Abstract
In the above article [1] , we have found that Figs. 5 and 6 were the same, while the detailed explanations for the two figures were correct. After carefully checking the final-accepted file uploaded to the submission system and the journal publication file, the abovementioned mix-up may be triggered by the incautious manuscript proof procedure. More specifically, the mix-up contents were only related with Fig. 6 and did not affect other contents (e.g., Conclusion section) in the manuscript. The correct Fig. 6 is provided as follows, which is consistent with other EIT metasensors [2] , [3] .