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Keywords:

  • liquid crystals;
  • cholesterics;
  • chiral nematics;
  • optics;
  • photonics
Thumbnail image of graphical abstract

Large-scale color changes (100s of nm) in polymer-stabilized cholesteric liquid crystals with a negative dielectric anisotropy are presented. Reflection peak tuning is enabled with DC electric fields through a unique peak splitting behavior. This simple approach can be applied in a variety of photonic applications.