At Peter the Great St. Petersburg Polytechnic University (SPbPU) and the Academic University of the Russian Academy of Sciences named after Z.I. Alferov in St. Petersburg, innovative flexible ultraviolet radiation sources have been created. The development may find application in the production of microdisplays and medical devices for the treatment of skin diseases.
Ultraviolet radiation is already actively used for water disinfection, air purification, and surface cleaning from bacteria and viruses. However, traditional UV radiation sources have rigid substrates, limiting their application.
The new sources are thin and flexible materials based on polymer membranes. They include nanoheterostructures made of nitride compounds.
The ultraviolet radiation sources are made in the form of an array of miniature nanocrystals that can be immersed in a flexible polymer matrix. Due to their unique geometry, filamentous nanocrystals (which can be imagined as micro-columns) can withstand bending deformation, which makes the entire LED flexible.
The next step in the development of this technology is the creation of elastic radiation sources in both the ultraviolet and visible ranges. Such developments will be in demand for creating foldable screens for mobile devices with high resolution.
Earlier, www1.ru reported that in St. Petersburg developed a technology for creating components for underwater communication.
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