This is similar to a description of tetrapod QD. T
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his team using metal nanostructures called epsilon-near-zero (ENZ) metamaterials, which grow with arbitrary, fractal needles just like a small pine tree. Within the cavities developed by the protruding metal branches, the propagation of light almost comes to a standstill allowing the ENZ substance to squeeze the entire visible light colors to the same nanometer-scale sites.