Fabrication and characterization of Barium Titanate nanofibers

In this paper, a rotational disk based electrospinning method for making Barium Titanate (BTO) nanofibers was presented. A silicon wafer coated with a 50 nm MgO barrier layer was attached to a motor mounted disk. BTO nanofibers were collected on the spinning silicon wafer. By using this method, partially aligned BTO nanofibers were obtained. The diameter of the BTO nanofibers was roughly 150 nm. Moreover, a wafer-level nanofiber film with uniform thickness was formed from the nanofibers. After fabrication, the piezoelectric coefficient d₃₃ of the BTO nanofiber was measured using piezoresponsive force microscopy (PFM). The effective piezoelectric coefficient d₃₃ of BTO nanofibers was found to be between 40 and 80 pC/N which is comparable with its bulk counterpart.