Fig. 4 | Nature Communications

Fig. 4

From: A highly attenuating and frequency tailorable annular hole phononic crystal for surface acoustic waves

Fig. 4

Experimental SAW transmission through PnC. a Transmission spectra of SAWs excited and detected through inter-digital transducers (IDTs) for a device with an unpatterned, blank substrate and with a 3 mm × 80 µm square array of finite depth annular holes as a PnC. b SAW attenuation of propagating SAWs at each resonant IDT peak relative between a blank substrate and the fabricated PnC, calculated as \(20\;\log ({A_{{\rm{patterned}}}}/{A_{{\rm{blank}}}})\), with s.d. error bars. Solid on white, empty on blue and half-filled on pink markers represent frequencies of expected propagating SAW bands, bandgap and leaky SAWs respectively

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