1. Papers published on additive manufacturing of piezoceramics (data from Web of Science)

2. Piezoceramic with lattice structure formed by Binder Jetting^[18]

3. Schematic diagram of layered exposure strategy (a) and micro-topography photo of sintered part^[32] (b), photo of precursor body fabricated by Digital Light Processing (c), photos of BTO sample after sintering^[35] (d), photos of PZT ceramic microarrays fabricated by Binder Jetting^[37] (e)

4. Micro-morphology photos of the PZT ceramics sintered at different temperatures (a) and photos of sintered PZT ceramics fabricated by Direct Ink Writing (b)^[41], and cross-section photo of gradient piezoelectric ceramics fabricated by Fused Deposition Modeling (c)^[51,52]

5. Photos of BTO/HA piezoelectric ceramics fabricated by Binder Jetting (a) and SEM images of the sample after 24 h MC3T3-E1 cells incubation (b)^[70], piezoelectric ceramics and piezoelectric composite materials fabricated by Digital Light Processing (c), the underwater acoustic testing device and the output voltage of the hydrophone under different acoustic excitation frequencies (d) ^[32], the photo of CPE sample (e) and the packaged ultrasound scanning equipment (f), and pig eye ultrasound imaging results (g)^[74]

6. Schematic (a) and picture (b) of piezoelectric sensor device^[31]

Table 1. Comparison of properties of piezoceramics formed by additive manufacturing