We demonstrated, for the first time ever, a practical hybrid electromagnetic cloak that works effectively under both TE and TM polarizations. To realize such a cloak, a TE cloak and a TM cloak were firstly designed to work at the same frequency. By combining the two cloaks, a hybrid cloak was realized. Different from the transformation-based cloaks, the proposed cloaks are based on the highly surface-confined property of surface plasmons. The cloaking performance of such cloaks is nonperfect. However, such cloaks can be made very thin and moreover are much easier to be realized in practice. Both simulations and experiments verified our design.
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