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The comparison of (a) the transmittance, (b) the absorbance between asymmetric MDM-ENA(δ = 70 nm) with amorphous Ge2Sb2Te5 and symmetric MDM-ENA(δ = 0 nm) with amorphous Ge2Sb2Te5. (c) Zoom in picture of Fig. 3(a). (d) Zoom in picture of Fig. 3(b).
