Fig.2 (IMAGE)

Science China Press

Fig.2

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(left) Photo of a two-port topological insulator (TI) waveguide-resonator, yellow dotted lines indicate the boundaries of TI. (right) Experimental measured energy field distribution in critical coupling, incident waves in the resonator have not even one channel through which to flow out, now the resonator serves as a perfect energy absorber.

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@Science China Press

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