In Saudi Arabia, a team of researchers developed a water purification device. And that device not only keeps water free of contaminants but also produces free electricity. According to a report, over 780 million people across the world do not have access to clean water.
Water purification is the only way to make drinking water available to lot of people around the world. But the process of water purification is a lengthy one and consumes a lot of electricity. That is the reason many citizens of the developing countries do not have clean water to drink.
A team of researchers in Saudi Arabia made an invention. They invented a device that solves the two problems- water purification and electricity. And it uses solar power to produce electricity. The electricity in turn helps with purifying the water.
This process is a hit for the arid regions just like Saudi Arabia, where there is lot of sun and scarcity of drinking water. And the good news behind this invention is it is not just for industrial use. According to the researchers, you can set up this device in your home and generate power and have clean water at the same time. This makes one of the best house hard water filter along with solving the problems of electricity.
Pen Wang, the researcher and the co-author of the Cosmos Magazine said- “The generated clean water an be used for cleaning solar panels to remove dust particles, it can be used to irrigate plants and crops, making desert agriculture possible.”
In a paper published on Nature Communications, they explained the workings of this water purifier. The top of the device has a horizontal commercial silicon solar cell fitted on it. And then directly below the cell there are several tiers to filter the contaminated water.
The process of water passing through the tier produces clean water as well as heat. Earlier researchers just used saline water, but now the device purifies sea water even contaminated with copper, lead, sodium, potassium and calcium.
Shock Waves can Deform a Material Up to its Atomic Level
Scientists from Materials Structure Science, Tokyo Institute of Technology have captured the deformation effect of shock waves on the material when they used x-rays diffraction. The effect shows how shock waves deform material at the atomic level. Creativity and manipulation in the structure of a material to know about their properties was the foundation of the research. The interaction between the materials takes place with the exchange of forces. So now it would be easy to predict any material’s ability to withstand force and how it would impact the central body of the structure.
The deformation force caused by the rays on the material was actually a shock wave that had displaced the atoms of the material. If the external force is not too great, then the internal force occurred due to atoms can block the external force to retain the natural state of the material or structure. In the case the external force is beyond the limit, force may result in permanent damage and deformation on the material or structure, and then structural failure analysis experts would be needed to make a report on the material being deformed.
The x-ray diffraction came to the rescue at the unit cells of the material. The unit cell is the smallest repeating three-dimensional atomic structure that reflects the symmetry of the crystal. By studying the displacement developed due to crystal deformation, the material was observed. When x-rays were directed towards the atom, it gets absorbed and they re-emit again in the form of shock way by the atom present in the crystal.
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