noun[mass noun] Physics
A change of wavelength exhibited by some of the radiation scattered in a medium. The effect is specific to the molecules which cause it, and so can be used in spectroscopic analysis. Compare with Rayleigh scattering.
- The Raman effect arises from the inelastic scattering of radiation in the visible region by molecules.
- The Raman effect is extremely pronounced in silicon, though it isn't in fiber materials, Paniccia said.
- Consisting of a silica core covered by a metallic shell, the nanoshells capture and focus the passing light, enhancing the Raman effect.
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