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Dr. Christopher and collegues at NIST developed the MEMS mRheometer to address a gap in microrheology techniques.  The mRheometer can measure shear rheology of soft matter with confinement and deformation of 10 microns.  The current device uses high speed imaging to monitor deformation and is able to extract viscoelastic moduli from approximately 0.5 to 500 Hz.

The proof of concept device is now ready to be improved upon to increase accuracy and reliability.  Improvement of measurment sensors, platform design, and system integration will allow this tool to be used on a wide array of materials that would benefit the mRheometer advantages.

We hope to use the tool to explore the effects of confinement on an array of biopolymers, hydrogels, and other materials.