Application of brillouin scattering in studying the physical properties of metal organic frameworks, nanotubes, ionic liquids and spin ice

Abstract

When light interacts with a material, it can be transmitted, absorbed or scattered. The scattered light contains both elastic and inelastic components. The scattering of light without any change in frequency (elastic scattering) is known as Rayleigh scattering. The blue colour of the sky is attributed to the Rayleigh scattering and can be explained by the well-known ?-4 law put forward by Lord Rayleigh for the light scattering by objects smaller than the wavelength of incident light [1]. The elastic scattering from the scattering centres consisting of the spherical particles of any diameter is called Mie scattering [2]. The scattering intensity in this case generally does not have a strong dependence on the wavelength, but is sensitive to the particle size. Mie scattering coincides with Rayleigh scattering when the diameter of the particles is much smaller than the wavelength of the light.