AI Article Synopsis
- * This scattering behavior explains natural phenomena like the blue color of the sky and the varying strength of mobile phone signals.
- * New materials called Weyl systems can manipulate these scattering laws, allowing for customized wave interactions at any wavelength, enhancing applications in radiofrequency and optics.
Article Abstract
Wavelength determines the length scale of the cross section when electromagnetic waves are scattered by an electrically small object. The cross section diverges for resonant scattering, and diminishes for non-resonant scattering, when wavelength approaches infinity. This scattering law explains the colour of the sky as well as the strength of a mobile phone signal. We show that such wavelength scaling comes from the conical dispersion of free space at zero frequency. Emerging Weyl systems, offering similar dispersion at non-zero frequencies, lead to new laws of electromagnetic scattering that allow cross sections to be decoupled from the wavelength limit. Diverging and diminishing cross sections can be realized at any target wavelength in a Weyl system, providing the ability to tailor the strength of wave-matter interactions for radiofrequency and optical applications.
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Source |
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5680227 | PMC |
| http://dx.doi.org/10.1038/s41467-017-01533-0 | DOI Listing |
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