Opal photonic glass, SEM

Bildnummer 12666502
Opal photonic glass, SEM
Opal photonic glass. Coloured scanning electron micrograph (SEM) of photonic polystyrene (plastic) spheres. Photonic crystals are attractive optical materials for controlling and manipulating light flow. These regularly arranged hollow spheres measure 172nm in diameter and have the optical properties of an opal. They contain regularly repeating regions of high and low dielectric constant. Photons (behaving as waves) either propagate through this structure or not, depending on their wavelength. One dimensional photonic crystals are used, in the form of thin-film optics, in applications from low and high reflection coatings on lenses and mirrors to colour changing paints and inks. In nature photonic crystals are found, among others, in opals, bird feathers and butterfly wings. Magnification: x100, 000, when printed 15 centimetres wide.
Lizenzart: Lizenzpflichtig
Credit: Science Photo Library / EYE OF SCIENCE
Bildgröße: 4356 px × 4012 px
Modell-Rechte: nicht erforderlich
Eigentums-Rechte: nicht erforderlich
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  • All moral rights asserted. Recolouring or alteration of the image is prohibited without permission.
  • not available outside AT,CH,DE

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