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. Author manuscript; available in PMC: 2019 May 9.
Published in final edited form as: Adv Funct Mater. 2018;28:10.1002/adfm.201706448. doi: 10.1002/adfm.201706448

Figure 4.

Figure 4

a) S–E curves along the [110] (olive) and [−110] (red) directions, respectively. The single standard deviation uncertainty, based on repeated measurements, of the strain measurements is 0.003% (smaller than the plotted point size). b) The net strain obtained by subtracting the strain along the [−110] direction from that along the [110] direction. c) The antisymmetric loop-like strain (olive) and symmetric butterfly-like strain (red) decomposed from (b). d) The absolute value of strain deduced from (c).