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. 2019 Jun 27;19(13):2860. doi: 10.3390/s19132860

Figure 15.

Figure 15

(a) Electric field sensor probe based on electrostrictive ceramics [106], (b) sensing system based on FBG bonded to a piezoelectric ceramic (PZT) cylinder [107], (c) sensing probe configuration of two FBGs and piezoceramics [108], (d) sensing system with high sensitivity using two FBGs glued on piezoceramics with different direction [109].