell (BSC)

empty shearexit side of shear cell

The NIST-SANS Couette-type shear cell consists of an inner quartz cylindrical stator (O.D. = 59mm for 1mm gap; 60mm for .5mm gap) and an outer quartz cylindrical rotor (I.D. = 61mm). Sample volumes required are approximately 11 ml to fill the .5 mm gap cell, and about 14 ml to fill the 1 mm gap cell.

The shear cell is capable of producing steady shear rates from 0.00001 revolution per second (rps) to 10 rps, with conversion factors being 389 Hz/rps for the .5 mm gap and 191 Hz/rps for the 1 mm gap cell. It is also capable of oscillatory shear (by specifying shear rate, acceleration and displacement (strain)) and time-slicing of reversible shear-induced behaviors on the order of tens of milliseconds or longer.

The empty shear cell with the stator raised (L). A 3/4" hole in the Invar interior to the quartz cup stator accomodates a 1/2" diameter incident beam on the sample. The exit side (R) of the shear cell has a larger opening in the stator to accomodate scattering from samples.

Recent publications that used the Couette Shear Cell:

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Last modified 29-August-2012 by website owner: NCNR (attn: Jeff Krzywon)