Simulated microgravity in the ring-sheared drop
| Autor: | Frank Riley, Shannon Griffin, Shreyash Gulati, Aditya Raghunandan, Amir Hirsa, Nicholas E. Debono, Juan Lopez, Patrick McMackin |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Physics and Astronomy (miscellaneous) Capillary action Materials Science (miscellaneous) lcsh:Biotechnology Biophysics Medicine (miscellaneous) 02 engineering and technology 01 natural sciences Biochemistry Genetics and Molecular Biology (miscellaneous) lcsh:Physiology Article 010305 fluids & plasmas Physics::Fluid Dynamics Viscosity Fluid dynamics lcsh:TP248.13-248.65 0103 physical sciences Shearing (physics) lcsh:QP1-981 Drop (liquid) Mechanics 021001 nanoscience & nanotechnology Amyloid fibril Agricultural and Biological Sciences (miscellaneous) Condensed Matter::Soft Condensed Matter Simulated microgravity Space and Planetary Science Fictitious force 0210 nano-technology |
| Zdroj: | NPJ Microgravity npj Microgravity, Vol 6, Iss 1, Pp 1-7 (2020) |
| ISSN: | 2373-8065 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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