'Bubbles' liquid objects in the air with sound waves

These bubbles have a lifetime of tens of minutes.

For decades, science has found a way to use sound waves to lift and hold small objects in the air, but this is the first time a drop of liquid - floating - is transformed into a bubble by the phenomenon of addition. enjoy the wave . Bubble shape depending on the source adjustment.

Scientists keep suspended droplets and convert them into bubbles through sound waves.

The team created bubbles from a variety of fluids, including ordinary water. Increasing the sound intensity causes the first drop of liquid to be pressed into a pan shape. After that, sound waves from many sources are calculated to resonate within it, causing the liquid membrane to expand continuously until an empty bubble forms.

This phenomenon can be considered 'reversible' naturally, when surface tension causes a bubble film to always tend to shrink to reduce its own surface area. The study was published on September 11 in the journal Nature Communications.

Photo of the process of 'bubbleing' a drop of water.(Source: Nature.com).

Although often referred to as baby toys, bubbles are a serious problem. They are very important in the production process of food, pharmaceuticals, cosmetics and ultralight materials. Therefore, a new bubble-making technique can find foothold in many industries.

Scientists keep suspended fluids using a lifting technique called 'sound suspension'. Under this method, small objects are kept in the air thanks to the intense sound radiation pressure and can even move back and forth.

The bubbles formed in this way maintained for dozens of minutes, surprisingly long time. Normally, bubbles born of children's toys last only a few seconds before the soap solution flows to the bottom of the bubble, making the film thinner and the pressure breaking. But here, this process slows down because the bubble surface is being impacted by sound waves.