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Original Content

How water loves Nanotubes?

A new invention!

How water loves Nanotubes?

I do love water, I love to surf, swim and even to drink water. Do you know why?

Because ⅔ of my body is water. According to research, water is weird. Although it is fundamental to our lives and fortunately 70% of the planet is covered with water, but unfortunately, just 1% is clean that we might be able to drink and that is too little!

Today 1 in every 6 people have a lack of fresh water. Drastically, in 2050, there will be one in every 2 people with a lack of fresh water, either you or me. However, the world needs fresh water. But how?

Importance

Water is very important and is far away from the concept of simple. There are many things in the water that we need to understand.

Let’s compare water with silicon which is abundant on the planet. 28% of the Earth’s crust is composed of silicon as it has a number of unique properties. Today, we know how to utilize its properties which allows us to have cell phones, computers, flat screens and all these instruments that govern our lives today.

Anomalies of water

Do you know silicon has just a half dozen anomalies? Whereas, water has 70.

So it is our duty to find ways to use these anomalous behaviours of water to have clean and freshwater.

Below are the most important 2 of the 70 anomalies of water.

1. Density 

Most liquids contract undercooling, and water does the contrary. If you cool water, it expands and that is why ice floats on water. Ice occupies more volume, is less dense and floats on the liquid surface.

But the more interesting fact is, the water with 0°C temperature floats above 4°C temperature water. See the beauty, when you have winter in the northern hemisphere, you have ice followed by 0 temperature water and far, at the bottom of a river or lake, you have the warm 4 centigrade water with fish and plants surviving!

If water was as common as other materials, then in the very first winter, it would freeze from the bottom to the top and all life would be killed. Isn’t it that cool?

2. Diffusion

It is related to mobility. When water is more dense and compact, the molecules move faster. For example, when there are more cars on the road, the cars move slower. Unlikely, when you have more water molecules, they move faster.

Isn’t that bizarre?

Chemistry of water

Water is composed of 1 oxygen and 2 hydrogen molecules and they are joined together by strong covalent interaction. Between molecules, you have a second interaction called “the hydrogen-bond interaction.”

Difference between covalent and hydrogen-bond interaction

Covalent bonding is very close and strong despite hydrogen bonds are far apart and are 20 times weaker.

When we decrease the temperature, ice forms and all particles are together. The question here is, how does this increased mobility? Actually water molecules move around when they have more particles surrounding them, making and disrupting bonds.

Water might make bonds with something that is poisonous for and makes water undrinkable, like salt. Likewise, the bonds are not always a good thing as the industry also uses the property of water making bonds to throw away the waste or to produce things.

Thereupon, more industry; less clean water and more people; more need for freshwater.

The new scientific method: nanotubes

A few years ago, it was found that the very same mechanism that makes water to move and diffuse faster also makes water to flow faster when confined in nanotubes.

What does it mean by faster?

In nanotubes, water flows 900 times faster than in the laws of physics that govern the sinks of our houses. Water loves to be in the nanotubes. Thus, it enters and just ballistically flows.

In spite of this, salt hates nanotubes as to get inside the tubes, it has to undress the hydration shell of water. Now if you combine the love of water and the hate of salt with nanotubes, you have to put thousands of nanotubes together as a perfect filter for desalinating water (saltwater in abundance on our planet). This is a clear possibility for the future when nanotubes become an industrial commodity.

Mechanism of nanotubes similar to African Beetle

There is a beetle in the desert of Africa. This animal is capable of capturing the vapour air, transform it into the water and drink it.

How does this beetle perform this action?

On the back of a beetle, there is an upper surface, in which they have molecules that love water. They love water so badly that they actually transform vapours into a liquid that requires a lot of energy. Conversely, there is a second layer that hates water. So when water particles come to the second layer they just slide which avoids it to get wet. Whereas the smart beetle just leans to the front and the water comes directly to its mouth!

Nature is perfect!

Nowadays, industries are developing a combination of these two mechanisms. They have water in nanotubes flowing faster. The top of the nanotube loves water and the bottom of it hates water and that will be used to transform water into liquid and then into storage.

So, stay tuned, because, in the future, the water in the nanotubes will solve the problem of the lack of fresh water on the planet!

Image source: llnl.gov

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