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Photonic structures with long-range order are inherently iridescent, suggesting by current theory. Contrary to this paradigm and inspired by biological photonic structures from hairs of blue tarantulas, a noniridescent photonic structure with long-range order is shown here. This photonic structure is hierarchical and has high degrees of rotational symmetry in suitable spatial scales.
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Hsiung et al. (2016) studied this question.
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