Simulated microgravity in the ring-sheared drop

Patrick M. McMackin; Shannon R. Griffin; Frank P. Riley; Shreyash Gulati; Nicholas E. Debono; Aditya Raghunandan; Juan M. Lopez; Amir H. Hirsa

doi:10.1038/s41526-019-0092-1

Simulated microgravity in the ring-sheared drop

Patrick M. McMackin, Shannon R. Griffin, Frank P. Riley, Shreyash Gulati, Nicholas E. Debono, Aditya Raghunandan, Juan M. Lopez, Amir H. Hirsa

Mathematical and Statistical Sciences, School of (SoMSS)

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

5 Scopus citations

Abstract

The ring-sheared drop is a module for the International Space Station to study sheared fluid interfaces and their influence on amyloid fibril formation. A 2.54-cm diameter drop is constrained by a stationary sharp-edged ring at some latitude and sheared by the rotation of another ring in the other hemisphere. Shearing motion is conveyed primarily by the action of surface shear viscosity. Here, we simulate microgravity in the laboratory using a density-matched liquid surrounding the drop. Upon shearing, the drop’s deformation away from spherical is found to be a result of viscous and inertial forces balanced against the capillary force. We also present evidence that the deformation increases with increasing surface shear viscosity.

Original language	English (US)
Article number	2
Journal	npj Microgravity
Volume	6
Issue number	1
DOIs	https://doi.org/10.1038/s41526-019-0092-1
State	Published - Dec 1 2020

ASJC Scopus subject areas

Medicine (miscellaneous)
Materials Science (miscellaneous)
Biochemistry, Genetics and Molecular Biology (miscellaneous)
Agricultural and Biological Sciences (miscellaneous)
Physics and Astronomy (miscellaneous)
Space and Planetary Science

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10.1038/s41526-019-0092-1

Cite this

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title = "Simulated microgravity in the ring-sheared drop",

abstract = "The ring-sheared drop is a module for the International Space Station to study sheared fluid interfaces and their influence on amyloid fibril formation. A 2.54-cm diameter drop is constrained by a stationary sharp-edged ring at some latitude and sheared by the rotation of another ring in the other hemisphere. Shearing motion is conveyed primarily by the action of surface shear viscosity. Here, we simulate microgravity in the laboratory using a density-matched liquid surrounding the drop. Upon shearing, the drop{\textquoteright}s deformation away from spherical is found to be a result of viscous and inertial forces balanced against the capillary force. We also present evidence that the deformation increases with increasing surface shear viscosity.",

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AU - McMackin, Patrick M.

AU - Griffin, Shannon R.

AU - Riley, Frank P.

AU - Gulati, Shreyash

AU - Debono, Nicholas E.

AU - Raghunandan, Aditya

AU - Lopez, Juan M.

AU - Hirsa, Amir H.

PY - 2020/12/1

Y1 - 2020/12/1

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AB - The ring-sheared drop is a module for the International Space Station to study sheared fluid interfaces and their influence on amyloid fibril formation. A 2.54-cm diameter drop is constrained by a stationary sharp-edged ring at some latitude and sheared by the rotation of another ring in the other hemisphere. Shearing motion is conveyed primarily by the action of surface shear viscosity. Here, we simulate microgravity in the laboratory using a density-matched liquid surrounding the drop. Upon shearing, the drop’s deformation away from spherical is found to be a result of viscous and inertial forces balanced against the capillary force. We also present evidence that the deformation increases with increasing surface shear viscosity.

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Simulated microgravity in the ring-sheared drop

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