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The labels can be used to mark various electronics, medicine, and jewelry. Their authenticity can only be checked with special equipment, thus providing additional protection against fake merchandise.
In the future, the use of quasicrystals may open up new possibilities for laser and sensor design.
Researchers from Far Eastern Federal University and ITMO University optimized earlier produced gold nanoparticles in such a way that they control the wavelength of light in an optimal manner. The research can be used for creating cheap and high-precision gas analysers.
The concept is based on the interaction of resonant semiconductor iron oxide Fe2O3 nanoparticles with light. They can get heated locally by a laser and convert the absorbed light into heat.