Reconfigurable metasurfaces

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Science  20 Apr 2018:
Vol. 360, Issue 6386, pp. 281-282
DOI: 10.1126/science.360.6386.281-f

The design flexibility in patterning metasurfaces allows many bulk optical components to be replaced with elements just a fraction of their thickness. For integrated optical devices or miniaturized lightweight components, metasurfaces offer a clear advantage over glass-based optics. By combining metasurface designs with arrays of electromechanically actuated microcantilevers, Zhao et al. demonstrate the ability to actively control the optical properties of a metasurface. Operating in the terahertz regime, they show that they can manipulate the polarization of transmitted light in real time to form a waveplate. Such active control of metasurface properties will be useful for developing imaging and sensing terahertz technologies.

Optica 5, 303 (2018).

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