Successfully extracting the most clean water drops in history, science finds an extremely unexpected technology

It is self-cleaning technology. When we understand more, we will create materials that will never be dirty again.

Everything is relative, including cleanliness. In fact, in some respects, all things in this world are not clean, no matter how hard you try.

However, cleanliness is still very important, especially keeping the surface clean. The table may be dirty, but the table surface must be clean. Our bodies can be rich in bacteria, but at least the skin must be clean.

Recently, scientists have confidently stated that they can create the cleanest droplets in history . And more importantly, they also found the secret of the substance that could be used to design the surface "self-cleaning".

The purest, purest water drop in history.

Specifically, the research team from the University of Vienna (Austria) has studied the substance capable of self-cleaning , named titanium dioxide. This is a compound with many applications, such as mirrors without dew, bleaching paper, sunscreen and food protection products.

According to the study, titanium dioxide has the ability to form an acid layer on its surface. As a result, it can clean itself without human impact.

However, the mechanism of how acid is produced remains a question mark. To understand, we need water, because titanium dioxide will absorb water and push water according to the amount of light. And that's why they have to create the cleanest, purest water drop. Simply because to understand the cleanliness, you can't put something with impurities on it.

Mixing titanium dioxide into the material can create self-cleaning surfaces.

Scientists must clean titanium dioxide at the atomic level. To do so, they need to create a drop of water more than distilled water . The water has never been exposed to air, so it must be done in a vacuum.

First, the water will be frozen in a small container, at a temperature of -140 ° C. The container is then heated, leading super clean steam to droplets to titanium dioxide.

But what is the result? Super clean water does not produce acid on the surface of titanium dioxide. Experiment on some other countries also. Only distilled water after exposure to air can produce acid.

Digging deeper, it turns out that the molecules are acetic acid (usually in vinegar) and formic acid (made by plants). These molecules often float in the air, and water only requires a very small fraction of these molecules to be sufficient to bind to titanium oxide.

"This is an important finding, helping us create materials that are self-cleaning," said Ulrike Diebold, research author from the University of Vienna.

"At the same time, it shows that we also need to be careful with such experiments. For ultra-pure water, just a small impact of the air is enough to deviate greatly."