Photonic crystals are manufactured structures used in many advanced optical devices to control the flow of light. Researchers in Italy and the U.S. discovered that an ancient Roman glass fragment naturally formed a photonic crystal structure on its surface through environmental weathering.
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Controlling the chirality of light is important in many fundamental and applied studies. An international research collaboration designed and fabricated a metasurface that can control chirality by breaking the symmetry of light’s orbital angular momentum.
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Researchers from Rice University and the Research Center “E.Piaggio” of the University of Pisa and the Italian Institute of Technology have collaborated on a prosthetic device that provides sensory feedback to the user in addition to the device’s normal functionality.
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