Fig. 4From: Vertically Free-Standing Ordered Pb(Zr0.52Ti0.48)O3 Nanocup Arrays by Template-Assisted Ion Beam EtchingPiezoelectric response of the ordered VFS PZT NC arrays on Pt/Si substrate. a Topologically image. b Height data for three PZT NCs along the black line marked in a. The corresponding c phase image and d amplitude imageBack to article page