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Fig. 2

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Gold nanofilm thickness dependent terahertz waveforms for three substrates of (a) SiO2, (b) SiO-Si, and (c) Si, and (d)-(f) their correspondingly summarized peak signals.
Gold nanofilm thickness dependent terahertz waveforms for three substrates of (a) SiO2, (b) SiO-Si, and (c) Si, and (d)-(f) their correspondingly summarized peak signals.