Sliding Metasurface Achieves Frequency Filtering and Beam Deflection Simultaneously
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Light: Science & Applications has published a commentary on the sliding metasurface proposed by H. Shi, W. Zhu, G. Hu and colleagues. Instead of controlling each unit cell with active elements such as PIN diodes, varactors or phase-change materials, the approach laterally translates two complementary metasurface layers relative to each other to generate an effective phase gradient, enabling passive beam deflection while retaining the metasurface's inherent frequency-selective filtering. The commentary authors say this geometry-driven method is simpler and more scalable, and could be extended to terahertz and optical bands.
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- Light: Science & ApplicationsPicksSliding Metasurface Achieves Frequency Filtering and Beam Steering in a Single Device
A review article in Light: Science & Applications presents the sliding metasurface developed by H. Shi, W. Zhu, G. Hu and colleagues. Relative lateral displacement between two complementary metasurface layers generates an effective phase gradient, enabling passive beam steering while retaining frequency-selective filtering. The authors argue that this geometry-driven passive approach is simpler and more scalable than tunable metasurfaces dependent on active components, and could be extended to the terahertz and optical bands.
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