Components of gold and silver, used in photonic devices, can be replaced nanophotonic components based on copper. Experimentally, this was proven by Russian scientists from the Moscow Institute of physics and technology.
Photonics is a discipline on the work with optical signals and creation on their basis of various devices. Nanophotonics — section of this science that studies the processes arising from the interaction of photons with nanoscale objects. One of the challenges facing this direction, is the creation of computational machines that work much faster due to the use of photons instead of electrons.
Earlier it was believed that the creation of nanophotonic components, allowing the use of light in the transistors of several nanometers size, need gold or silver. However, experts from MIPT was represented by copper chips, their properties are not inferior to gold.
As explained by experts, in practice, to create nanostructures based on gold and silver in some cases could be impossible, since these materials do not enter into chemical reactions, so the copper, if it can be applied in nanophotonics, has a much large scope than the materials, which it may come.
Your research specialists published in the journal nano-letters.