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Cleaning Windows, Facades, and Solar Panels Has Always Been an Expensive and Laborious Task. Now, Chinese Scientists Have Created Glass That Cleans Itself in Seconds Using Only Electricity.
A new type of self-cleaning glass, created by scientists from Zhejiang University in China, may revolutionize how we keep windows, solar panels, and facades clean.
The innovation uses electric fields to eliminate dust and other particles without the need for water, chemicals, or human effort.
Common Problem, Smart Solution
The constant presence of dust on surfaces is a global problem. It affects everything from residential windows to large buildings and equipment in desert regions. Manual cleaning is not only costly but also consumes time and resources. Therefore, finding effective methods for automatic cleaning has become a priority.
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The most important aspect is that this new technology does not rely on abrasives or fluids. The alternating electric field applied to the glass causes unusual movements in the particles. Some slide, others change direction, or even jump completely off the surface.
Understanding Particle Movement
The researchers observed curious behavior: the electric field causes charged particles to move in unexpected ways. This discovery helped resolve one of the biggest challenges of previous self-cleaning technologies — the lack of control over fine and irregular dust.
Based on this, the scientists designed a thin, transparent glass, measuring only 0.62 mm in thickness. It can remove up to 98% of particles in seconds. This happens without wear, without liquid, and with minimal energy consumption.
Efficient Self-Cleaning in Seconds
Another important advancement is in speed. When the electrical system is activated, the glass cleans itself almost instantaneously. Moreover, it does not matter if the dust is organic or inorganic. Everything is removed uniformly and effectively.
Therefore, the use of this technology can bring savings and efficiency to various sectors. Solar panels, for example, suffer performance loss due to dirt accumulation. With self-cleaning glass, the generated energy can significantly increase.
Prevention Against New Dirt
In addition to cleaning, the glass prevents new particles from settling. This happens because the electric field activates the so-called “particle shielding effect.” In other words, charged particles in the air are deflected before they even touch the glass.
Tests indicated a reduction of almost 90% in the accumulation of suspended dust. In regions with sandstorms or dry weather, this continuous protection can make all the difference.
High Transparency and Simple Production
Even with all this technology, the glass remains transparent. It maintains the passage of visible light almost intact. The slight loss occurs only in the infrared spectrum, which does not interfere with its application in greenhouses, buildings, or vehicles.
Another positive aspect is the manufacturing process. The electrodes are etched directly onto the glass plate and protected by a thin film. Since it uses common materials, the glass can be manufactured on a large scale using existing techniques in the industry.
With so many advantages, the glass can be used in high-rise buildings, windshields, greenhouses, roofs, and equipment operating in desert areas. The system is simple, efficient, and adaptable.
The complete study was published in the journal Advanced Science and represents an important step toward cleaner, more economical, and sustainable surfaces.
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