Overview

• Researchers simulated microgravity by generating small, frequent surface waves in a tank at the National Center for Physical Acoustics.
• A partial barrier created a meniscus whose shape governed how much wave energy crossed to the other side, measured with acoustic tools.
• Adjusting barrier height and applying hydrophilic or hydrophobic coatings let the team tune the meniscus and, in turn, transmission.
• The authors describe this as the first fluid experiment to demonstrate meniscus-driven modulation of surface-wave transmission.
• Potential uses include lighter, more efficient spacecraft fuel, water-recycling, life-support, and cooling systems, with possible crossover to microfluidic devices on Earth.