KAIST researchers use volatile additive to suppress gravity-driven drainage, yielding thinner, uniform films.
Researchers at Korea Advanced Institute of Science and Technology (KAIST) have developed a technique to suppress gravity-driven drainage in an inverted liquid by adding a small amount of a volatile liquid. The approach leverages surface-tension-driven Marangoni flows to counter downward drainage, reframing the classic Rayleigh–Taylor instability in interfacial fluid