Indestructible composite glass for smartphones and TVs. Free Technical Library News

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Indestructible composite glass for smartphones and TVs

14.11.2021

A team of scientists has developed a new technology for the production of ultra-strong composite glass for smartphones and other devices.

Employees of the University of Queensland (Australia), the University of Leeds (UK), the University of Paris-Saclay (France) and the University of Cambridge (UK). According to the authors, they were able to process the glass nanocrystals in such a way that now it does not break and provides a clear image.

The emitting materials are made from lead halide crystals called perovskites. They absorb sunlight and convert it into electricity, helping to save energy. Of them, for example, make cheap solar panels of a new generation. The main disadvantage of perovskites is their sensitivity to light, heat, water and even air - ordinary water vapor destroys perovskites in a matter of seconds. A team of researchers has found a way to bind porous glass nanocrystals and protect them from the environment.

This process is key to stabilizing materials, improving their performance, and preventing toxic lead ions from being leached from materials.

The technology can be implemented in many areas, including creating screens from perovskite crystals that surpass QLED (Quantum Dot Light-Emitting Diode Displays) in image quality and performance. These are installed on the best modern TVs.

"We can not only make these nanocrystals stronger, but also tune their optoelectronic properties in such a way that the efficiency of light emission is simply fantastic," the scientists noted.

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Random news from the Archive

New technology for optical imaging of nanoparticles 24.11.2020

Scientists from the University of Houston and the Cancer Center at the University of Texas (USA) have developed a new PANORAMA optical imaging technology that can detect nanoparticles as small as 25 nanometers.

Experts note that the size of the smallest transparent object that a standard microscope can display today is from 100 to 200 nanometers. In addition to being so small, these objects do not reflect, absorb, or "scatter" enough light to allow imaging systems to detect their presence.

Labeling is another widely used method; this requires researchers to know something about the particle they are studying—for example, that a virus has a spiked shell (like the "solar corona" of coronaviruses)—and develop a way to tag that feature with a fluorescent dye or some other method to make it easier to was to detect a particle. "Otherwise, it will appear invisible under a microscope, like a tiny dust particle, because it is too small to detect," the authors note.

The PANORAMA tool works very differently: it does not rely on scattered light from nanoparticles or on markers. Instead, the system allows observers to detect a transparent target as small as 25 nanometers by monitoring the transmission of light through a glass slide coated with gold nanodiscs. By observing changes in illumination, they can detect nearby nanoparticles. At the same time, it is possible that PANORAMA can see the particles even smaller.

"We settled on 25 nanometer nanoparticles simply because they are the smallest polystyrene nanoparticles on the market," said Wei-Chuan Shi, a professor of electrical and computer engineering at the University of Houston.

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