Nanowerk June 15, 2021
Previously researchers succeeded in demonstrating the phenomenon of perfect absorption in large bodies of matter that were several times the size of a light beam. But the question remained unsolved was – whether the same was possible for miniature objects. An international team of researchers (Russia, Sweden) calculated the properties of a small object that could completely absorb all incidental light. They succeeded in reducing this complex analytical task to a simpler one – a Fredholm integral equation of the second kind. Having solved it, they found the ideal combination of particle and light properties that would ensure perfect absorption at the nanoscale. This combination works well at the nanoscale as well as in objects the size of a battery for a phone or a laptop. Reducing the size of the absorbers will make the devices themselves much smaller. The results of this research will be useful in the creation of compact microwave and optical antennas, and efficient wireless energy transfer devices…read more. TECHNICAL ARTICLE