A hydrophobic-hydrophilic zero-gravity liquid-gas phase separator
Hydrophobic-hydrophilic zero gravity liquid-gas phase separator for Apollo 11 flight life support system
Saunders, C. G.↗
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Results for “Hydrophobicity”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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The structure of hydrophobic gas diffusion electrodes
Teflon-bonded gas diffusion electrode flooded agglomerate model, determining porosity, surface area, IR drop, etc
Giner, J.↗
Pinned in Microgravity: How Colloidal Suspensions Inhibit Droplet Motion
Understanding the fundamental behavior of colloidal fluids in microgravity is critical for advancing material science, manufacturing, and biological processes. In this study we investigate the dynamics of a droplet containing colloidal suspension when ejected in short term microgravity. These conditions are generated using a 2.2 second drop tower. A custom droplet generator was designed to produce consistent size-controlled droplets containing passive colloidal particles. The particles are suspended in water and subsequently ejected out of a hydrophobic wedge under microgravity conditions, where the droplet ejection time can be predicted [Torres & Weislogel, 2021]. The ejection times will be compared with de-ionized water ejected from the same system to investigate the effects of change in density and surface tension caused by the colloids. Successful passive colloidal ejection will lay the foundation for active colloid research in the future.
colloids↗
Indium adhesion provides quantitative measure of surface cleanliness
Indium tipped probe measures hydrophobic and hydrophilic contaminants on rough and smooth surfaces. The force needed to pull the indium tip, which adheres to a clean surface, away from the surface provides a quantitative measure of cleanliness.
Krieger, G. L.↗
Evaluation testing of zero gravity humidity control system
Design criteria for zero gravity hydrophobic/ hydrophilic type humidity control system
Lamparter, R. A.↗
Elimination of gases and contamination from water
Filtration system with membrane type hydrophilic and hydrophobic filters gives absolute filtration with automatic venting of freed gases, and prevents backward transmission of contamination with no bacterial growth through the filters. Filter aids in degassing industrial solutions and in removing oxygen from sea water.
Buck, A. P.↗
Studies of the electron transport chain of extremely halophilic bacteria. IV
Halophilic bacteria electron transport chain, examining hydrophobic forces role in menadione reductase structure
Lanyi, J. K.↗
Materials for Cryogenic Propellant Dewetting
The purpose of this experiment campaign is to find materials or surface coatings that repel ("dewet") cryogenic propellants. This presentation summarizes progress up to this point.
contact angle↗