Abstract
A reflective metahologram working at visible and near-infrared domains has been demonstrated by Junsuk Rho and co-workers (see article number 2100609). To realize a pragmatic and security-enhanced anticounterfeit display technology, such a dual-band metahologram with heterogeneous meta-atoms comprised of gold and silicon is proposed. The device can project two different holographic images under visible and near-infrared light illumination.
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