Photonic Properties of Strongly Correlated Colloidal Liquids

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The authors study the optical properties of colloidal suspensions of highly charged particles. By manipulating the strength of electrostatic interactions between the particles, they show how light propagation through the suspensions can be controlled.

The interaction of light with a material is strongly dependent on the material structure at the scale of the relevant wavelength. The interplay between structural order and disorder is key for light transport, with ordered structures generally giving rise to Bragg-type interference and disordered structures being <are the authors actually tuning disorder?>

The System