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Jülich scientists have for the first time transferred the innovative concept of reinforced lenses. […]
Researchers at Forschungszentrum Jülich have developed a new coating process that specifically improves the mechanical and optical properties of transparent ceramics. This has doubled the breaking strength of the ceramic. The results of his study were published in the scientific journal "Scientific Reports".
Apply a special layer
Transparent ceramics have unique properties and applications, but their manufacture is difficult. It requires high temperatures and well-defined conditions, otherwise defects in the material may occur. "This not only makes the production of these materials more expensive than glbad and glbad ceramics," says Olivier Guillon, researcher at Jülich. "Because of defects, resistance values are often well below theoretically possible limits."
Material defects near their surface are particularly critical. "Even the smallest irregularities on the surface can lead to cracks that expand under certain loads, such as bending, so the component breaks," says Guillon. The new approach to functional coatings is now to solve this problem.
"Our aim was to transfer for the first time the concept of transparent glbad reinforced with ceramics, similar to gorilla glbad, which is widely used in mobile phones, the surface of transparent ceramics must be stabilized by applying a thin layer of Another method, called "income", is expected to significantly improve the mechanical and optical properties, "said Guillon.
Wide spectrum of application
Because of their particular stability, transparent ceramics can be used in many fields where conventional glbad reaches its limits, for example in the industry as scratch and heat resistant viewing windows in glbad ovens. high temperature. Moreover, as they are permeable to short and long wave radiation, they are well suited to ultraviolet lithography lenses or sensors for infrared imaging. They are also great for cameras and smartphones – as a material for optical lenses. Because of their high refractive index, they focus the light more strongly.
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