Burning the droplets is bounced back. Credit: Zulu Et El. , 2025
The droplets that bouncing the surface are a daily tendency, such as cutting the leaves or water drops in a warm pan, cutting and slipping ladenfrost effects. There is also an upside -down leading effect, which was previously described in 1969, which contains a hot item, such as booting a drop above a cold surface. Understanding the mechanism behind these phenomena is very important for a wide range of practical applications, such as self -cleaning, anti -ushing, anti -fogging, surface charging printing, or drop -based logic system.
The droplets usually bounce only when the surface is sprited or engineer to reduce the sticky in some way. Physics at Hong Kong’s City University have estimated how to get this good of hot oil droplets. New paper The journal was published in Newton.
As we are Were previously reportedIn 1756, a German scientist whose name is Johann Gotlob to face the frost Reported Its observed Of the extraordinary trend. Generally, it noted, the water spreads on a very hot pan cesles and becomes very quick. But if the temperature of the pan is beyond the boiling point of the water, the “shining drops similar to the quiclore” will be formed and formed on the whole level. It is “called”Leaden frost effect “ In his honor
In the next 250 years, physicists have given a viable explanation as to why this happens. If the surface is at least 400 ° Fahrenheit (even above the boiling point of water), water vapors, or steam cushions are made under them, which keeps them leuts. The Leaden Fruest Effect also works with other liquids, including oil and alcohol, but the temperature at which it appears will be different.
Bent Continues to be attracted Physics, for example, in 2018, French physicists discovered That the drops are not just riding on the steam cushion. Unless they are too big, they move themselves forward. In 2019, an international team of scientists Finally indicated the source Along with this cracking sound Laden Frost was reported. Science Found It depends on the size of the drop. These are the large drops that have exploded with this telt crack. Even you can get the Ladenfrost effect With snowAs a physicist in Virginia Tech Demonstrated In 2022.