Figure 4
Experimental verification of the “charge disc” mode.
(a), JM-FM curves for the arrays of ZnO-nanotapers with the same h of 2 μm and different θ of 10°, 15°, 25° and 35° respectively. (b), 3D-surface for the relationship among θ, h and γC-array of the ZnO-nanotaper arrays, where the three regions of I, II and III are marked respectively. For clarity, the inset is the back view. (c), The 3D-surface for the difference between the theoretical γC-array values before and after the correction of d. The inset is the back view. (d), Comparison between the theoretical curves calculated from the “disc model” and the experimental data of γC-array for the arrays of the ZnO-nanotapers with different θ (upper) and h (lower), respectively. Error bars show the deviation of experimental accuracy.
