A multi-axis confocal rheoscope for studying shear flow of structured fluids

Neil Y.C. Lin; Jonathan H. McCoy; Xiang Cheng; Brian Leahy; Jacob N. Israelachvili; Itai Cohen

doi:10.1063/1.4868688

A multi-axis confocal rheoscope for studying shear flow of structured fluids

Neil Y.C. Lin, Jonathan H. McCoy, Xiang Cheng, Brian Leahy, Jacob N. Israelachvili, Itai Cohen

Chemical Engineering and Materials Science

Research output: Contribution to journal › Article › peer-review

38 Scopus citations

Abstract

We present a new design for a confocal rheoscope that enables uniform uniaxial or biaxial shear. The design consists of two precisely positioned parallel plates with a gap that can be adjusted down to 2 ±0.1 μm, allowing for the exploration of confinement effects. By using our shear cell in conjunction with a biaxial force measurement device and a high-speed confocal microscope, we are able to measure the real-time biaxial stress while simultaneously imaging the material three-dimensional structure. We illustrate the importance of the instrument capabilities by discussing the applications of this instrument in current and future research topics in colloidal suspensions.

Original language	English (US)
Article number	033905
Journal	Review of Scientific Instruments
Volume	85
Issue number	3
DOIs	https://doi.org/10.1063/1.4868688
State	Published - Mar 2014

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A multi-axis confocal rheoscope for studying shear flow of structured fluids

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