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

Research output: Contribution to journalArticle

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 languageEnglish (US)
Article number2
Journalnpj Microgravity
Volume6
Issue number1
DOIs
StatePublished - Dec 1 2020

Fingerprint

microgravity
Weightlessness
Microgravity
Viscosity
shear stress
viscosity
shearing
Shear viscosity
rings
amyloid
Shearing
Amyloid
shear
International Space Station
hemispheres
inertia
liquid
liquids
fluid
Space stations

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

Cite this

McMackin, P. M., Griffin, S. R., Riley, F. P., Gulati, S., Debono, N. E., Raghunandan, A., ... Hirsa, A. H. (2020). Simulated microgravity in the ring-sheared drop. npj Microgravity, 6(1), [2]. https://doi.org/10.1038/s41526-019-0092-1

Simulated microgravity in the ring-sheared drop. / McMackin, Patrick M.; Griffin, Shannon R.; Riley, Frank P.; Gulati, Shreyash; Debono, Nicholas E.; Raghunandan, Aditya; Lopez, Juan M.; Hirsa, Amir H.

In: npj Microgravity, Vol. 6, No. 1, 2, 01.12.2020.

Research output: Contribution to journalArticle

McMackin, PM, Griffin, SR, Riley, FP, Gulati, S, Debono, NE, Raghunandan, A, Lopez, JM & Hirsa, AH 2020, 'Simulated microgravity in the ring-sheared drop', npj Microgravity, vol. 6, no. 1, 2. https://doi.org/10.1038/s41526-019-0092-1
McMackin PM, Griffin SR, Riley FP, Gulati S, Debono NE, Raghunandan A et al. Simulated microgravity in the ring-sheared drop. npj Microgravity. 2020 Dec 1;6(1). 2. https://doi.org/10.1038/s41526-019-0092-1
McMackin, Patrick M. ; Griffin, Shannon R. ; Riley, Frank P. ; Gulati, Shreyash ; Debono, Nicholas E. ; Raghunandan, Aditya ; Lopez, Juan M. ; Hirsa, Amir H. / Simulated microgravity in the ring-sheared drop. In: npj Microgravity. 2020 ; Vol. 6, No. 1.
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