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Janus Scattering
In article number 2100369 by Xuan Chen, Min Li, Zuojia Wang, and colleagues, broadband Janus scattering for time‐reversed channels are realized via twisting electric dipoles. The performance on phase modulation can be significantly improved in tilted systems. Two devices are designed. Designer Janus phase retarders show asymmetric phase modulation over a broad spectrum protected by...
Electromagnetic resonances in meta‐atoms have empowered optical interfaces with unprecedented abilities in wavefront manipulation. Despite the versatile applications, energy efficiency and bandwidth improvement are still theoretically constrained by the dispersion feature of resonances in mesoscopic structures. Here, a nontrivial phase modulation mechanism is exposed that breaks the efficiency and...
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